Related Documentation
Monitoring ATM Interfaces
Checklist for Monitoring ATM Interfaces
Purpose
To monitor Asynchronous Transfer Mode (ATM) interfaces and begin the process of isolating ATM interface problems when they occur.
Action
Table 1 provides the links and commands for monitoring ATM interfaces.
Table 1: Checklist for Monitoring ATM Interfaces
Tasks | Command or Action |
|---|---|
| Monitoring ATM Interfaces | show interfaces terse at* |
| Monitoring ATM1 Interfaces | |
show interfaces at-fpc/pic/port | |
show interfaces at-fpc/pic/port extensive | |
monitor interface at-fpc/pic/port | |
| Monitoring ATM2 IQ Interfaces | |
show interfaces terse at-fpc/pic/port | |
show interfaces at-fpc/pic/port extensive | |
monitor interface at-fpc/pic/port | |
| Monitoring ATM MIC Interfaces | |
show interfaces terse at-fpc/pic/port | |
show interfaces at-fpc/pic/port extensive | |
monitor interface at-fpc/pic/port |
Monitoring ATM Interfaces
Purpose
By monitoring ATM interfaces, you begin the process of isolating ATM interface problems when they occur. The following command provides the status of all ATM interfaces on the router. SeeChecklist for Determining ATM Interface Type for information on how to determine the ATM interface type.
Action
To display the status of all ATM interfaces, use the following Junos OS command-line interface (CLI) operational mode command:
Sample Output
The following sample output is for an ATM1 interface:
user@host> show interfaces terse at* Interface Admin Link Proto Local Remote at-2/0/0 up up at-2/2/0.100 up up inet 10.16.5.1/24 at-2/2/0.101 up up inet 10.16.250.253/30 at-2/2/0.200 up up inet 20.20.20.1/30 at-2/2/0.300 up up inet 30.30.30.1/30 at-2/2/0.400 up up inet 40.40.40.1/30 at-2/2/0.32767 up up at-2/0/1 up down at-2/0/1.10 up down inet 10.10.100.1/30
Meaning
The sample output lists only the ATM interfaces and shows the status of both the physical and logical interfaces. See Table 2 for a description of what the output means. You cannot determine from this output whether the interfaces are ATM1 or ATM2 intelligent queuing (IQ). SeeChecklist for Determining ATM Interface Type for information on how to determine the ATM interface type.
Table 2: Status of ATM Interfaces
Physical Interface | Logical Interface | Status Description |
|---|---|---|
at-2/0/0 Admin Up Link Up | at-2/0/0.100 Admin Up Link Up | Both the physical and logical links are up and running on this interface. By default on an ATM interface, if the physical link is up, the logical link is also up. However, for ATM 1 or ATM2 IQ interfaces with an ATM encapsulation and OAM configured for the VC, even if the physical interface is up, the logical link for a VC can be down due to a VC misconfiguration. |
at-2/0/1 Admin Up Link Down | at-2/0/1.10 Admin Up Link Down | The physical link is down on this interface and therefore the logical interface is down also. |
Monitoring ATM1 Interfaces
To monitor an ATM1 interface, follow these steps:
- Displaying the Status of a Specific ATM1 Interface
- Displaying Extensive Status Information for a Specific ATM1 Interface
- Monitoring Statistics for an ATM1 Interface
Displaying the Status of a Specific ATM1 Interface
Purpose
To display the status of a specific ATM interface, use the following Junos OS CLI operational mode command:
Action
Meaning
The first line of the sample output shows that the physical link is down and therefore the logical link is down also. This means that the interface cannot pass packets.
Further down the sample output, look for active alarms and defects. If there are any, and to further diagnose the problem, see Displaying Extensive Status Information for a Specific ATM1 Interface to display more extensive information about the ATM interface and the physical interface that is down.
Displaying Extensive Status Information for a Specific ATM1 Interface
Purpose
To display extensive status information about a specific interface, use the following Junos OS CLI operational mode command:
Action
Sample Output
user@host> show interfaces at-2/0/1 extensive Physical interface: at-2/0/1, Enabled, Physical link is Down
Interface index: 23, SNMP ifIndex: 43, Generation: 22
Link-level type: ATM-PVC, MTU: 4482, Clocking: Internal, SONET mode, Speed: OC3 , Loopback: None, Payload scrambler: Enabled
Device flags : Present Running Down
Link flags : None
Hold-times : Up 0 ms, Down 0 ms
Statistics last cleared: 2002-07-29 14:28:14 EDT (00:18:00 ago)
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Input errors:
Errors: 0, Drops: 0, Invalid VCs: 0, Framing errors: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0,
L2 mismatch timeouts: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Aged packets: 0
SONET alarms : LOL, LOS
SONET defects : LOL, LOF, LOS, SEF, AIS-L, AIS-P, RDI-P, PLM-P
SONET PHY: Seconds Count State
PLL Lock 0 0 OK
PHY Light 1079 0 Light Missing
SONET section:
BIP-B1 0 0
SEF 1079 0 Defect Active
LOS 1079 0 Defect Active
LOF 1079 0 Defect Active
ES-S 1079
SES-S 1079
SEFS-S 1079
SONET line:
BIP-B2 0 0
REI-L 0 0
RDI-L 0 0 OK
AIS-L 1079 0 Defect Active
BERR-SF 0 0 OK
BERR-SD 0 0 OK
ES-L 1079
SES-L 1079
UAS-L 1079
ES-LFE 0
SES-LFE 0
UAS-LFE 0
SONET path:
BIP-B3 0 0
REI-P 0 0
LOP-P 0 0 OK
AIS-P 1079 0 Defect Active
RDI-P 1079 0 Defect Active
UNEQ-P 0 0 OK
PLM-P 1079 0 Defect Active
ES-P 1079
SES-P 1079
UAS-P 1079
ES-PFE 1079
SES-PFE 1079
UAS-PFE 1079
Received SONET overhead:
F1 : 0x00, J0 : 0x00, K1 : 0xff, K2 : 0xff
S1 : 0x00, C2 : 0xff, C2(cmp) : 0x13, F2 : 0x00
Z3 : 0x00, Z4 : 0x00, S1(cmp) : 0x00, V5 : 0x00
V5(cmp) : 0x00
Transmitted SONET overhead:
F1 : 0x00, J0 : 0x01, K1 : 0x00, K2 : 0x00
S1 : 0x00, C2 : 0x13, F2 : 0x00, Z3 : 0x00
Z4 : 0x00, V5 : 0x00
ATM status:
HCS state: Hunt
LOC : OK
ATM Statistics:
Uncorrectable HCS errors: 0, Correctable HCS errors: 0, Tx cell FIFO overruns: 0, Rx cell FIFO overruns: 0,
Rx cell FIFO underruns: 0, Input cell count: 0, Output cell count: 381110991, Output idle cell count: 18446744069795695321,
Output VC queue drops: 0, Input no buffers: 0, Input length errors: 0, Input timeouts: 0, Input invalid VCs: 0,
Input bad CRCs: 0, Input OAM cell no buffers: 0
PFE configuration:
Destination slot: 2
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % bytes
0 best-effort 0 0 0 0 low none
1 expedited-forwarding 0 0 0 0 low none
2 assured-forwarding 0 0 0 0 low none
3 network-control 0 0 0 0 low none
Logical interface at-2/0/1.10 (Index 30) (SNMP ifIndex 65) (Generation 29)
Flags: Device-Down Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 4470, Flags: None, Generation: 32 Route table: 0
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 192.168.100.0/30, Local: 192.168.100.1, Broadcast: Unspecified, Generation: 61
VCI 2.100
Flags: Active
Total down time: 0 sec, Last down: Never
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets:
Meaning
The sample output is for an OC3 ATM interface and shows the statistics for the SONET media, as well as the Input and Output ATM errors. Error details include input and output errors, active alarms and defects, and media-specific errors.
If the physical link is down, look at the active alarms and defects for the ATM interface and check the ATM media accordingly. SeeList of Common ATM Alarms and Error for an explanation of ATM alarms.
Monitoring Statistics for an ATM1 Interface
Purpose
To monitor statistics for an ATM1 interface, use the following Junos OS CLI operational mode command:
Action
 | Caution: We recommend that you use this command only for diagnostic purposes. Do not leave it on during normal router operations because real-time monitoring of traffic consumes additional CPU and memory resources. |
Sample Output
user@host> monitor interface at-2/0/0host Seconds: 68 Time: 13:52:33
Delay: 0/0/2
Interface: at-2/0/0, Enabled, Link is Up
Encapsulation: ATM-PVC, Speed: OC3
Traffic statistics: Current delta
Input bytes: 1528168 (2142968 bps) [1528000]
Output bytes: 1540192 (2165880 bps) [1540000]
Input packets: 1002 (175 pps) [1000]
Output packets: 1002 (175 pps) [1000]
Error statistics:
Input errors: 0 [0]
Input drops: 0 [0]
Input framing errors: 0 [0]
Policed discards: 0 [0]
L3 incompletes: 0 [0]
L2 channel errors: 0 [0]
L2 mismatch timeouts: 0 [0]
Carrier transitions: 0 [0]
Output errors: 0 [0]
Output drops: 0 [0]
Aged packets: 0 [0]
ATM statistics:
Input cell count 33049 [33034]
Input invalid vc 0 [0]
Output cell count 89231368868 [23664462]
Output idle cell count 18446744072746574220 [23631438]
Active alarms : None
Active defects: None
SONET error counts/seconds:
LOS count 0 [0]
LOF count 0 [0]
SEF count 0 [0]
ES-S 0 [0]
SES-S 0 [0]
SONET statistics:
BIP-B1 0 [0]
BIP-B2 0 [0]
REI-L 0 [0]
BIP-B3 0 [0]
REI-P 0 [0]
Received SONET overhead: F1 : 0x00 J0 : 0x00Z
Next='n', Quit='q' or ESC, Freeze='f', Thaw='t', Clear='c', Interface='i'
Meaning
The sample output checks for and displays common interface failures and any increases in framing errors. Information from this command can help you narrow down possible causes of an interface problem.
 | Note: If you are accessing the router from the console connection, make sure you set the CLI terminal type using the set cli terminal command. |
Monitoring ATM2 IQ Interfaces
To monitor an ATM2 interface, follow these steps:
- Displaying the Status of a Specific ATM2 IQ Interface
- Displaying Extensive Information for a Specific ATM2 Interface
- Monitoring Statistics for an ATM2 Interface
Displaying the Status of a Specific ATM2 IQ Interface
Purpose
To display the status of a specific ATM2 IQ interface, use the following Junos OS CLI operational mode commands:
Action
Sample Output 1
user@host> show interfaces terse at-2/2/0 Interface Admin Link Proto Local Remote at-2/2/0 up up at-2/2/0.100 up up inet 10.16.5.1/24 at-2/2/0.101 up up inet 10.16.250.253/30 at-2/2/0.200 up up inet 20.20.20.1/30 at-2/2/0.300 up up inet 30.30.30.1/30 at-2/2/0.400 up up inet 40.40.40.1/30 at-2/2/0.32767 up up
Sample Output 2
user@host> show interfaces at-2/2/0 Physical interface: at-2/2/0, Enabled, Physical link is Up
Interface index: 138, SNMP ifIndex: 26
Link-level type: ATM-PVC, MTU: 4482, Clocking: Internal, SONET mode, Speed: OC12, Loopback: None,
Payload scrambler: Enabled
Device flags : Present Running
Link flags : None
CoS queues : 4 supported
Current address: 00:90:69:d6:d5:3a
Last flapped : 2004-05-03 14:32:52 UTC (02:41:35 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
SONET alarms : None
SONET defects : None
VPI 1
Flags: Active
Total down time: 0 sec, Last down: Never
Traffic statistics:
Input packets: 0
Output packets: 18
Logical interface at-2/2/0.100 (Index 67) (SNMP ifIndex 36)
Flags: Point-To-Multipoint SNMP-Traps Encapsulation: Ether-over-ATM-LLC
Input packets : 0
Output packets: 7
Protocol inet, MTU: 1500
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 172.16.5/24, Local: 172.16.5.1, Broadcast: 172.16.5.255
VCI 1.100
Flags: Active, Shaping, Multicast
VBR, Peak: 66kbps, Sustained: 66kbps, Burst size: 40
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
Input packets : 0
Output packets: 14
Logical interface at-2/2/0.101 (Index 68) (SNMP ifIndex 37)
Flags: Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Input packets : 0
Output packets: 2
Protocol inet, MTU: 4470
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 172.16.250.252/30, Local: 172.16.250.253, Broadcast: 172.16.250.255
VCI 1.101
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
Input packets : 0
Output packets: 2
Logical interface at-2/2/0.200 (Index 69) (SNMP ifIndex 8280)
Flags: Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Input packets : 0
Output packets: 0
Protocol inet, MTU: 4470
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 20.20.20.0/30, Local: 20.20.20.1, Broadcast: 20.20.20.3
VCI 1.200
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
Input packets : 0
Output packets: 0
Logical interface at-2/2/0.300 (Index 70) (SNMP ifIndex 8281)
Flags: Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Input packets : 0
Output packets: 0
Protocol inet, MTU: 4470
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 30.30.30.0/30, Local: 30.30.30.1, Broadcast: 30.30.30.3
VCI 1.300
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
Input packets : 0
Output packets: 0
Logical interface at-2/2/0.400 (Index 72) (SNMP ifIndex 8282)
Flags: Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Input packets : 0
Output packets: 0
Protocol inet, MTU: 4470
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 40.40.40.0/30, Local: 40.40.40.1, Broadcast: 40.40.40.3
VCI 1.400
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
Input packets : 0
Output packets: 0
Logical interface at-2/2/0.32767 (Index 71) (SNMP ifIndex 27)
Flags: Point-To-Multipoint No-Multicast SNMP-Traps Encapsulation: ATM-VCMUX
Input packets : 0
Output packets: 0
VCI 1.4
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
Input packets : 0
Output packets: 0
Meaning
The first line of the sample output shows that the physical link and all logical links are up. This means that the interface can pass packets.
Further down the sample output, look for active alarms and defects. If there are any, and to further diagnose the problem, see Displaying Extensive Information for a Specific ATM2 Interface to display more extensive information about the ATM interface and the physical interface that is down.
Displaying Extensive Information for a Specific ATM2 Interface
Purpose
To display extensive status information about a specific ATM2 interface, use the following Junos OS CLI operational mode command:
Action
Sample Output
user@host> show interfaces at-2/2/0 extensive Physical interface: at-2/2/0, Enabled, Physical link is Up
Interface index: 138, SNMP ifIndex: 26, Generation: 21
Link-level type: ATM-PVC, MTU: 4482, Clocking: Internal, SONET mode, Speed: OC12, Loopback: None,
Payload scrambler: Enabled
Device flags : Present Running
Link flags : None
CoS queues : 4 supported
Hold-times : Up 0 ms, Down 0 ms
Current address: 00:90:69:d6:d5:3a
Last flapped : 2004-05-03 14:32:52 UTC (02:42:30 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 1600 0 bps
Input packets: 0 0 pps
Output packets: 18 0 pps
Input errors:
Errors: 0, Drops: 0, Invalid VCs: 0, Framing errors: 0, Policed discards: 0, L3 incompletes: 0,
L2 channel errors: 0, L2 mismatch timeouts: 0
Output errors:
Carrier transitions: 1, Errors: 0, Drops: 0, Aged packets: 0
Queue counters: Queued packets Transmitted packets Dropped packets
0 assured-forw 18 18 0
1 expedited-fo 0 0 0
2 best-effort 0 0 0
3 network-cont 0 0 0
SONET alarms : None
SONET defects : None
SONET PHY: Seconds Count State
PLL Lock 0 0 OK
PHY Light 0 0 OK
SONET section:
BIP-B1 1 13
SEF 0 0 OK
LOS 0 0 OK
LOF 0 0 OK
ES-S 1
SES-S 0
SEFS-S 0
SONET line:
BIP-B2 1 196
REI-L 1 291
RDI-L 0 0 OK
AIS-L 0 0 OK
BERR-SF 0 0 OK
BERR-SD 0 0 OK
ES-L 1
SES-L 0
UAS-L 0
ES-LFE 1
SES-LFE 0
UAS-LFE 0
SONET path:
BIP-B3 1 36
REI-P 1 211
LOP-P 0 0 OK
AIS-P 0 0 OK
RDI-P 0 0 OK
UNEQ-P 0 0 OK
PLM-P 0 0 OK
ES-P 1
SES-P 0
UAS-P 0
ES-PFE 1
SES-PFE 0
UAS-PFE 0
Received SONET overhead:
F1 : 0x00, J0 : 0x00, K1 : 0x00, K2 : 0x00
S1 : 0x00, C2 : 0x13, C2(cmp) : 0x13, F2 : 0x00
Z3 : 0x00, Z4 : 0x00, S1(cmp) : 0x00
Transmitted SONET overhead:
F1 : 0x00, J0 : 0x01, K1 : 0x00, K2 : 0x00
S1 : 0x00, C2 : 0x13, F2 : 0x00, Z3 : 0x00
Z4 : 0x00
ATM status:
HCS state: Sync
LOC : OK
ATM Statistics:
Uncorrectable HCS errors: 177, Correctable HCS errors: 3, Tx cell FIFO overruns: 0,
Rx cell FIFO overruns: 0, Rx cell FIFO underruns: 0, Input cell count: 4,
Output cell count: 13785683517, Output idle cell count: 0, Output VC queue drops: 0,
Input no buffers: 0, Input length errors: 0, Input timeouts: 0, Input invalid VCs: 2,
Input bad CRCs: 0, Input OAM cell no buffers: 0
Packet Forwarding Engine configuration:
Destination slot: 2
VPI 1
Flags: Active
Total down time: 0 sec, Last down: Never
Traffic statistics:
Input bytes : 0
Output bytes : 1600
Input packets: 0
Output packets: 18
Logical interface at-2/2/0.100 (Index 67) (SNMP ifIndex 36) (Generation 11)
Flags: Point-To-Multipoint SNMP-Traps Encapsulation: Ether-over-ATM-LLC
Traffic statistics:
Input bytes : 0
Output bytes : 896
Input packets: 0
Output packets: 7
Local statistics:
Input bytes : 0
Output bytes : 896
Input packets: 0
Output packets: 7
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 1500, Generation: 17, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 172.16.5/24, Local: 172.16.5.1, Broadcast: 172.16.5.255, Generation: 16
VCI 1.100
Flags: Active, Shaping, Multicast
VBR, Peak: 66kbps, Sustained: 66kbps, Burst size: 40
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 1512
Input packets: 0
Output packets: 14
Logical interface at-2/2/0.101 (Index 68) (SNMP ifIndex 37) (Generation 12)
Flags: Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Traffic statistics:
Input bytes : 0
Output bytes : 200
Input packets: 0
Output packets: 2
Local statistics:
Input bytes : 0
Output bytes : 200
Input packets: 0
Output packets: 2
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 4470, Generation: 18, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 172.16.250.252/30, Local: 172.16.250.253, Broadcast: 172.16.250.255,
Generation: 18
VCI 1.101
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 184
Input packets: 0
Output packets: 2
Logical interface at-2/2/0.200 (Index 69) (SNMP ifIndex 8280) (Generation 13)
Flags: Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 4470, Generation: 19, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 20.20.20.0/30, Local: 20.20.20.1, Broadcast: 20.20.20.3, Generation: 20
VCI 1.200
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Logical interface at-2/2/0.300 (Index 70) (SNMP ifIndex 8281) (Generation 14)
Flags: Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 4470, Generation: 20, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 30.30.30.0/30, Local: 30.30.30.1, Broadcast: 30.30.30.3, Generation: 22
VCI 1.300
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Logical interface at-2/2/0.400 (Index 72) (SNMP ifIndex 8282) (Generation 15)
Flags: Point-To-Point SNMP-Traps Encapsulation: ATM-SNAP
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 4470, Generation: 21, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 40.40.40.0/30, Local: 40.40.40.1, Broadcast: 40.40.40.3, Generation: 24
VCI 1.400
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Logical interface at-2/2/0.32767 (Index 71) (SNMP ifIndex 27) (Generation 9)
Flags: Point-To-Multipoint No-Multicast SNMP-Traps Encapsulation: ATM-VCMUX
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
VCI 1.4
Flags: Active
Total down time: 0 sec, Last down: Never
EPD threshold: 0, Transmit weight cells: 0
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Meaning
The sample output is for an OC12 ATM interface and shows the statistics for the SONET media, as well as the Input and Output ATM errors. Error details include input and output errors, active alarms and defects, and media-specific errors.
If the physical link is down, look at the active alarms and defects for the ATM interface and check the ATM media accordingly. SeeList of Common ATM Alarms and Error for an explanation of ATM alarms.
Monitoring Statistics for an ATM2 Interface
Purpose
To monitor statistics for an ATM2 interface, use the following Junos OS CLI operational mode command:
Action
| Caution: We recommend that you use this command only for diagnostic purposes. Do not leave it on during normal router operations because real-time monitoring of traffic consumes additional CPU and memory resources. |
Sample Output
user@host> monitor interface at-2/2/0host Seconds: 5 Time: 17:16:49
Delay: 3/0/3
Interface: at-2/2/0, Enabled, Link is Up
Encapsulation: ATM-PVC, Speed: OC12
Traffic statistics: Current delta
Input bytes: 0 (0 bps) [0]
Output bytes: 1600 (0 bps) [0]
Input packets: 0 (0 pps) [0]
Output packets: 18 (0 pps) [0]
Error statistics:
Input errors: 0 [0]
Input drops: 0 [0]
Input framing errors: 0 [0]
Policed discards: 0 [0]
L3 incompletes: 0 [0]
L2 channel errors: 0 [0]
L2 mismatch timeouts: 0 [0]
Carrier transitions: 1 [0]
Output errors: 0 [0]
Output drops: 0 [0]
Aged packets: 0 [0]
ATM statistics:
Input cell count 4 [0]
Input invalid vc 2 [0]
Output cell count 13908633088 [8484369]
Output idle cell count 0 [0]
Active alarms : NoneActive defects: NoneSONET error countsZ [0]
Meaning
The sample output checks for and displays common interface failures and any increases in framing errors. Information from this command can help you narrow down possible causes of an interface problem.
| Note: If you are accessing the router from the console connection, make sure you set the CLI terminal type using the set cli terminal command. |
Monitoring ATM MIC Interfaces
To monitor the status of ATM MIC interfaces, perform the following tasks:
- Displaying the Status of a Specific ATM MIC Interface
- Displaying Extensive Information for a Specific ATM MIC Interface
- Monitoring Traffic and Error Statistics for an ATM MIC Interface
Displaying the Status of a Specific ATM MIC Interface
Purpose
Display the status of a specific ATM MIC interface.
Action
To display the summary information about a specific ATM MIC interface:
Interface Admin Link Proto Local Remote at-2/2/0 up up at-2/2/0.100 up up inet 10.10.10.1 --> 10.10.20.1 at-2/2/0.32767 up up
To display the status of a specific ATM MIC interface:
Sample Output
Physical interface: at-2/2/0, Enabled, Physical link is Up
Interface index: 146, SNMP ifIndex: 510
Link-level type: ATM-PVC, MTU: 2048, Clocking: Internal, SONET mode,
Speed: OC3, Loopback: None, Payload scrambler: Enabled
Device flags : Present Running
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Schedulers : 0
Current address: 00:26:88:da:a6:74
Last flapped : 2012-03-07 11:02:11 PST (5w4d 15:45 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
SONET alarms : None
SONET defects : None
VPI 7
Flags: Active
Total down time: 0 sec, Last down: Never
Traffic statistics:
Input packets: 0
Output packets: 0
Logical interface at-2/2/0.100 (Index 347) (SNMP ifIndex 518)
Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: ATM-VCMUX
Input packets : 0
Output packets: 0
Protocol inet, MTU: 2040
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.10.20.1, Local: 10.10.10.1
VCI 7.100
Flags: Active
Total down time: 0 sec, Last down: Never
Input packets : 0
Output packets: 0
Logical interface at-2/2/0.32767 (Index 348) (SNMP ifIndex 519)
Flags: Point-To-Multipoint No-Multicast SNMP-Traps 0x4000
Encapsulation: ATM-VCMUX
Input packets : 0
Output packets: 0
VCI 7.4
Flags: Active
Total down time: 0 sec, Last down: Never
Input packets : 0
Output packets: 0 Meaning
The first line of the sample output shows that the physical link and all logical links are up. This means that the interface can pass packets.
Further down the sample output, look for active alarms and defects. If there are any, and to further diagnose the problem, see Displaying Extensive Information for a Specific ATM MIC Interface to display more extensive information about the ATM interface and the physical interface that is down.
Table 3 lists the show interfaces terse command output fields.
Table 3: show interfaces terse Output Fields
Field Name | Field Description |
|---|---|
Interface | Interface name. |
Admin | The administrative status of the interface. Possible values: up or down. |
Link | Status of the link. Possible values: up or down. |
Proto | Protocol family configured on the logical interface. |
Local | Local IP address of the logical interface. |
Remote | Remote IP address of the logical interface. |
For information about the output fields of the show interfaces command, see show interfaces (ATM).
Displaying Extensive Information for a Specific ATM MIC Interface
Purpose
Display extensive information for a specific ATM MIC interface.
Action
To display extensive status information about a specific ATM MIC interface:
Physical interface: at-2/2/0, Enabled, Physical link is Up
Interface index: 146, SNMP ifIndex: 510, Generation: 421
Link-level type: ATM-PVC, MTU: 2048, Clocking: Internal, SONET mode,
Speed: OC3, Loopback: None, Payload scrambler: Enabled
Device flags : Present Running
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Schedulers : 0
Hold-times : Up 0 ms, Down 0 ms
Current address: 00:26:88:da:a6:74
Last flapped : 2012-03-07 11:02:11 PST (5w4d 15:58 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Input errors:
Errors: 0, Drops: 0, Invalid VCs: 0, Framing errors: 0, Policed discards: 0,
L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0,
Resource errors: 0
Output errors:
Carrier transitions: 1, Errors: 0, Drops: 0, Aged packets: 0, MTU errors: 0,
Resource errors: 0
Egress queues: 8 supported, 4 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 0 0 0
1 expedited-fo 0 0 0
2 assured-forw 0 0 0
3 network-cont 0 0 0
Queue number: Mapped forwarding classes
0 best-effort
1 expedited-forwarding
2 assured-forwarding
3 network-control
SONET alarms : None
SONET defects : None
SONET PHY: Seconds Count State
PLL Lock 0 0 OK
PHY Light 0 0 OK
SONET section:
BIP-B1 1 29
SEF 0 0 OK
LOS 0 0 OK
LOF 0 0 OK
ES-S 1
SES-S 0
SEFS-S 0
SONET line:
BIP-B2 1 75
REI-L 1 36
RDI-L 0 0 OK
AIS-L 0 0 OK
BERR-SF 0 0 OK
BERR-SD 0 0 OK
ES-L 1
SES-L 0
UAS-L 0
ES-LFE 1
SES-LFE 0
UAS-LFE 0
SONET path:
BIP-B3 1 23
REI-P 1 34
LOP-P 0 0 OK
AIS-P 0 0 OK
RDI-P 0 0 OK
UNEQ-P 0 0 OK
PLM-P 0 0 OK
ES-P 1
SES-P 0
UAS-P 0
ES-PFE 1
SES-PFE 0
UAS-PFE 0
Payload pointer:
Current pointer : 0
Pointer increment count : 0
Pointer decrement count : 0
New pointer NDF count : 1
Received SONET overhead:
F1 : 0x00, J0 : 0x00, K1 : 0x00, K2 : 0x00
S1 : 0x00, C2 : 0x13, C2(cmp) : 0x13, F2 : 0x00
Z3 : 0x00, Z4 : 0x00, S1(cmp) : 0x00
Transmitted SONET overhead:
F1 : 0x00, J0 : 0x01, K1 : 0x00, K2 : 0x00
S1 : 0x00, C2 : 0x13, F2 : 0x00, Z3 : 0x00
Z4 : 0x00
ATM status:
HCS state: Sync
LOC : OK
ATM Statistics:
Uncorrectable HCS errors: 7, Correctable HCS errors: 0,
Tx cell FIFO overruns: 0, Rx cell FIFO overruns: 0,
Rx cell FIFO underruns: 0, Input cell count: 0, Output cell count: 0,
Output idle cell count: 1210483921034, Output VC queue drops: 0,
Input no buffers: 0, Input length errors: 0, Input timeouts: 0,
Input invalid VCs: 0, Input bad CRCs: 0, Input OAM cell no buffers: 0
Packet Forwarding Engine configuration:
Destination slot: 2
VPI 7
Flags: Active
Total down time: 0 sec, Last down: Never
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Logical interface at-2/2/0.100 (Index 347) (SNMP ifIndex 518)
(Generation 660)
Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: ATM-VCMUX
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 2040, Generation: 457, Route table: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.10.20.1, Local: 10.10.10.1, Broadcast: Unspecified,
Generation: 621
VCI 7.100
Flags: Active
Total down time: 0 sec, Last down: Never
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Logical interface at-2/2/0.32767 (Index 348) (SNMP ifIndex 519)
(Generation 661)
Flags: Point-To-Multipoint No-Multicast SNMP-Traps 0x4000
Encapsulation: ATM-VCMUX
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
VCI 7.4
Flags: Active
Total down time: 0 sec, Last down: Never
ATM per-VC transmit statistics:
Tail queue packet drops: 0
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Meaning
The sample output is for an OC3 ATM interface and shows the statistics for the SONET media, as well as the Input and Output ATM errors. Error details include input and output errors, active alarms and defects, and media-specific errors.
If the physical link is down, look at the active alarms and defects for the ATM interface and check the ATM media accordingly. See List of Common ATM Alarms and Error for an explanation of ATM alarms.
For information about the output fields of the show interfaces extensive command, see show interfaces (ATM).
Monitoring Traffic and Error Statistics for an ATM MIC Interface
Purpose
Monitor traffic and error statistics for an ATM MIC interface.
Action
To display real-time statistics, updated every second, for an ATM MIC interface:
| Caution: We recommend that you use this command only for diagnostic purposes. If you use this command during normal router operations, additional CPU and memory resources are consumed. |
host Seconds: 5 Time: 04:02:22
Delay: 0/0/3
Interface: at-2/2/0, Enabled, Link is Up
Encapsulation: ATM-PVC, Speed: OC3
Traffic statistics:
Input bytes: 0 (0 bps)
Output bytes: 0 (0 bps)
Input packets: 0 (0 pps)
Output packets: 0 (0 pps)
Error statistics:
Input errors: 0
Input drops: 0
Input framing errors: 0
Policed discards: 0
L3 incompletes: 0
L2 channel errors: 0
L2 mismatch timeouts: 0 Carrier transitiZ
host Seconds: 5 Time: 04:02:22
Delay: 1/1/1
Interface: at-2/2/1, Enabled, Link is Up
Encapsulation: ATM-PVC, Speed: OC3
Traffic statistics: Current delta
Input bytes: 0 (0 bps) [0]
Output bytes: 0 (0 bps) [0]
Input packets: 0 (0 pps) [0]
Output packets: 0 (0 pps) [0]
Error statistics:
Input errors: 0 [0]
Input drops: 0 [0]
Input framing errors: 0 [0]
Policed discards: 0 [0]
L3 incompletes: 0 [0]
L2 channel errors: 0 [0]
L2 mismatch timeouts: 0 Carrier transitiZ [0]
Meaning
The sample output displays common interface failures and any increase in framing errors. Information from this command can help you narrow down possible causes of an interface problem.
| Note: If you are accessing the router from the console connection, make sure you set the CLI terminal type using the set cli terminal command. |
For information about the output fields of the monitor interfaces (ATM) command, see monitor interface.
