Step 7: Check for Interface Error Statistics

Purpose

Persistent interface error statistics indicate that you need to open a case with JTAC.

Action

To check the local interface for error statistics, use the following JUNOS CLI operational mode command:

user@host> show interfaces (ds-fpc/pic/port:channel:channel | 
t1-fpc/pic/port:channel) extensive

Sample Output

The following sample output is for a channelized DS-3 to DS-0 interface:

user@host> show interfaces ds-2/1/0:5:1 extensive    

Physical interface: ds-2/1/0:5:1, Enabled, Physical link is Up

  Interface index: 36, SNMP ifIndex: 133, Generation: 35

  Description: Customer

  Link-level type: Cisco-HDLC, MTU: 1504, Clocking: Internal, Speed: 64kbps, 
FCS: 16, Mode: M23,

  Framing: ESF

  Device flags   : Present Running

  Interface flags: Point-To-Point SNMP-Traps

  Link flags     : Keepalives

  Hold-times     : Up 0 ms, Down 0 ms

  Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3

  Keepalive statistics:

    Input : 2 (last seen 00:00:05 ago)

    Output: 2 (last sent 00:00:05 ago)

  Statistics last cleared: 2002-08-01 10:14:45 UTC (00:00:16 ago)

  Traffic statistics:

   Input  bytes  :                  524                  304 bps

   Output bytes  :                  528                  304 bps

   Input  packets:                    8                    0 pps

   Output packets:                    8                    0 pps

  Input errors:

    Errors: 0, Drops: 0, Framing errors: 0, Policed discards: 10, L3 
incompletes: 0,

    L2 channel errors: 0, L2 mismatch timeouts: 0, HS link CRC errors: 0

  Output errors:

    Carrier transitions: 0, Errors: 0, Drops: 0, Aged packets: 0

  DS1   alarms   : None

  DS3   alarms   : None

  DS1   defects  : None

  DS3   defects  : None

  T1  media:            Seconds        Count  State

    SEF                       0            0  OK

    BEE                       0            0  OK

    AIS                       0            0  OK

    LOF                       0            0  OK

    LOS                       0            0  OK

    YELLOW                    0            0  OK

    BPV                       0            0

    EXZ                       0            0

    LCV                       0            0

    PCV                       0            0

    CS                        0            0

    LES                       0

    ES                        0

    SES                       0

    SEFS                      0

    BES                       0

    UAS                       0

  DS3 media:            Seconds        Count  State

    PLL Lock                  0            0  OK

    Reframing                 0            0  OK

    AIS                       0            0  OK

    LOF                       0            0  OK

    LOS                       0            0  OK

    IDLE                      0            0  OK

    YELLOW                    0            0  OK

    BPV                       0            0

    EXZ                       0            0

    LCV                       0            0

    PCV                       0            0

    LES                       0

    PES                       0

    PSES                      0

    SEFS                      0

    UAS                       0

  Interface transmit queues:

              B/W  WRR       Packets        Bytes        Drops       Errors

    Queue0     95   95             4          336            0            0

    Queue1      5    5             1           22            0            0

  HDLC configuration:

    Giant threshold: 1514, Runt threshold: 3

    Timeslots      : 1

    Byte encoding: Nx64K, Data inversion: Disabled

  DS3 BERT configuration:

    BERT time period: 0 seconds, Elapsed: 0 seconds

    Algorithm: Unknown (0), Induced Error rate: 10e-0

  DS1 BERT configuration:

    BERT time period: 0 seconds, Elapsed: 0 seconds

    Induced Error rate: 10e-0, Algorithm: 2^15 - 1, O.151, Pseudorandom (9)

  PFE configuration:

    Destination slot: 2, PLP byte: 2 (0x2f)

    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 ds-2/1/0:5:1.0 (Index 14) (SNMP ifIndex 134) (Generation 13)

    Flags: Point-To-Point SNMP-Traps Encapsulation: Cisco-HDLC

    Protocol inet, MTU: 1500, Flags: None, Generation: 20 Route table: 0

      Addresses, Flags: Is-Preferred Is-Primary

        Destination: 192.168.140.196/30, Local: 192.168.140.197, Broadcast: 
Unspecified,

        Generation: 22

The following sample output is for a channelized DS-3 to DS-1 interface:

user@host> show interfaces t1-2/1/0:19 extensive 

Physical interface: t1-2/1/0:19, Enabled, Physical link is Up

  Interface index: 50, SNMP ifIndex: 59, Generation: 49

  Description: Customer

  Link-level type: Cisco-HDLC, MTU: 1504, Clocking: Internal, Speed: T1, 
Loopback: None, FCS: 16,

  Mode: M23, Framing: ESF

  Device flags   : Present Running

  Interface flags: Point-To-Point SNMP-Traps

  Link flags     : Keepalives

  Hold-times     : Up 0 ms, Down 0 ms

  Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3

  Keepalive statistics:

    Input : 117 (last seen 00:00:08 ago)

    Output: 121 (last sent 00:00:01 ago)

  Statistics last cleared: 2002-08-01 10:14:45 UTC (00:19:38 ago)

  Traffic statistics:

   Input  bytes  :             22459734               236888 bps

   Output bytes  :            162288645              1322208 bps

   Input  packets:               201233                  214 pps

   Output packets:               236341                  227 pps

  Input errors:

    Errors: 0, Drops: 0, Framing errors: 0, Policed discards: 377, L3 
incompletes: 0,

    L2 channel errors: 0, L2 mismatch timeouts: 0, HS link CRC errors: 0, SRAM 
errors: 0

  Output errors:

    Carrier transitions: 0, Errors: 0, Drops: 0, Aged packets: 0

  DS1   alarms   : None

  DS3   alarms   : None

  DS1   defects  : None

  DS3   defects  : None

  T1  media:            Seconds        Count  State

    SEF                       0            0  OK

    BEE                       0            0  OK

    AIS                       0            0  OK

    LOF                       0            0  OK

    LOS                       0            0  OK

    YELLOW                    0            0  OK

    BPV                       0            0

    EXZ                       0            0

    LCV                       0            0

    PCV                       0            0

    CS                        0            0

    LES                       0

    ES                        0

    SES                       0

    SEFS                      0

    BES                       0

    UAS                       0

  DS3 media:            Seconds        Count  State

    PLL Lock                  0            0  OK

    Reframing                 0            0  OK

    AIS                       0            0  OK

    LOF                       0            0  OK

    LOS                       0            0  OK

    IDLE                      0            0  OK

    YELLOW                    0            0  OK

    BPV                       0            0

    EXZ                       0            0

    LCV                       0            0

    PCV                       0            0

    LES                       0

    PES                       0

    PSES                      0

    SEFS                      0

    UAS                       0

  Interface transmit queues:

              B/W  WRR       Packets        Bytes        Drops       Errors

    Queue0     95   95        234494    162020375            0            0

    Queue1      5    5           164         5808            0            0

  HDLC configuration:

    Giant threshold: 1514, Runt threshold: 3

    Timeslots      : All active

    Line encoding: B8ZS, Byte encoding: Nx64K, Data inversion: Disabled

  DS3 BERT configuration:

    BERT time period: 0 seconds, Elapsed: 0 seconds

    Algorithm: Unknown (0), Induced Error rate: 10e-0

  DS1 BERT configuration:

    BERT time period: 10 seconds, Elapsed: 0 seconds

    Induced Error rate: 10e-0, Algorithm: 2^15 - 1, O.151, Pseudorandom (9)

  PFE configuration:

    Destination slot: 2, PLP byte: 2 (0xab)

    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 t1-2/1/0:19.0 (Index 27) (SNMP ifIndex 125) (Generation 26)

    Flags: Point-To-Point SNMP-Traps Encapsulation: Cisco-HDLC

    Protocol inet, MTU: 1500, Flags: None, Generation: 34 Route table: 0

      Addresses, Flags: Is-Preferred Is-Primary

        Destination: 192.168.140.196/30, Local: 192.168.140.197, Broadcast: 
Unspecified, Generation: 44

What It Means

Check for any error statistics that may appear in the output. There should not be any input or output errors. If there are any persistent input or output errors, open a case with JTAC at support@juniper.net, or at 1-888-314-JTAC (within the United States) or 1-408-745-9500 (from outside the United States).