Step 6: Check for Fast Ethernet or Gigabit Ethernet Interface Error Statistics

Purpose

Persistent interface error statistics indicate that you need to open a case with the Juniper Networks Technical Assistance Center (JTAC).

Action

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

user@host> show interfaces (fe-fpc/pic/port | ge-fpc/pic/port) extensive 

Sample Output

user@router> show interfaces ge-7/2/1 extensive 

Physical interface: ge-7/2/1, Enabled, Physical link is Up

  Interface index: 25, SNMP ifIndex: 32, Generation: 41

  Description: Test

  Link-level type: Ethernet, MTU: 4470, Speed: 1000mbps, Loopback: Disabled,

  Source filtering: Disabled, Flow control: Disabled

  Device flags   : Present Running

  Interface flags: SNMP-Traps

  Link flags     : None

  Hold-times     : Up 0 ms, Down 0 ms

  Current address: 00:90:69:4c:17:b1, Hardware address: 00:90:69:4c:17:b1

  Statistics last cleared: 2002-01-07 17:53:19 UTC (2w2d 03:20 ago)

  Traffic statistics:

   Input  bytes  :        3799515503823                    0 bps

   Output bytes  :           7325566425                    0 bps

   Input  packets:           4628009535                    0 pps

   Output packets:             30678225                    0 pps

  Input errors:

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

    L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0

  Output errors:

    Carrier transitions: 14, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 
0,

    FIFO errors: 0, HS link CRC errors: 0

  Active alarms  : None

  Active defects : None

  MAC statistics:                      Receive         Transmit

    Total octets                 3883579444813       7880356346

    Total packets                   4628009534         30678237

    Unicast packets                 4627879788         29893563

    Broadcast packets                       30              464

    Multicast packets                   129716           784210

    CRC/Align errors                         0                0

    FIFO errors                              0                0

    MAC control frames                       0                0

    MAC pause frames                         0                0

    Oversized frames                         0

    Jabber frames                            0

    Fragment frames                          0

    VLAN tagged frames                       0

    Code violations                          0

  Filter statistics:

    Input packet count              4628009244

    Input packet rejects                     0

    Input DA rejects                         0

    Input SA rejects                         0

    Output packet count                                30678237

    Output packet pad count                              856248

    Output packet error count                                 0

    CAM destination filters: 9, CAM source filters: 0

  Autonegotiation information:

    Negotiation status: Complete, Link partner status: Ok, Link partner: 
Full-duplex,

    Flow control: None

  PFE configuration:

    Destination slot: 7

    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 ge-7/2/1.0 (Index 23) (SNMP ifIndex 48) (Generation 38)

    Description: To Cosine Left 23/1

    Flags: SNMP-Traps Encapsulation: ENET2

    Protocol inet, MTU: 4456, Flags: None, Generation: 85 Route table: 0

      Addresses, Flags: Is-Preferred Is-Primary

        Destination: 10.108.120.0/30, Local: 10.108.120.1, Broadcast: 
10.108.120.3,

        Generation: 81

    Protocol iso, MTU: 4453, Flags: None, Generation: 86 Route table: 0

What It Means

Check for any error statistics. There should not be any input or output errors. If there are any persistent input or output errors, open a case with the Juniper Networks Technical Assistance Center (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).