Step 8: Check for T3 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 t3-fpc/pic/port extensive 

Sample Output

user@router> show interfaces t3-1/0/0 extensive

Physical interface: t3-1/0/0, Enabled, Physical link is Down

  Interface index: 9, SNMP ifIndex: 10

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

  Speed: T3, Loopback: None, CRC: 16, Mode: C/Bit parity

  Device flags   : Present Running Down

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

  Link flags     : Keepalives

  Keepalive statistics:

    Input : 116 (last seen 00:02:59 ago)

    Output: 187 (last seen 00:00:09 ago)

  Statistics last cleared: Never

  Traffic statistics:

   Input  bytes  :                 2552                    0 bps

   Output bytes  :                 3703                    0 bps

   Input  packets:                  116                    0 pps

   Output packets:                  161                    0 pps

  Input errors:

    Errors: 0, Drops: 0, Framing errors: 229, Policed discards: 1

    L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0

    SRAM errors: 0, HS link CRC errors: 0

  Output errors:

    Carrier transitions: 4, Errors: 0, Drops: 0, Aged packets: 0

  Active alarms  : LOF, LOS

  Active defects : LOF, LOS

  DS3 Media:            Seconds        Count  State

    PLL Lock                  0            0  OK

    Reframing               273            2  Defect Active

    AIS                       0            0  OK

    LOF                     273            2  Defect Active

    LOS                     273            2  Defect Active

    IDLE                      0            0  OK

    YELLOW                    0            0  OK

    BPV                       0            0

    EXZ                       0            0

    LCV                     275     18022125

    PCV                       0            0

    CCV                       0            0

    LES                     275

    PES                     273

    PSES                    273

    CES                     273

    CSES                    273

    SEFS                    273

    UAS                     277

  HDLC configuration:

    Policing bucket: Disabled

    Shaping bucket : Disabled

    Giant threshold: 4484, Runt threshold: 3

  DSU configuration:

    Compatibility mode: None, Scrambling: Disabled, Subrate: Disabled

    FEAC loopback: Inactive, Response: Disabled, Count: 0

    BERT time period: 10 seconds, Elapsed: 0 seconds

    Algorithm: 2^3 - 1, Pseudorandom (1), Error rate: 10e-0

  PFE configuration:

    Destination slot: 1, Stream number: 0, PLP byte: 1 (0x00)

    COS transmit queue bandwidth:

      Queue0: 95, Queue1: 0, Queue2: 0, Queue3: 5

    COS weighted round robin:

      Queue0: 95, Queue1: 0, Queue2: 0, Queue3: 5

  Logical interface t3-1/0/0.0 (Index 12) (SNMP ifIndex 32)

    Flags: Device-down Point-To-Point SNMP-Traps, Encapsulation: Cisco-HDLC

    Protocol inet, MTU: 4470, Flags: None

      Addresses, Flags: Dest-route-down Is-Preferred Is-Primary

        Destination: 1.1.1.0/30, Local: 1.1.1.1, Broadcast: Unspecified

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).