Juniper QFX5100交換機et接口input error及CRC/Align errors

故障現象:Juniper QFX5100-24Q經過監控發現et-0/0/2上出現Error包。ide


經過命令:show interfaces et-0/0/2 extensive,顯示input error以及CRC錯誤。oop


狀態顯示:
spa


Physical interface: et-0/0/2, Enabled, Physical link is Up接口

  Interface index: 942, SNMP ifIndex: 516, Generation: 676ip

  Link-level type: Ethernet, MTU: 1514, Speed: 40Gbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Disabled, Media type: Fiberinput

  Device flags   : Present Runningit

  Interface flags: SNMP-Traps Internal: 0x4000io

  Link flags     : Noneast

  Input errors:class

    Errors: 771731, Drops: 0, Framing errors: 771415, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0

  Output errors:

    Carrier transitions: 3, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0

…………………………

  MAC statistics:                      Receive         Transmit

    Total octets                 1216533781969    1073277356863

    Total packets                   1669078594       1462519491

    Unicast packets                 1633851744       1398747806

    Broadcast packets                   361455         27733729

    Multicast packets                 34865395         36037956

    CRC/Align errors                    771415                0

    FIFO errors                              0                0


初步排查,影響的緣由有多是如下幾點: 

1. 接口模塊 

2. 光線或網線

3. 兩邊接口是否全雙工


解決辦法:

經換模塊,CRC顯示正常,input error恢復正常。 開Case,對模塊進行RMA處理。 

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