Physical interface

Name of the physical interface.

All levels

Interface index

Physical interface's index number, which reflects its initialization sequence.

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Generation

Unique number for use by Juniper Networks technical support only.

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MTU

MTU size on the physical interface.

All levels

Speed

Speed at which the interface is running.

All levels

FCS

Frame check sequence on the interface (either 16 or 32). The default is 16 bits.

All levels

Framing

Physical layer framing format used on the link. It can be ESF or SF. The default is ESF.

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

Link flags

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

All levels

Keepalive settings

(PPP and HDLC) Configured settings for keepalives.

• interval seconds—The time in seconds between successive keepalive requests. The range is 10 seconds through 32,767 seconds, with a default of 10 seconds.
• down-count number—The number of keepalive packets that a destination must fail to receive before the network takes a link down. The range is 1 through 255, with a default of 3.
• up-count number—The number of keepalive packets a destination must receive to change a link’s status from down to up. The range is 1 through 255, with a default of 1.

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LMI settings

(Frame Relay) Settings for Local Management Interface (LMI) can be either ANSI LMI settings or ITU LMI settings. ANSI LMI settings is the default. The format is (ANSI or ITU) LMI settings: value, value, value...xx seconds, where value can be:

• n391dte—DTE full status polling interval (1–255)
• n392dce—DCE error threshold (1–10)
• n392dte—DTE error threshold (1–10)
• n393dce—DCE monitored event count (1–10)
• n393dte—DTE monitored event count (1–10)
• t391dte—DTE polling timer (5–30 seconds)
• t392dce—DCE polling verification timer (5–30 seconds)

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LCP state

(PPP) Link Control Protocol state.

• Conf-ack-received—Acknowledgement was received.
• Conf-ack-sent—Acknowledgement was sent.
• Conf-req-sent—Request was sent.
• Down—LCP negotiation is incomplete (not yet completed or has failed).
• Not-configured—LCP is not configured on the interface.
• Opened—LCP negotiation is successful.

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CHAP state

(PPP) Displays the state of the Challenge Handshake Authentication Protocol (CHAP) during its transaction.

• Chap-Chal-received—Challenge was received but response not yet sent.
• Chap-Chal-sent—Challenge was sent.
• Chap-Resp-received—Response was received for the challenge sent, but CHAP has not yet moved into theSuccess state. (Most likely with RADIUS authentication).
• Chap-Resp-sent—Response was sent for the challenge received.
• Closed—CHAP authentication is incomplete.
• Failure—CHAP authentication failed.
• Not-configured—CHAP is not configured on the interface.
• Success—CHAP authentication was successful.

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Statistics last cleared

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

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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 aborts 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).
• Giants—Number of frames received that are larger than the giant threshold.
• 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.
• L2 channel errors—Counter increments when the software could not find a valid logical interface for an incoming frame.
• L2 mismatch timeouts—Count of malformed or short packets that caused the incoming packet handler to discard the frame as unreadable.
• SRAM errors—Number of hardware errors that occurred in the static RAM (SRAM) on the PIC. If the value in this field increments, the PIC is malfunctioning.
• HS link CRC errors—Count of errors on the high-speed links between the ASICs responsible for handling the router interfaces.

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DS1 alarms

DS1 defects

Media-specific defects that can render the interface unable to pass 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.

• LOS—Loss of signal.
• LOF—Loss of frame.
• AIS—Alarm indication signal.
• YLW—Yellow alarm. Indicates errors at the remote site receiver.

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DS3 media

Counts of T3 media-specific errors. For detailed definitions of the T3 (DS-3) error events (BPV, EXZ, LCV, PCV, and CCV) and performance parameters (LES, PES, PSES, CES, CSES, SEFS, and UAS), see RFC 2496.

• PLL Lock—Phase-locked loop out of lock
• Reframing—Frame alignment recovery time
• AIS—Alarm indication signal
• LOF—Loss of frame
• LOS—Loss of signal
• IDLE—Idle code detected
• YELLOW—Remote defect indication
• BPV—Bipolar violation
• EXZ—Excessive zeros
• LCV—Line code violation
• PCV—Pulse code violation
• CCV—C-bit coding violation
• LES—Line error seconds
• PES—P-bit errored seconds
• PSES—P-bit errored seconds (section)
• CES—C-bit errored seconds
• CSES—C-bit severely errored seconds
• SEFS—Severely errored framing seconds
• UAS—Unavailable seconds

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Interface transmit queues

Name of the transmit queues and their associated statistics for each DS1 channel on the Channelized DS3-to-DS1 PIC.

• B/W—Queue bandwidth as a percentage of the total interface bandwidth.
• WRR—Weighted round-robin (in percent).
• Packets—Number of packets transmitted.
• Bytes—Number of bytes transmitted.
• Drops—Number of packets dropped.
• Errors—Number of packet errors.

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Packet Forwarding Engine configuration

Information about the configuration of the Packet Forwarding Engine:

• Destination slot—FPC slot number.
• PLP byte—Packet Level Protocol byte.

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Index

Logical interface index number, which reflects its initialization sequence.

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Generation

Unique number for use by Juniper Networks technical support only.

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Encapsulation

Encapsulation on the logical interface.

All levels

Protocol

Protocol family configured on the logical interface, such as iso, inet6, mpls.

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Generation

Unique number for use by Juniper Networks technical support only.

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Flags

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

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Destination

IP address of the remote side of the connection.

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Broadcast

Broadcast address.

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Redundant Link

(LSQ redundancy) Backup link for Link Services IQ redundancy.

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