show interfaces

Physical interface

Name of the physical interface.

Enabled

State of the interface. Possible values are described in the “Enabled Field” section under Common Output Fields Description.

Interface index

Index number of the physical interface, which reflects its initialization sequence.

SNMP ifIndex

SNMP index number for the physical interface.

Generation

Unique number for use by Juniper Networks technical support only.

Link-level type

Encapsulation being used on the physical interface.

MTU

Maximum transmission unit size on the physical interface.

Speed

Speed at which the interface is running.

Loopback

Loopback status: Enabled or Disabled. If loopback is enabled, type of loopback: Local or Remote.

Source filtering

Source filtering status: Enabled or Disabled.

LAN-PHY mode

10-Gigabit Ethernet interface operating in Local Area Network Physical Layer Device (LAN PHY) mode. LAN PHY allows 10-Gigabit Ethernet wide area links to use existing Ethernet applications.

WAN-PHY mode

10-Gigabit Ethernet interface operating in Wide Area Network Physical Layer Device (WAN PHY) mode. WAN PHY allows 10-Gigabit Ethernet wide area links to use fiber-optic cables and other devices intended for SONET/SDH.

Unidirectional

Unidirectional link mode status for 10-Gigabit Ethernet interface: Enabled or Disabled for parent interface; Rx-only or Tx-only for child interfaces.

Flow control

Flow control status: Enabled or Disabled.

Auto-negotiation

(Gigabit Ethernet interfaces) Autonegotiation status: Enabled or Disabled.

Remote-fault

(Gigabit Ethernet interfaces) Remote fault status:

• Online—Autonegotiation is manually configured as online.

• Offline—Autonegotiation is manually configured as offline.

Device flags

Information about the physical device. Possible values are described in the “Device Flags” section under Common Output Fields Description.

Interface flags

Information about the interface. Possible values are described in the “Interface Flags” section under Common Output Fields Description.

Link flags

Information about the link. Possible values are described in the “Links Flags” section under Common Output Fields Description.

Wavelength

(10-Gigabit Ethernet dense wavelength-division multiplexing [DWDM] interfaces) Displays the configured wavelength, in nanometers (nm).

Frequency

(10-Gigabit Ethernet DWDM interfaces only) Displays the frequency associated with the configured wavelength, in terahertz (THz).

CoS queues

Number of CoS queues configured.

Schedulers

(Gigabit Ethernet intelligent queuing 2 [IQ2] interfaces only) Number of CoS schedulers configured.

Hold-times

Current interface hold-time up and hold-time down, in milliseconds (ms).

Current address

Configured MAC address.

Hardware address

Hardware MAC address.

Last flapped

Date, time, and how long ago the interface went from down to up. The format is Last flapped: year-month-day hour:minute:second:timezone (hour:minute:second ago). For example, Last flapped: 2002-04-26 10:52:40 PDT (04:33:20 ago).

Input Rate

Input rate in bits per second (bps) and packets per second (pps). The value in this field also includes the Layer 2 overhead bytes for ingress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

Output Rate

Output rate in bps and pps. The value in this field also includes the Layer 2 overhead bytes for egress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

Statistics last cleared

Time when the statistics for the interface were last set to zero.

Egress account overhead

Layer 2 overhead in bytes that is accounted in the interface statistics for egress traffic.

Ingress account overhead

Layer 2 overhead in bytes that is accounted in the interface statistics for ingress traffic.

Traffic statistics

Number and rate of bytes and packets received and transmitted on the physical interface.

• Input bytes—Number of bytes received on the interface. The value in this field also includes the Layer 2 overhead bytes for ingress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

• Output bytes—Number of bytes transmitted on the interface. The value in this field also includes the Layer 2 overhead bytes for egress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

• Input packets—Number of packets received on the interface.

• Output packets—Number of packets transmitted on the interface.

Gigabit Ethernet and 10-Gigabit Ethernet IQ PICs count the overhead and CRC bytes.

For Gigabit Ethernet IQ PICs, the input byte counts vary by interface type. For more information, see Table 31 under the show interfaces command.

Input errors

Input errors on the interface. The following paragraphs explain the counters whose meaning might not be obvious:

• Errors—Sum of the incoming frame terminated and FCS errors.

• Drops—Number of packets dropped by the input queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet that is dropped by the ASIC's RED mechanism.

• Framing errors—Number of packets received with an invalid frame checksum (FCS).

• Runts—Number of frames received that are smaller than the runt threshold.

• Policed discards—Number of frames that the incoming packet match code discarded because they were not recognized or not of interest. Usually, this field reports protocols that Junos OS does not handle.

• L3 incompletes—Number of incoming packets discarded because they failed Layer 3 (usually IPv4) sanity checks of the header. For example, a frame with less than 20 bytes of available IP header is discarded. L3 incomplete errors can be ignored by configuring the ignore-l3-incompletes statement.

• L2 channel errors—Number of times the software did not find a valid logical interface for an incoming frame.

• L2 mismatch timeouts—Number of malformed or short packets that caused the incoming packet handler to discard the frame as unreadable.

• FIFO errors—Number of FIFO errors in the receive direction that are reported by the ASIC on the PIC. If this value is ever nonzero, the PIC is probably malfunctioning.

• Resource errors—Sum of transmit drops.

Output errors

Output errors on the interface. The following paragraphs explain the counters whose meaning might not be obvious:

• Carrier transitions—Number of times the interface has gone from down to up. This number does not normally increment quickly, increasing only when the cable is unplugged, the far-end system is powered down and then up, or another problem occurs. If the number of carrier transitions increments quickly (perhaps once every 10 seconds), the cable, the far-end system, or the PIC or PIM is malfunctioning.

• Errors—Sum of the outgoing frame terminated and FCS errors.

• Drops—Number of packets dropped by the output queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet that is dropped by the ASIC's RED mechanism.

  Note:

  Due to accounting space limitations on certain Type 3 FPCs (which are supported in M320 and T640 routers), the Drops field does not always use the correct value for queue 6 or queue 7 for interfaces on 10-port 1-Gigabit Ethernet PICs.

• Collisions—Number of Ethernet collisions. The Gigabit Ethernet PIC supports only full-duplex operation, so for Gigabit Ethernet PICs, this number must always be 0. If it is nonzero, there is a software bug.

• Aged packets—Number of packets that remained in shared packet SDRAM so long that the system automatically purged them. The value in this field must never increment. If it does, it is most likely a software bug or possibly malfunctioning hardware.

• FIFO errors—Number of FIFO errors in the send direction as reported by the ASIC on the PIC. If this value is ever nonzero, the PIC is probably malfunctioning.

• HS link CRC errors—Number of errors on the high-speed links between the ASICs responsible for handling the router interfaces.

• MTU errors—Number of packets whose size exceeded the MTU of the interface.

• Resource errors—Sum of transmit drops.

Egress queues

Total number of egress queues supported on the specified interface.

Queue counters (Egress)

CoS queue number and its associated user-configured forwarding class name.

• Queued packets—Number of queued packets.

• Transmitted packets—Number of transmitted packets.

• Dropped packets—Number of packets dropped by the ASIC's RED mechanism.

  Note:

  Due to accounting space limitations on certain Type 3 FPCs (which are supported in M320 and T640 routers), the Dropped packets field does not always display the correct value for queue 6 or queue 7 for interfaces on 10-port 1-Gigabit Ethernet PICs.

Ingress queues

Total number of ingress queues supported on the specified interface. Displayed on IQ2 interfaces.

Queue counters (Ingress)

CoS queue number and its associated user-configured forwarding class name. Displayed on IQ2 interfaces.

• Queued packets—Number of queued packets.

• Transmitted packets—Number of transmitted packets.

• Dropped packets—Number of packets dropped by the ASIC's RED mechanism.

Active alarms and Active defects

Ethernet-specific defects that can prevent the interface from passing packets. When a defect persists for a certain amount of time, it is promoted to an alarm. Based on the router configuration, an alarm can ring the red or yellow alarm bell on the router, or turn on the red or yellow alarm LED on the craft interface. These fields can contain the value None or Link.

• None—There are no active defects or alarms.

• Link—Interface has lost its link state, which usually means that the cable is unplugged, the far-end system has been turned off, or the PIC is malfunctioning.

Interface transmit statistics

(On MX Series devices) Status of the interface-transmit-statistics configuration: Enabled or Disabled.

• Enabled—When the interface-transmit-statistics statement is included in the configuration. If this is configured, the interface statistics show the actual transmitted load on the interface.

• Disabled—When the interface-transmit-statistics statement is not included in the configuration. If this is not configured, the interface statistics show the offered load on the interface.

OTN FEC statistics

The forward error correction (FEC) counters provide the following statistics:

• Corrected Errors—Count of corrected errors in the last second.

• Corrected Error Ratio—Corrected error ratio in the last 25 seconds. For example, 1e-7 is 1 error per 10 million bits.

PCS statistics

(10-Gigabit Ethernet interfaces) Displays Physical Coding Sublayer (PCS) fault conditions from the WAN PHY or the LAN PHY device.

• Bit errors—Number of seconds during which at least one bit error rate (BER) occurred while the PCS receiver is operating in normal mode.

• Errored blocks—Number of seconds when at least one errored block occurred while the PCS receiver is operating in normal mode.

PRBS Statistics

Displays the Pseudo Random Binary Sequence (PRBS) statistics.

The PRBS Statistics are displayed in extensive, detailed, media and normal output except terse.

The output is displayed per serdes lane. The output consists of the total number of iterations in error, the total number of iterations and the number of monitored seconds. An error iteration is one in which at least one bit error is seen.

PRBS Pattern

Specifies the pattern type, that is in the range from 7 to 58.

Link Degrade

Shows the link degrade status of the physical link and the estimated bit error rates (BERs). This field is available only for the PICs supporting the physical link monitoring feature.

• Link Monitoring—Indicates if physical link degrade monitoring is enabled on the interface.

  • Enable—Indicates that link degrade monitoring has been enabled (using the link-degrade-monitor statement) on the interface.

  • Disable—Indicates that link degrade monitoring has not been enabled on the interface. If link degrade monitoring has not been enabled, the output does not show any related information, such as BER values and thresholds.

• Link Degrade Set Threshold—The BER threshold value at which the link is considered degraded and a corrective action is triggered.

• Link Degrade Clear Threshold—The BER threshold value at which the degraded link is considered recovered and the corrective action applied to the interface is reverted.

• Estimated BER—The estimated bit error rate.

• Link-degrade event—Shows link degrade event information.

  • Seconds—Time (in seconds) elapsed after a link degrade event occurred.

  • Count—The number of link degrade events recorded.

  • State—Shows the link degrade status (example: Defect Active).

MAC statistics

Receive and Transmit statistics reported by the PIC's MAC subsystem, including the following:

• Total octets and total packets—Total number of octets and packets. For Gigabit Ethernet IQ PICs, the received octets count varies by interface type. For more information, see Table 31 under the show interfaces command.

• Unicast packets, Broadcast packets, and Multicast packets—Number of unicast, broadcast, and multicast packets.

• CRC/Align errors—Total number of packets received that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets, inclusive, and had either a bad FCS with an integral number of octets (FCS Error) or a bad FCS with a nonintegral number of octets (Alignment Error).

• FIFO error—Number of FIFO errors that are reported by the ASIC on the PIC. If this value is ever nonzero, the PIC or a cable is probably malfunctioning.

• MAC control frames—Number of MAC control frames.

• MAC pause frames—Number of MAC control frames with pause operational code.

• Oversized frames—There are two possible conditions regarding the number of oversized frames:

  • Packet length exceeds interface MTU, or

  • Packet length exceeds MRU

• Jabber frames—Number of frames that were longer than 1518 octets (excluding framing bits, but including FCS octets), and had either an FCS error or an alignment error. This definition of jabber is different from the definition in IEEE-802.3 section 8.2.1.5 (10BASE5) and section 10.3.1.4 (10BASE2). These documents define jabber as the condition in which any packet exceeds 20 ms. The allowed range to detect jabber is from 20 ms to 150 ms.

• Fragment frames—Total number of packets that were less than 64 octets in length (excluding framing bits, but including FCS octets) and had either an FCS error or an alignment error. Fragment frames normally increment because both runts (which are normal occurrences caused by collisions) and noise hits are counted.

• VLAN tagged frames—Number of frames that are VLAN tagged. The system uses the TPID of 0x8100 in the frame to determine whether a frame is tagged or not.

  Note:

  The 20-port Gigabit Ethernet MIC (MIC-3D-20GE-SFP) does not have hardware counters for VLAN frames. Therefore, the VLAN tagged frames field displays 0 when the show interfaces command is executed on a 20-port Gigabit Ethernet MIC. In other words, the number of VLAN tagged frames cannot be determined for the 20-port Gigabit Ethernet MIC.

• Code violations—Number of times an event caused the PHY to indicate “Data reception error” or “invalid data symbol error.”

OTN Received Overhead Bytes

APS/PCC0: 0x02, APS/PCC1: 0x11, APS/PCC2: 0x47, APS/PCC3: 0x58 Payload Type: 0x08

OTN Transmitted Overhead Bytes

APS/PCC0: 0x00, APS/PCC1: 0x00, APS/PCC2: 0x00, APS/PCC3: 0x00 Payload Type: 0x08

Filter statistics

Receive and Transmit statistics reported by the PIC's MAC address filter subsystem. The filtering is done by the content-addressable memory (CAM) on the PIC. The filter examines a packet's source and destination MAC addresses to determine whether the packet may enter the system or be rejected.

• Input packet count—Number of packets received from the MAC hardware that the filter processed.

• Input packet rejects—Number of packets that the filter rejected because of either the source MAC address or the destination MAC address.

• Input DA rejects—Number of packets that the filter rejected because the destination MAC address of the packet is not on the accept list. It is normal for this value to increment. When it increments very quickly and no traffic is entering the router from the far-end system, either there is a bad ARP entry on the far-end system, or multicast routing is not on and the far-end system is sending many multicast packets to the local router (which the router is rejecting).

  Note:

  On PTX Series routers, ignore any values displayed for Input DA rejects. Input DA rejects is not supported on PTX Series routers.

• Input SA rejects—Number of packets that the filter rejected because the source MAC address of the packet is not on the accept list. The value in this field must increment only if source MAC address filtering has been enabled. If filtering is enabled, if the value increments quickly, and if the system is not receiving traffic that it should from the far-end system, it means that the user-configured source MAC addresses for this interface are incorrect.

• Output packet count—Number of packets that the filter has given to the MAC hardware.

• Output packet pad count—Number of packets the filter padded to the minimum Ethernet size (60 bytes) before giving the packet to the MAC hardware. Usually, padding is done only on small ARP packets, but some very small IP packets can also require padding. If this value increments rapidly, either the system is trying to find an ARP entry for a far-end system that does not exist or it is misconfigured.

• Output packet error count—Number of packets with an indicated error that the filter was given to transmit. These packets are usually aged packets or are the result of a bandwidth problem on the FPC hardware. On a normal system, the value of this field must not increment.

• CAM destination filters, CAM source filters—Number of entries in the CAM dedicated to destination and source MAC address filters. There can only be up to 64 source entries. If source filtering is disabled, which is the default, the values for these fields must be 0.

PMA PHY

(10-Gigabit Ethernet interfaces, WAN PHY mode) SONET error information:

• Seconds—Number of seconds the defect has been active.

• Count—Number of times that the defect has gone from inactive to active.

• State—State of the error. Any state other than OK indicates a problem.

Subfields are:

• PHY Lock—Phase-locked loop

• PHY Light—Loss of optical signal

WIS section

(10-Gigabit Ethernet interfaces, WAN PHY mode) SONET error information:

• Seconds—Number of seconds the defect has been active.

• Count—Number of times that the defect has gone from inactive to active.

• State—State of the error. Any state other than OK indicates a problem.

Subfields are:

• BIP-B1—Bit interleaved parity for SONET section overhead

• SEF—Severely errored framing

• LOL—Loss of light

• LOF—Loss of frame

• ES-S—Errored seconds (section)

• SES-S—Severely errored seconds (section)

• SEFS-S—Severely errored framing seconds (section)

WIS line

(10-Gigabit Ethernet interfaces, WAN PHY mode) Active alarms and defects, plus counts of specific SONET errors with detailed information:

• Seconds—Number of seconds the defect has been active.

• Count—Number of times that the defect has gone from inactive to active.

• State—State of the error. Any state other than OK indicates a problem.

Subfields are:

• BIP-B2—Bit interleaved parity for SONET line overhead

• REI-L—Remote error indication (near-end line)

• RDI-L—Remote defect indication (near-end line)

• AIS-L—Alarm indication signal (near-end line)

• BERR-SF—Bit error rate fault (signal failure)

• BERR-SD—Bit error rate defect (signal degradation)

• ES-L—Errored seconds (near-end line)

• SES-L—Severely errored seconds (near-end line)

• UAS-L—Unavailable seconds (near-end line)

• ES-LFE—Errored seconds (far-end line)

• SES-LFE—Severely errored seconds (far-end line)

• UAS-LFE—Unavailable seconds (far-end line)

WIS path

(10-Gigabit Ethernet interfaces, WAN PHY mode) Active alarms and defects, plus counts of specific SONET errors with detailed information:

• Seconds—Number of seconds the defect has been active.

• Count—Number of times that the defect has gone from inactive to active.

• State—State of the error. Any state other than OK indicates a problem.

Subfields are:

• BIP-B3—Bit interleaved parity for SONET section overhead

• REI-P—Remote error indication

• LOP-P—Loss of pointer (path)

• AIS-P—Path alarm indication signal

• RDI-P—Path remote defect indication

• UNEQ-P—Path unequipped

• PLM-P—Path payload (signal) label mismatch

• ES-P—Errored seconds (near-end STS path)

• SES-P—Severely errored seconds (near-end STS path)

• UAS-P—Unavailable seconds (near-end STS path)

• SES-PFE—Severely errored seconds (far-end STS path)

• UAS-PFE—Unavailable seconds (far-end STS path)

Autonegotiation information

Information about link autonegotiation.

• Negotiation status:

  • Incomplete—Ethernet interface has the speed or link mode configured.

  • No autonegotiation—Remote Ethernet interface has the speed or link mode configured, or does not perform autonegotiation.

  • Complete—Ethernet interface is connected to a device that performs autonegotiation and the autonegotiation process is successful.

• Link partner status—OK when Ethernet interface is connected to a device that performs autonegotiation and the autonegotiation process is successful.

• Link partner—Information from the remote Ethernet device:

  • Link mode—Depending on the capability of the link partner, either Full-duplex or Half-duplex.

  • Flow control—Types of flow control supported by the link partner. For Gigabit Ethernet interfaces, types are Symmetric (link partner supports PAUSE on receive and transmit), Asymmetric (link partner supports PAUSE on transmit), Symmetric/Asymmetric (link partner supports PAUSE on receive and transmit or only PAUSE on transmit), and None (link partner does not support flow control).

  • Remote fault—Remote fault information from the link partner—Failure indicates a receive link error. OK indicates that the link partner is receiving. Negotiation error indicates a negotiation error. Offline indicates that the link partner is going offline.

• Local resolution—Information from the local Ethernet device:

  • Flow control—Types of flow control supported by the local device. For Gigabit Ethernet interfaces, advertised capabilities are Symmetric/Asymmetric (local device supports PAUSE on receive and transmit or only PAUSE on receive) and None (local device does not support flow control). Depending on the result of the negotiation with the link partner, local resolution flow control type will display Symmetric (local device supports PAUSE on receive and transmit), Asymmetric (local device supports PAUSE on receive), and None (local device does not support flow control).

  • Remote fault—Remote fault information. Link OK (no error detected on receive), Offline (local interface is offline), and Link Failure (link error detected on receive).

Received path trace, Transmitted path trace

(10-Gigabit Ethernet interfaces, WAN PHY mode) SONET/SDH interfaces allow path trace bytes to be sent inband across the SONET/SDH link. Juniper Networks and other router manufacturers use these bytes to help diagnose misconfigurations and network errors by setting the transmitted path trace message so that it contains the system hostname and name of the physical interface. The received path trace value is the message received from the router at the other end of the fiber. The transmitted path trace value is the message that this router transmits.

Packet Forwarding Engine configuration

Information about the configuration of the Packet Forwarding Engine:

• Destination slot—FPC slot number.

CoS information

Information about the CoS queue for the physical interface.

• CoS transmit queue—Queue number and its associated user-configured forwarding class name.

• Bandwidth %—Percentage of bandwidth allocated to the queue.

• Bandwidth bps—Bandwidth allocated to the queue (in bps).

• Buffer %—Percentage of buffer space allocated to the queue.

• Buffer usec—Amount of buffer space allocated to the queue, in microseconds. This value is nonzero only if the buffer size is configured in terms of time.

• Priority—Queue priority: low or high.

• Limit—Displayed if rate limiting is configured for the queue. Possible values are none and exact. If exact is configured, the queue transmits only up to the configured bandwidth, even if excess bandwidth is available. If none is configured, the queue transmits beyond the configured bandwidth if bandwidth is available.

Logical interface

Name of the logical interface.

Index

Index number of the logical interface, which reflects its initialization sequence.

SNMP ifIndex

SNMP interface index number for the logical interface.

Generation

Unique number for use by Juniper Networks technical support only.

Flags

Information about the logical interface. Possible values are described in the “Logical Interface Flags” section under Common Output Fields Description.

VLAN-Tag

Rewrite profile applied to incoming or outgoing frames on the outer (Out) VLAN tag or for both the outer and inner (In) VLAN tags.

• push—An outer VLAN tag is pushed in front of the existing VLAN tag.

• pop—The outer VLAN tag of the incoming frame is removed.

• swap—The outer VLAN tag of the incoming frame is overwritten with the user-specified VLAN tag information.

• push—An outer VLAN tag is pushed in front of the existing VLAN tag.

• push-push—Two VLAN tags are pushed in from the incoming frame.

• swap-push—The outer VLAN tag of the incoming frame is replaced by a user-specified VLAN tag value. A user-specified outer VLAN tag is pushed in front. The outer tag becomes an inner tag in the final frame.

• swap-swap—Both the inner and the outer VLAN tags of the incoming frame are replaced by the user-specified VLAN tag value.

• pop-swap—The outer VLAN tag of the incoming frame is removed, and the inner VLAN tag of the incoming frame is replaced by the user-specified VLAN tag value. The inner tag becomes the outer tag in the final frame.

• pop-pop—Both the outer and inner VLAN tags of the incoming frame are removed.

Demux

IP demultiplexing (demux) value that appears if this interface is used as the demux underlying interface. The output is one of the following:

• Source Family Inet

• Destination Family Inet

Encapsulation

Encapsulation on the logical interface.

ACI VLAN

Information displayed for agent circuit identifier (ACI) interface set configured with the agent-circuit-id autoconfiguration stanza.

Dynamic Profile—Name of the dynamic profile that defines the ACI interface set.

If configured, the ACI interface set enables the underlying Ethernet interface to create dynamic VLAN subscriber interfaces based on ACI information.

Line Identity

Information displayed for access-line-identifier (ALI) interface sets configured with the line-identity autoconfiguration stanza.

• Dynamic Profile—Name of the dynamic profile that defines the ALI interface set.

• Trusted option used to create the ALI interface set: Circuit-id, Remote-id, or Accept-no-ids. More than one option can be configured.

If configured, the ALI interface set enables the underlying Ethernet interface to create dynamic VLAN subscriber interfaces based on ALI information.

Protocol

Protocol family. Possible values are described in the “Protocol Field” section under Common Output Fields Description.

MTU

Maximum transmission unit size on the logical interface.

Neighbor Discovery Protocol (NDP)Queue Statistics

NDP statistics for protocol inet6 under logical interface statistics.

• Max nh cache—Maximum interface neighbor discovery nexthop cache size.

• New hold nh limit—Maximum number of new unresolved nexthops.

• Curr nh cnt—Current number of resolved nexthops in the NDP queue.

• Curr new hold cnt—Current number of unresolved nexthops in the NDP queue.

• NH drop cnt—Number of NDP requests not serviced.

Dynamic Profile

Name of the dynamic profile that was used to create this interface configured with a Point-to-Point Protocol over Ethernet (PPPoE) family.

Service Name Table

Name of the service name table for the interface configured with a PPPoE family.

Max Sessions

Maximum number of PPPoE logical interfaces that can be activated on the underlying interface.

Duplicate Protection

State of PPPoE duplicate protection: On or Off. When duplicate protection is configured for the underlying interface, a dynamic PPPoE logical interface cannot be activated when an existing active logical interface is present for the same PPPoE client.

Direct Connect

State of the configuration to ignore DSL Forum VSAs: On or Off. When configured, the router ignores any of these VSAs received from a directly connected CPE device on the interface.

AC Name

Name of the access concentrator.

Maximum labels

Maximum number of MPLS labels configured for the MPLS protocol family on the logical interface.

Traffic statistics

Number and rate of bytes and packets received and transmitted on the specified interface set.

• Input bytes, Output bytes—Number of bytes received and transmitted on the interface set. The value in this field also includes the Layer 2 overhead bytes for ingress or egress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

• Input packets, Output packets—Number of packets received and transmitted on the interface set.

IPv6 transit statistics

Number of IPv6 transit bytes and packets received and transmitted on the logical interface if IPv6 statistics tracking is enabled.

Local statistics

Number and rate of bytes and packets destined to the router.

Transit statistics

Number and rate of bytes and packets transiting the switch.

Generation

Unique number for use by Juniper Networks technical support only.

Route Table

Route table in which the logical interface address is located. For example, 0 refers to the routing table inet.0.

Flags

Information about protocol family flags. Possible values are described in the “Family Flags” section under Common Output Fields Description.

Donor interface

(Unnumbered Ethernet) Interface from which an unnumbered Ethernet interface borrows an IPv4 address.

Preferred source address

(Unnumbered Ethernet) Secondary IPv4 address of the donor loopback interface that acts as the preferred source address for the unnumbered Ethernet interface.

Input Filters

Names of any input filters applied to this interface. If you specify a precedence value for any filter in a dynamic profile, filter precedence values appear in parentheses next to all interfaces.

Output Filters

Names of any output filters applied to this interface. If you specify a precedence value for any filter in a dynamic profile, filter precedence values appear in parentheses next to all interfaces.

Mac-Validate Failures

Number of MAC address validation failures for packets and bytes. This field is displayed when MAC address validation is enabled for the logical interface.

Addresses, Flags

Information about the address flags. Possible values are described in the “Addresses Flags” section under Common Output Fields Description.

protocol-family

Protocol family configured on the logical interface. If the protocol is inet, the IP address of the interface is also displayed.

Flags

Information about the address flag. Possible values are described in the “Addresses Flags” section under Common Output Fields Description.

Destination

IP address of the remote side of the connection.

Local

IP address of the logical interface.

Broadcast

Broadcast address of the logical interface.

Generation

Unique number for use by Juniper Networks technical support only.

Physical interface

Name of the physical interface.

All levels

Enabled

State of the interface. Possible values are described in the “Enabled Field” section under Common Output Fields Description.

All levels

Interface index

Index number of the physical interface, which reflects its initialization sequence.

detail extensive none

SNMP ifIndex

SNMP index number for the physical interface.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Link-level type

Encapsulation being used on the physical interface.

All levels

MTU

Maximum transmission unit size on the physical interface.

All levels

Speed

Speed at which the interface is running.

All levels

Loopback

Loopback status: Enabled or Disabled. If loopback is enabled, type of loopback: Local or Remote.

All levels

Source filtering

Source filtering status: Enabled or Disabled.

All levels

LAN-PHY mode

10-Gigabit Ethernet interface operating in Local Area Network Physical Layer Device (LAN PHY) mode. LAN PHY allows 10-Gigabit Ethernet wide area links to use existing Ethernet applications.

All levels

WAN-PHY mode

10-Gigabit Ethernet interface operating in Wide Area Network Physical Layer Device (WAN PHY) mode. WAN PHY allows 10-Gigabit Ethernet wide area links to use fiber-optic cables and other devices intended for SONET/SDH.

All levels

Unidirectional

Unidirectional link mode status for 10-Gigabit Ethernet interface: Enabled or Disabled for parent interface; Rx-only or Tx-only for child interfaces.

All levels

Flow control

Flow control status: Enabled or Disabled.

All levels

Auto-negotiation

(Gigabit Ethernet interfaces) Autonegotiation status: Enabled or Disabled.

All levels

Remote-fault

(Gigabit Ethernet interfaces) Remote fault status:

• Online—Autonegotiation is manually configured as online.

• Offline—Autonegotiation is manually configured as offline.

All levels

Device flags

Information about the physical device. Possible values are described in the “Device Flags” section under Common Output Fields Description.

All levels

Interface flags

Information about the interface. Possible values are described in the “Interface Flags” section under Common Output Fields Description.

All levels

Link flags

Information about the link. Possible values are described in the “Links Flags” section under Common Output Fields Description.

All levels

Wavelength

(10-Gigabit Ethernet dense wavelength-division multiplexing [DWDM] interfaces) Displays the configured wavelength, in nanometers (nm).

All levels

Frequency

(10-Gigabit Ethernet DWDM interfaces only) Displays the frequency associated with the configured wavelength, in terahertz (THz).

All levels

CoS queues

Number of CoS queues configured.

detail extensive none

Schedulers

(Gigabit Ethernet intelligent queuing 2 (IQ2) interfaces only) Number of CoS schedulers configured.

extensive

Hold-times

Current interface hold-time up and hold-time down, in milliseconds.

detail extensive

Current address

Configured MAC address.

detail extensive none

Hardware address

Hardware MAC address.

detail extensive none

Last flapped

Date, time, and how long ago the interface went from down to up. The format is Last flapped: year-month-day hour:minute:second:timezone (hour:minute:second ago). For example, Last flapped: 2002-04-26 10:52:40 PDT (04:33:20 ago).

detail extensive none

Input Rate

Input rate in bits per second (bps) and packets per second (pps). The value in this field also includes the Layer 2 overhead bytes for ingress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

None specified

Output Rate

Output rate in bps and pps. The value in this field also includes the Layer 2 overhead bytes for egress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

None specified

Statistics last cleared

Time when the statistics for the interface were last set to zero.

detail extensive

Egress account overhead

Layer 2 overhead in bytes that is accounted in the interface statistics for egress traffic.

detail extensive

Ingress account overhead

Layer 2 overhead in bytes that is accounted in the interface statistics for ingress traffic.

detail extensive

Traffic statistics

Number and rate of bytes and packets received and transmitted on the physical interface.

• Input bytes—Number of bytes received on the interface. The value in this field also includes the Layer 2 overhead bytes for ingress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

• Output bytes—Number of bytes transmitted on the interface. The value in this field also includes the Layer 2 overhead bytes for egress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

• Input packets—Number of packets received on the interface.

• Output packets—Number of packets transmitted on the interface.

detail extensive

Input errors

Input errors on the interface. The following paragraphs explain the counters whose meaning might not be obvious:

• Errors—Sum of the incoming frame terminated and FCS errors.

• Drops—Number of packets dropped by the input queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet that is dropped by the ASIC's RED mechanism.

• Framing errors—Number of packets received with an invalid frame checksum (FCS).

• Runts—Number of frames received that are smaller than the runt threshold.

• Policed discards—Number of frames that the incoming packet match code discarded because they were not recognized or not of interest. Usually, this field reports protocols that the Junos OS does not handle.

• L3 incompletes—Number of incoming packets discarded because they failed Layer 3 (usually IPv4) sanity checks of the header. For example, a frame with less than 20 bytes of available IP header is discarded. L3 incomplete errors can be ignored by configuring the ignore-l3-incompletes statement.

• L2 channel errors—Number of times the software did not find a valid logical interface for an incoming frame.

• L2 mismatch timeouts—Number of malformed or short packets that caused the incoming packet handler to discard the frame as unreadable.

• FIFO errors—Number of FIFO errors in the receive direction that are reported by the ASIC on the PIC. If this value is ever nonzero, the PIC is probably malfunctioning.

• Resource errors—Sum of transmit drops.

extensive

Output errors

Output errors on the interface. The following paragraphs explain the counters whose meaning might not be obvious:

• Carrier transitions—Number of times the interface has gone from down to up. This number does not normally increment quickly, increasing only when the cable is unplugged, the far-end system is powered down and then up, or another problem occurs. If the number of carrier transitions increments quickly (perhaps once every 10 seconds), the cable, the far-end system, or the PIC or PIM is malfunctioning.

• Errors—Sum of the outgoing frame terminated and FCS errors.

• Drops—Number of packets dropped by the output queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet that is dropped by the ASIC's RED mechanism.

• Collisions—Number of Ethernet collisions. The Gigabit Ethernet PIC supports only full-duplex operation, so for Gigabit Ethernet PICs, this number should always remain 0. If it is nonzero, there is a software bug.

• Aged packets—Number of packets that remained in shared packet SDRAM so long that the system automatically purged them. The value in this field should never increment. If it does, it is most likely a software bug or possibly malfunctioning hardware.

• FIFO errors—Number of FIFO errors in the send direction as reported by the ASIC on the PIC. If this value is ever nonzero, the PIC is probably malfunctioning.

• HS link CRC errors—Number of errors on the high-speed links between the ASICs responsible for handling the router interfaces.

• MTU errors—Number of packets whose size exceeded the MTU of the interface.

• Resource errors—Sum of transmit drops.

extensive

Egress queues

Total number of egress queues supported on the specified interface.

detail extensive

Queue counters (Egress)

CoS queue number and its associated user-configured forwarding class name.

• Queued packets—Number of queued packets.

• Transmitted packets—Number of transmitted packets.

• Dropped packets—Number of packets dropped by the ASIC's RED mechanism.

detail extensive

Ingress queues

Total number of ingress queues supported on the specified interface. Displayed on IQ2 interfaces.

extensive

Queue counters (Ingress)

CoS queue number and its associated user-configured forwarding class name. Displayed on IQ2 interfaces.

• Queued packets—Number of queued packets.

• Transmitted packets—Number of transmitted packets.

• Dropped packets—Number of packets dropped by the ASIC's RED mechanism.

extensive

Active alarms and Active defects

Ethernet-specific defects that can prevent the interface from passing packets. When a defect persists for a certain amount of time, it is promoted to an alarm. Based on the routing device configuration, an alarm can ring the red or yellow alarm bell on the routing device, or turn on the red or yellow alarm LED on the craft interface. These fields can contain the value None or Link.

• None—There are no active defects or alarms.

• Link—Interface has lost its link state, which usually means that the cable is unplugged, the far-end system has been turned off, or the PIC is malfunctioning.

detail extensive none

OTN alarms

Active OTN alarms identified on the interface.

detail extensive

OTN defects

OTN defects received on the interface.

detail extensive

OTN FEC Mode

The FECmode configured on the interface.

• efec—Enhanced forward error correction (EFEC) is configured to defect and correct bit errors.

• gfec—G.709 Forward error correction (GFEC) mode is configured to detect and correct bit errors.

• none—FEC mode is not configured.

detail extensive

OTN Rate

OTN mode.

• fixed-stuff-bytes—Fixed stuff bytes 11.0957 Gbps.

• no-fixed-stuff-bytes—No fixed stuff bytes 11.0491 Gbps.

• pass-through—Enable OTN passthrough mode.

• no-pass-through—Do not enable OTN passthrough mode.

detail extensive

OTN Line Loopback

Status of the line loopback, if configured for the DWDM OTN PIC. Its value can be: enabled or disabled.

detail extensive

OTN FEC statistics

The forward error correction (FEC) counters for the DWDM OTN PIC.

• Corrected Errors—The count of corrected errors in the last second.

• Corrected Error Ratio—The corrected error ratio in the last 25 seconds. For example, 1e-7 is 1 error per 10 million bits.

detail extensive

OTN FEC alarms

OTN FEC excessive or degraded error alarms triggered on the interface.

• FEC Degrade—OTU FEC Degrade defect.

• FEC Excessive—OTU FEC Excessive Error defect.

detail extensive

OTN OC

OTN OC defects triggered on the interface.

• LOS—OC Loss of Signal defect.

• LOF—OC Loss of Frame defect.

• LOM—OC Loss of Multiframe defect.

• Wavelength Lock—OC Wavelength Lock defect.

detail extensive

OTN OTU

OTN OTU defects detected on the interface

• AIS—OTN AIS alarm.

• BDI—OTN OTU BDI alarm.

• IAE—OTN OTU IAE alarm.

• TTIM—OTN OTU TTIM alarm.

• SF—OTN ODU bit error rate fault alarm.

• SD—OTN ODU bit error rate defect alarm.

• TCA-ES—OTN ODU ES threshold alarm.

• TCA-SES—OTN ODU SES threshold alarm.

• TCA-UAS—OTN ODU UAS threshold alarm.

• TCA-BBE—OTN ODU BBE threshold alarm.

• BIP—OTN ODU BIP threshold alarm.

• BBE—OTN OTU BBE threshold alarm.

• ES—OTN OTU ES threshold alarm.

• SES—OTN OTU SES threshold alarm.

• UAS—OTN OTU UAS threshold alarm.

detail extensive

Received DAPI

Destination Access Port Interface (DAPI) from which the packets were received.

detail extensive

Received SAPI

Source Access Port Interface (SAPI) from which the packets were received.

detail extensive

Transmitted DAPI

Destination Access Port Interface (DAPI) to which the packets were transmitted.

detail extensive

Transmitted SAPI

Source Access Port Interface (SAPI) to which the packets were transmitted.

detail extensive

PCS statistics

(10-Gigabit Ethernet interfaces) Displays Physical Coding Sublayer (PCS) fault conditions from the WAN PHY or the LAN PHY device.

• Bit errors—The number of seconds during which at least one bit error rate (BER) occurred while the PCS receiver is operating in normal mode.

• Errored blocks—The number of seconds when at least one errored block occurred while the PCS receiver is operating in normal mode.

detail extensive

MAC statistics

Receive and Transmit statistics reported by the PIC's MAC subsystem, including the following:

• Total octets and total packets—Total number of octets and packets. For Gigabit Ethernet IQ PICs, the received octets count varies by interface type.

• Unicast packets, Broadcast packets, and Multicast packets—Number of unicast, broadcast, and multicast packets.

• CRC/Align errors—Total number of packets received that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets, inclusive, and had either a bad FCS with an integral number of octets (FCS Error) or a bad FCS with a nonintegral number of octets (Alignment Error).

• FIFO error—Number of FIFO errors that are reported by the ASIC on the PIC. If this value is ever nonzero, the PIC or a cable is probably malfunctioning.

• MAC control frames—Number of MAC control frames.

• MAC pause frames—Number of MAC control frames with pause operational code.

• Oversized frames—Number of frames that exceed 1518 octets.

• Jabber frames—Number of frames that were longer than 1518 octets (excluding framing bits, but including FCS octets), and had either an FCS error or an alignment error. This definition of jabber is different from the definition in IEEE-802.3 section 8.2.1.5 (10BASE5) and section 10.3.1.4 (10BASE2). These documents define jabber as the condition in which any packet exceeds 20 ms. The allowed range to detect jabber is from 20 ms to 150 ms.

• Fragment frames—Total number of packets that were less than 64 octets in length (excluding framing bits, but including FCS octets), and had either an FCS error or an alignment error. Fragment frames normally increment because both runts (which are normal occurrences caused by collisions) and noise hits are counted.

• VLAN tagged frames—Number of frames that are VLAN tagged. The system uses the TPID of 0x8100 in the frame to determine whether a frame is tagged or not.

• Code violations—Number of times an event caused the PHY to indicate “Data reception error” or “invalid data symbol error.”

extensive

OTN Received Overhead Bytes

APS/PCC0: 0x02, APS/PCC1: 0x11, APS/PCC2: 0x47, APS/PCC3: 0x58 Payload Type: 0x08

extensive

OTN Transmitted Overhead Bytes

APS/PCC0: 0x00, APS/PCC1: 0x00, APS/PCC2: 0x00, APS/PCC3: 0x00 Payload Type: 0x08

extensive

Filter statistics

Receive and Transmit statistics reported by the PIC's MAC address filter subsystem. The filtering is done by the content-addressable memory (CAM) on the PIC. The filter examines a packet's source and destination MAC addresses to determine whether the packet should enter the system or be rejected.

• Input packet count—Number of packets received from the MAC hardware that the filter processed.

• Input packet rejects—Number of packets that the filter rejected because of either the source MAC address or the destination MAC address.

• Input DA rejects—Number of packets that the filter rejected because the destination MAC address of the packet is not on the accept list. It is normal for this value to increment. When it increments very quickly and no traffic is entering the routing device from the far-end system, either there is a bad ARP entry on the far-end system, or multicast routing is not on and the far-end system is sending many multicast packets to the local routing device (which the routing device is rejecting).

• Input SA rejects—Number of packets that the filter rejected because the source MAC address of the packet is not on the accept list. The value in this field should increment only if source MAC address filtering has been enabled. If filtering is enabled, if the value increments quickly, and if the system is not receiving traffic that it should from the far-end system, it means that the user-configured source MAC addresses for this interface are incorrect.

• Output packet count—Number of packets that the filter has given to the MAC hardware.

• Output packet pad count—Number of packets the filter padded to the minimum Ethernet size (60 bytes) before giving the packet to the MAC hardware. Usually, padding is done only on small ARP packets, but some very small IP packets can also require padding. If this value increments rapidly, either the system is trying to find an ARP entry for a far-end system that does not exist or it is misconfigured.

• Output packet error count—Number of packets with an indicated error that the filter was given to transmit. These packets are usually aged packets or are the result of a bandwidth problem on the FPC hardware. On a normal system, the value of this field should not increment.

• CAM destination filters, CAM source filters—Number of entries in the CAM dedicated to destination and source MAC address filters. There can only be up to 64 source entries. If source filtering is disabled, which is the default, the values for these fields should be 0.

extensive

PMA PHY

(10-Gigabit Ethernet interfaces, WAN PHY mode) SONET error information:

• Seconds—Number of seconds the defect has been active.

• Count—Number of times that the defect has gone from inactive to active.

• State—State of the error. Any state other than OK indicates a problem.

extensive

WIS section

(10-Gigabit Ethernet interfaces, WAN PHY mode) SONET error information:

• Seconds—Number of seconds the defect has been active.

• Count—Number of times that the defect has gone from inactive to active.

• State—State of the error. Any state other than OK indicates a problem.

Subfields are:

• BIP-B1—Bit interleaved parity for SONET section overhead

• SEF—Severely errored framing

• LOL—Loss of light

• LOF—Loss of frame

• ES-S—Errored seconds (section)

• SES-S—Severely errored seconds (section)

• SEFS-S—Severely errored framing seconds (section)

extensive

WIS line

(10-Gigabit Ethernet interfaces, WAN PHY mode) Active alarms and defects, plus counts of specific SONET errors with detailed information.

• Seconds—Number of seconds the defect has been active.

• Count—Number of times that the defect has gone from inactive to active.

• State—State of the error. State other than OK indicates a problem.

Subfields are:

• BIP-B2—Bit interleaved parity for SONET line overhead

• REI-L—Remote error indication (near-end line)

• RDI-L—Remote defect indication (near-end line)

• AIS-L—Alarm indication signal (near-end line)

• BERR-SF—Bit error rate fault (signal failure)

• BERR-SD—Bit error rate defect (signal degradation)

• ES-L—Errored seconds (near-end line)

• SES-L—Severely errored seconds (near-end line)

• UAS-L—Unavailable seconds (near-end line)

• ES-LFE—Errored seconds (far-end line)

• SES-LFE—Severely errored seconds (far-end line)

• UAS-LFE—Unavailable seconds (far-end line)

extensive

WIS path

(10-Gigabit Ethernet interfaces, WAN PHY mode) Active alarms and defects, plus counts of specific SONET errors with detailed information.

• Seconds—Number of seconds the defect has been active.

• Count—Number of times that the defect has gone from inactive to active.

• State—State of the error. Any state other than OK indicates a problem.

Subfields are:

• BIP-B3—Bit interleaved parity for SONET section overhead

• REI-P—Remote error indication

• LOP-P—Loss of pointer (path)

• AIS-P—Path alarm indication signal

• RDI-P—Path remote defect indication

• UNEQ-P—Path unequipped

• PLM-P—Path payload label mismatch

• ES-P—Errored seconds (near-end STS path)

• SES-P—Severely errored seconds (near-end STS path)

• UAS-P—Unavailable seconds (near-end STS path)

• SES-PFE—Severely errored seconds (far-end STS path)

• UAS-PFE—Unavailable seconds (far-end STS path)

extensive

Autonegotiation information

Information about link autonegotiation.

• Negotiation status:

  • Incomplete—Ethernet interface has the speed or link mode configured.

  • No autonegotiation—Remote Ethernet interface has the speed or link mode configured, or does not perform autonegotiation.

  • Complete—Ethernet interface is connected to a device that performs autonegotiation and the autonegotiation process is successful.

• Link partner status—OK when Ethernet interface is connected to a device that performs autonegotiation and the autonegotiation process is successful.

• Link partner:

  • Link mode—Depending on the capability of the attached Ethernet device, either Full-duplex or Half-duplex.

  • Flow control—Types of flow control supported by the remote Ethernet device. For Fast Ethernet interfaces, the type is None. For Gigabit Ethernet interfaces, types are Symmetric (link partner supports PAUSE on receive and transmit), Asymmetric (link partner supports PAUSE on transmit), and Symmetric/Asymmetric (link partner supports both PAUSE on receive and transmit or only PAUSE receive).

  • Remote fault—Remote fault information from the link partner—Failure indicates a receive link error. OK indicates that the link partner is receiving. Negotiation error indicates a negotiation error. Offline indicates that the link partner is going offline.

• Local resolution—Information from the link partner:

  • Flow control—Types of flow control supported by the remote Ethernet device. For Gigabit Ethernet interfaces, types are Symmetric (link partner supports PAUSE on receive and transmit), Asymmetric (link partner supports PAUSE on transmit), and Symmetric/Asymmetric (link partner supports both PAUSE on receive and transmit or only PAUSE receive).

  • Remote fault—Remote fault information. Link OK (no error detected on receive), Offline (local interface is offline), and Link Failure (link error detected on receive).

extensive

Received path trace, Transmitted path trace

(10-Gigabit Ethernet interfaces, WAN PHY mode) SONET/SDH interfaces allow path trace bytes to be sent inband across the SONET/SDH link. Juniper Networks and other router manufacturers use these bytes to help diagnose misconfigurations and network errors by setting the transmitted path trace message so that it contains the system hostname and name of the physical interface. The received path trace value is the message received from the routing device at the other end of the fiber. The transmitted path trace value is the message that this routing device transmits.

extensive

Packet Forwarding Engine configuration

Information about the configuration of the Packet Forwarding Engine:

• Destination slot—FPC slot number.

extensive

CoS information

Information about the CoS queue for the physical interface.

• CoS transmit queue—Queue number and its associated user-configured forwarding class name.

• Bandwidth %—Percentage of bandwidth allocated to the queue.

• Bandwidth bps—Bandwidth allocated to the queue (in bps).

• Buffer %—Percentage of buffer space allocated to the queue.

• Buffer usec—Amount of buffer space allocated to the queue, in microseconds. This value is nonzero only if the buffer size is configured in terms of time.

• Priority—Queue priority: low or high.

• Limit—Displayed if rate limiting is configured for the queue. Possible values are none and exact. If exact is configured, the queue transmits only up to the configured bandwidth, even if excess bandwidth is available. If none is configured, the queue transmits beyond the configured bandwidth if bandwidth is available.

extensive

Logical interface

Name of the logical interface.

All levels

Index

Index number of the logical interface, which reflects its initialization sequence.

detail extensive none

SNMP ifIndex

SNMP interface index number for the logical interface.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Flags

Information about the logical interface. Possible values are described in the “Logical Interface Flags” section under Common Output Fields Description.

All levels

VLAN-Tag

Rewrite profile applied to incoming or outgoing frames on the outer (Out) VLAN tag or for both the outer and inner (In) VLAN tags.

• push—An outer VLAN tag is pushed in front of the existing VLAN tag.

• pop—The outer VLAN tag of the incoming frame is removed.

• swap—The outer VLAN tag of the incoming frame is overwritten with the user specified VLAN tag information.

• push—An outer VLAN tag is pushed in front of the existing VLAN tag.

• push-push—Two VLAN tags are pushed in from the incoming frame.

• swap-push—The outer VLAN tag of the incoming frame is replaced by a user-specified VLAN tag value. A user-specified outer VLAN tag is pushed in front. The outer tag becomes an inner tag in the final frame.

• swap-swap—Both the inner and the outer VLAN tags of the incoming frame are replaced by the user specified VLAN tag value.

• pop-swap—The outer VLAN tag of the incoming frame is removed, and the inner VLAN tag of the incoming frame is replaced by the user-specified VLAN tag value. The inner tag becomes the outer tag in the final frame.

• pop-pop—Both the outer and inner VLAN tags of the incoming frame are removed.

brief detail extensive none

Demux:

IP demultiplexing (demux) value that appears if this interface is used as the demux underlying interface. The output is one of the following:

• Source Family Inet

• Destination Family Inet

detail extensive none

Encapsulation

Encapsulation on the logical interface.

All levels

Protocol

Protocol family. Possible values are described in the “Protocol Field” section under Common Output Fields Description.

detail extensive none

MTU

Maximum transmission unit size on the logical interface.

detail extensive none

Maximum labels

Maximum number of MPLS labels configured for the MPLS protocol family on the logical interface.

detail extensive none

Traffic statistics

Number and rate of bytes and packets received and transmitted on the specified interface set.

• Input bytes, Output bytes—Number of bytes received and transmitted on the interface set. The value in this field also includes the Layer 2 overhead bytes for ingress or egress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

• Input packets, Output packets—Number of packets received and transmitted on the interface set.

detail extensive

IPv6 transit statistics

Number of IPv6 transit bytes and packets received and transmitted on the logical interface if IPv6 statistics tracking is enabled.

extensive

Local statistics

Number and rate of bytes and packets destined to the routing device.

extensive

Transit statistics

Number and rate of bytes and packets transiting the switch.

extensive

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Route Table

Route table in which the logical interface address is located. For example, 0 refers to the routing table inet.0.

detail extensive none

Flags

Information about protocol family flags. Possible values are described in the “Family Flags” section under Common Output Fields Description.

detail extensive

Donor interface

(Unnumbered Ethernet) Interface from which an unnumbered Ethernet interface borrows an IPv4 address.

detail extensive none

Preferred source address

(Unnumbered Ethernet) Secondary IPv4 address of the donor loopback interface that acts as the preferred source address for the unnumbered Ethernet interface.

detail extensive none

Input Filters

Names of any input filters applied to this interface. If you specify a precedence value for any filter in a dynamic profile, filter precedence values appear in parenthesis next to all interfaces.

detail extensive

Output Filters

Names of any output filters applied to this interface. If you specify a precedence value for any filter in a dynamic profile, filter precedence values appear in parenthesis next to all interfaces.

detail extensive

Mac-Validate Failures

Number of MAC address validation failures for packets and bytes. This field is displayed when MAC address validation is enabled for the logical interface.

detail extensive none

Addresses, Flags

Information about the address flags. Possible values are described in the “Addresses Flags” section under Common Output Fields Description.

detail extensive none

protocol-family

Protocol family configured on the logical interface. If the protocol is inet, the IP address of the interface is also displayed.

brief

Flags

Information about address flag (possible values are described in the “Addresses Flags” section under Common Output Fields Description.

detail extensive none

Destination

IP address of the remote side of the connection.

detail extensive none

Local

IP address of the logical interface.

detail extensive none

Broadcast

Broadcast address of the logical interlace.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Inbound physical interface

show interfaces ge-0/3/0 extensive

Traffic statistics:

Input bytes: 496 bytes per packet, representing the Layer 2 packet

MAC statistics:

Received octets: 500 bytes per packet, representing the Layer 2 packet + 4 bytes

Inbound logical interface

show interfaces ge-0/3/0.50 extensive

Traffic statistics:

Input bytes: 478 bytes per packet, representing the Layer 3 packet

Outbound physical interface

show interfaces ge-0/0/0 extensive

Traffic statistics:

Input bytes: 490 bytes per packet, representing the Layer 3 packet + 12 bytes

MAC statistics:

Received octets: 478 bytes per packet, representing the Layer 3 packet

Outbound logical interface

show interfaces ge-0/0/0.50 extensive

Traffic statistics:

Input bytes: 478 bytes per packet, representing the Layer 3 packet

Physical interface

Name of the physical interface.

Enabled

State of the interface.

Interface index

Index number of the physical interface, which reflects its initialization sequence.

SNMP ifIndex

SNMP index number for the physical interface.

Link-level type

Encapsulation being used on the physical interface.

Generation

Unique number for use by Juniper Networks technical support only.

MTU

Maximum transmission unit size on the physical interface.

Link mode

Link mode: Full-duplex or Half-duplex.

Speed

Speed at which the interface is running.

BPDU error

Bridge protocol data unit (BPDU) error: Detected or None

Loopback

Loopback status: Enabled or Disabled. If loopback is enabled, type of loopback: Local or Remote.

Source filtering

Source filtering status: Enabled or Disabled.

Flow control

Flow control status: Enabled or Disabled.

Auto-negotiation

(Gigabit Ethernet interfaces) Autonegotiation status: Enabled or Disabled.

Remote-fault

(Gigabit Ethernet interfaces) Remote fault status:

• Online—Autonegotiation is manually configured as online.

• Offline—Autonegotiation is manually configured as offline.

Device flags

Information about the physical device.

Interface flags

Information about the interface.

Link flags

Information about the physical link.

CoS queues

Number of CoS queues configured.

Current address

Configured MAC address.

Last flapped

Date, time, and how long ago the interface went from down to up. The format is Last flapped: year-month-day hour:minute:second:timezone (hour:minute:second ago). For example, Last flapped: 2002-04-26 10:52:40 PDT (04:33:20 ago).

Input Rate

Input rate in bits per second (bps) and packets per second (pps).

Output Rate

Output rate in bps and pps.

Active alarms and Active defects

Ethernet-specific defects that can prevent the interface from passing packets. When a defect persists for a certain amount of time, it is promoted to an alarm. These fields can contain the value None or Link.

• None—There are no active defects or alarms.

• Link—Interface has lost its link state, which usually means that the cable is unplugged, the far-end system has been turned off, or the PIC is malfunctioning.

Statistics last cleared

Time when the statistics for the interface were last set to zero.

Traffic statistics

Number and rate of bytes and packets received and transmitted on the physical interface.

• Input bytes—Number of bytes received on the interface.

• Output bytes—Number of bytes transmitted on the interface.

• Input packets—Number of packets received on the interface.

• Output packets—Number of packets transmitted on the interface.

Input errors

Input errors on the interface.

• Errors—Sum of the incoming frame terminated and FCS errors.

• Drops—Number of packets dropped by the input queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet that is dropped by the ASIC's RED mechanism.

• Framing errors—Number of packets received with an invalid frame checksum (FCS).

• Runts—Number of frames received that are smaller than the runt threshold.

• Policed discards—Number of frames that the incoming packet match code discarded because they were not recognized or not of interest. Usually, this field reports protocols that Junos OS does not handle.

• L3 incompletes—Number of incoming packets discarded because they failed Layer 3 (usually IPv4) sanity checks of the header. For example, a frame with less than 20 bytes of available IP header is discarded. L3 incomplete errors can be ignored by configuring the ignore-l3-incompletes .

• L2 channel errors—Number of times the software did not find a valid logical interface for an incoming frame.

• L2 mismatch timeouts—Number of malformed or short packets that caused the incoming packet handler to discard the frame as unreadable.

• FIFO errors—Number of FIFO errors in the receive direction that are reported by the ASIC on the PIC. If this value is ever nonzero, the PIC is probably malfunctioning.

• Resource errors—Sum of transmit drops.

Output errors

Output errors on the interface.

• Carrier transitions—Number of times the interface has gone from down to up. This number does not normally increment quickly, increasing only when the cable is unplugged, the far-end system is powered down and then up, or another problem occurs. If the number of carrier transitions increments quickly (perhaps once every 10 seconds), the cable, the far-end system, or the PIC or PIM is malfunctioning.

• Errors—Sum of the outgoing frame terminated and FCS errors.

• Drops—Number of packets dropped by the output queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet that is dropped by the ASIC's RED mechanism.

• Collisions—Number of Ethernet collisions. The Gigabit Ethernet PIC supports only full-duplex operation; therefore, for Gigabit Ethernet PICs, this number must always remain 0. If it is nonzero, there is a software bug.

• Aged packets—Number of packets that remained in shared packet SDRAM so long that the system automatically purged them. The value in this field must never increment. If it does, it is most likely a software bug or possibly malfunctioning hardware.

• FIFO errors—Number of FIFO errors in the send direction as reported by the ASIC on the PIC. If this value is ever nonzero, the PIC is probably malfunctioning.

• HS link CRC errors—Number of errors on the high-speed links between the ASICs responsible for handling the interfaces.

• MTU errors—Number of packets whose size exceeded the MTU of the interface.

• Resource errors—Sum of transmit drops.

Ingress queues

Total number of ingress queues supported on the specified interface.

Queue counters and queue number

CoS queue number and its associated user-configured forwarding class name.

• Queued packets—Number of queued packets.

• Transmitted packets—Number of transmitted packets.

• Dropped packets—Number of packets dropped by the ASIC's RED mechanism.

ECN CE marked packets

Number of packets marked with CE (congestion experienced) due to congestion on a port.

MAC statistics

Receive and Transmit statistics reported by the PIC's MAC subsystem, including the following:

• Total octets and total packets—Total number of octets and packets.

• Unicast packets, Broadcast packets, and Multicast packets—Number of unicast, broadcast, and multicast packets.

• CRC/Align errors—Total number of packets received that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets, inclusive, and had either a bad FCS with an integral number of octets (FCS Error) or a bad FCS with a nonintegral number of octets (Alignment Error).

• FIFO error—Number of FIFO errors that are reported by the ASIC on the PIC. If this value is ever nonzero, the PIC or a cable is probably malfunctioning.

• MAC control frames—Number of MAC control frames.

• MAC pause frames—Number of MAC control frames with pause operational code.

• Oversized frames—There are two possible conditions regarding the number of oversized frames:

  • Packet length exceeds 1518 octets, or

  • Packet length exceeds MRU

• Jabber frames—Number of frames that were longer than 1518 octets (excluding framing bits, but including FCS octets), and had either an FCS error or an alignment error. This definition of jabber is different from the definition in IEEE-802.3 section 8.2.1.5 (10BASE5) and section 10.3.1.4 (10BASE2). These documents define jabber as the condition in which any packet exceeds 20 ms. The allowed range to detect jabber is from 20 ms to 150 ms.

• Fragment frames—Total number of packets that were less than 64 octets in length (excluding framing bits, but including FCS octets) and had either an FCS error or an alignment error. Fragment frames normally increment because both runts (which are normal occurrences caused by collisions) and noise hits are counted.

• VLAN tagged frames—Number of frames that are VLAN tagged. The system uses the TPID of 0x8100 in the frame to determine whether a frame is tagged or not.

• Code violations—Number of times an event caused the PHY to indicate “Data reception error” or “invalid data symbol error.”

Filter statistics

Receive and Transmit statistics reported by the PIC's MAC address filter subsystem. The filtering is done by the content-addressable memory (CAM) on the PIC. The filter examines a packet's source and destination MAC addresses to determine whether the packet should enter the system or be rejected.

• Input packet count—Number of packets received from the MAC hardware that the filter processed.

• Input packet rejects—Number of packets that the filter rejected because of either the source MAC address or the destination MAC address.

• Input DA rejects—Number of packets that the filter rejected because the destination MAC address of the packet is not on the accept list. It is normal for this value to increment. When it increments very quickly and no traffic is entering the device from the far-end system, either there is a bad ARP entry on the far-end system, or multicast routing is not on and the far-end system is sending many multicast packets to the local device (which the router is rejecting).

• Input SA rejects—Number of packets that the filter rejected because the source MAC address of the packet is not on the accept list. The value in this field should increment only if source MAC address filtering has been enabled. If filtering is enabled, if the value increments quickly, and if the system is not receiving traffic that it should from the far-end system, it means that the user-configured source MAC addresses for this interface are incorrect.

• Output packet count—Number of packets that the filter has given to the MAC hardware.

• Output packet pad count—Number of packets the filter padded to the minimum Ethernet size (60 bytes) before giving the packet to the MAC hardware. Usually, padding is done only on small ARP packets, but some very small IP packets can also require padding. If this value increments rapidly, either the system is trying to find an ARP entry for a far-end system that does not exist or it is misconfigured.

• Output packet error count—Number of packets with an indicated error that the filter was given to transmit. These packets are usually aged packets or are the result of a bandwidth problem on the FPC hardware. On a normal system, the value of this field should not increment.

• CAM destination filters, CAM source filters—Number of entries in the CAM dedicated to destination and source MAC address filters. There can only be up to 64 source entries. If source filtering is disabled, which is the default, the values for these fields must be 0.

Autonegotiation information

Information about link autonegotiation.

• Negotiation status:

  • Incomplete—Ethernet interface has the speed or link mode configured.

  • No autonegotiation—Remote Ethernet interface has the speed or link mode configured, or does not perform autonegotiation.

  • Complete—Ethernet interface is connected to a device that performs autonegotiation and the autonegotiation process is successful.

Packet Forwarding Engine configuration

Information about the configuration of the Packet Forwarding Engine:

• Destination slot—FPC slot number.

CoS information

Information about the CoS queue for the physical interface.

• CoS transmit queue—Queue number and its associated user-configured forwarding class name.

• Bandwidth %—Percentage of bandwidth allocated to the queue.

• Bandwidth bps—Bandwidth allocated to the queue (in bps).

• Buffer %—Percentage of buffer space allocated to the queue.

• Buffer usec—Amount of buffer space allocated to the queue, in microseconds. This value is nonzero only if the buffer size is configured in terms of time.

• Priority—Queue priority: low or high.

• Limit—Displayed if rate limiting is configured for the queue. Possible values are none and exact. If exact is configured, the queue transmits only up to the configured bandwidth, even if excess bandwidth is available. If none is configured, the queue transmits beyond the configured bandwidth if bandwidth is available.

Interface transmit statistics

Status of the interface-transmit-statistics configuration: Enabled or Disabled.

Queue counters (Egress)

CoS queue number and its associated user-configured forwarding class name.

• Queued packets—Number of queued packets.

• Transmitted packets—Number of transmitted packets.

• Dropped packets—Number of packets dropped by the ASIC's RED mechanism.

Logical interface

Name of the logical interface.

Index

Index number of the logical interface, which reflects its initialization sequence.

SNMP ifIndex

SNMP interface index number for the logical interface.

Generation

Unique number for use by Juniper Networks technical support only.

Flags

Information about the logical interface.

Encapsulation

Encapsulation on the logical interface.

Traffic statistics

Number and rate of bytes and packets received and transmitted on the specified interface set.

• Input bytes, Output bytes—Number of bytes received and transmitted on the interface set. The value in this field also includes the Layer 2 overhead bytes for ingress or egress traffic on Ethernet interfaces if you enable accounting of Layer 2 overhead at the PIC level or the logical interface level.

• Input packets, Output packets—Number of packets received and transmitted on the interface set.

Local statistics

Number and rate of bytes and packets destined to the device.

Transit statistics

Number and rate of bytes and packets transiting the switch.

Security

Security zones that interface belongs to.

Flow Input statistics

Statistics on packets received by flow module.

Flow Output statistics

Statistics on packets sent by flow module.

Flow error statistics (Packets dropped due to)

Statistics on errors in the flow module.

Protocol

Protocol family.

MTU

Maximum transmission unit size on the logical interface.

Generation

Unique number for use by Juniper Networks technical support only.

Route Table

Route table in which the logical interface address is located. For example, 0 refers to the routing table inet.0.

Flags

Information about protocol family flags. .

Addresses, Flags

Information about the address flags..

Destination

IP address of the remote side of the connection.

Local

IP address of the logical interface.

Broadcast

Broadcast address of the logical interface.

Generation

Unique number for use by Juniper Networks technical support only.