Step 3: Display Extensive Status Information for a Specific SONET Interface

Action

To display extensive status information about a specific interface, use the following JUNOS CLI operational mode command:

user@host> show interfaces so-fpc/pic/port extensive

Sample Output

user@router> show interfaces so-1/1/1 extensive 

Physical interface: so-1/1/1, Enabled, Physical link is Down

  Interface index: 17, SNMP ifIndex: 16

  Description: router-02 pos 4/0

  Link-level type: Cisco-HDLC, MTU: 4474, Clocking: Internal, SONET mode

  Speed: OC3, Loopback: None, CRC: 32, Payload scrambler: Enabled

  Device flags   : Present Running Down

  Interface flags: Hardware-Down Link-Layer-Down Point-To-Point SNMP-Traps

  Link flags     : Keepalives

  Keepalive statistics:

    Input : 621 (last seen 00:05:35 ago)

    Output: 905 (last seen 00:00:07 ago)

  Statistics last cleared: Never

  Traffic statistics:

   Input  bytes  :            378736540                    0 bps

   Output bytes  :              6786356                    0 bps

   Input  packets:               225924                    0 pps

   Output packets:               104798                    0 pps

  Input errors: 

    Errors: 8, Drops: 0, Framing errors: 4181286, Runts: 0, Giants: 8

    Policed discards: 9474, L3 incompletes: 0, L2 channel errors: 0

    L2 mismatch timeouts: 3, HS link CRC errors: 0, HS link FIFO overflows: 0

  Output errors: 

    Carrier transitions: 2, Errors: 0, Drops: 0, Aged packets: 0

    HS link FIFO underflows: 0

  Active alarms  : LOL, LOS <-- SONET active alarms and defects

  Active defects : LOL, LOF, LOS, SEF, AIS-L, AIS-P, PLM-P

  SONET PHY:            Seconds        Count  State <-- SONET media-specific 

                                                        errors

    PLL Lock                  0            0  OK

    PHY Light               328            1  Light Missing

  SONET section:                    <-- SONET section errors

    BIP-B1                    0            0

    SEF                     329            3  Defect Active

    LOS                     329            2  Defect Active

    LOF                     329            2  Defect Active

    ES-S                    329

    SES-S                   329

    SEFS-S                  329

  SONET line:                    

    BIP-B2                    0            0

    REI-L                     0            0

    RDI-L                     0            0  OK

    AIS-L                   328            1  Defect Active

    BERR-SF                   0            0  OK

    BERR-SD                   0            0  OK

    ES-L                    329

    SES-L                   329

    UAS-L                   318

    ES-LFE                    0

    SES-LFE                   0

    UAS-LFE                   0

  SONET path:                    

    BIP-B3                    0            0

    REI-P                     0            0

    LOP-P                     1            1  OK

    AIS-P                   328            1  Defect Active

    RDI-P                     0            0  OK

    UNEQ-P                    0            0  OK

    PLM-P                   328            1  Defect Active

    ES-P                    329

    SES-P                   329

    UAS-P                   318

    ES-PFE                    0

    SES-PFE                   0

    UAS-PFE                   0

[...Output truncated...]

What It Means

The sample output details where the errors might be occurring. Error details include input and output errors, active alarms and defects, and media-specific errors. The SONET section, line, and path errors help narrow down the source of the problem.

If the physical link is down, look at the active alarms and defects for the SONET interface and troubleshoot the SONET media accordingly. See Locate SONET Alarms and Errors for an explanation of SONET alarms.