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【原创翻译】CSCto61593 Nexus 5000/5500交换机无法显示input discard

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发表于 2018-4-25 16:52:55 | 显示全部楼层 |阅读模式
本帖最后由 yondong 于 2018-4-25 16:59 编辑

Nexus 5000/5500交换机

对于5.2.1N1(8b)之前的版本,交换机无法显示接口input discard
示例如下:
N5K-2(config-if-range)# show inter po101
port-channel101 is up
  Hardware: Port-Channel, address:00de.fb27.5734 (bia 00de.fb27.5734)
  Description: PBB1C5KSW10_FEX101_Po
  MTU 1500 bytes, BW 40000000 Kbit,,BW 40000000 Kbit, DLY 10 usec
  reliability 255/255, txload 1/255,rxload 1/255
  Encapsulation ARPA, medium isbroadcast
  Port mode is fex-fabric
  full-duplex, 10 Gb/s
  Input flow-control is off, outputflow-control is off
  Switchport monitor is off
  EtherType is 0x8100
  Members in this channel: Eth1/45,Eth1/46, Eth1/47, Eth1/48 <<<<<成员端口

N5K-2# show queuing inter e1/45 | grepdiscarded ; show queuing inter e1/46 | grep discarded ; show queuing intere1/47 | grep discarded ; show queuing inter e1/48 | grep discarded
        Pkts discardedon ingress               : 0
        Pkts discarded oningress               : 0
        Pkts discardedon ingress               : 0
        Pkts discardedon ingress               : 9933 <<<<<成员端口QOS有丢包

N5K-2# show inter po 101
    input rate 56.42 Mbps, 4.67Kpps; output rate 55.28 Mbps, 4.57 Kpps
  RX
    500482 unicast packets 289 multicast packets  1 broadcast packets
    500772 input packets 755630993 bytes
    149 jumbo packets  0storm suppression bytes
    0 runts  0 giants 0 CRC  0 no buffer
    0 input error  0 shortframe  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etypedrop  0 bad proto drop  0 if down drop
    0 input with dribble  0 input discard <<<<<Po接口入向并未显示丢包
    0 Rx pause

N5K-2# show queuing inter e1/45 | grepdiscarded ; show queuing inter e1/46 | grep discarded ; show queuing intere1/47 | grep discarded ; show queuing inter e1/48 | grep discarded
        Pkts discardedon ingress               : 0
        Pkts discardedon ingress               : 0
        Pkts discardedon ingress               : 0
        Pkts discardedon ingress               : 19865 <<<<<成员端口QOS丢包增长

N5K-2# show inter po 101
    input rate 59.60 Mbps, 4.90Kpps; output rate 58.40 Mbps, 4.80 Kpps
  RX
    1000694 unicast packets 405 multicast packets  1 broadcast packets
    1001100 input packets 1510935121 bytes
    249 jumbo packets  0storm suppression bytes
    0 runts  0 giants 0 CRC  0 no buffer
    0 input error  0 shortframe  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etypedrop  0 bad proto drop  0 if down drop
    0 input with dribble  0 input discard <<<<<Po接口入向仍然未显示丢包
    0 Rx pause


对于5.2.1N1(8b)之后的版本,交换机可以显示接口input discard
示例如下:
N5K-2(config)# show fex 101
FEX: 101 Description: FEX0101   state:Online
  FEX version: 7.1(4)N1(1) [Switchversion: 7.1(4)N1(1)]
  Extender Serial: SSI15130AN0
  Extender Model: N2K-C2232PP-10GE, Part No: 73-12533-05
  Pinning-mode: static   Max-links: 1
  Fabric port for control traffic:Eth1/45
  FCoE Admin: false
  FCoE Oper: true
  FCoE FEX AA Configured: false
  Fabric interface state:
    Po101 - Interface Up. State:Active
    Eth1/45 - Interface Up.State: Active
    Eth1/46 - Interface Up.State: Active
    Eth1/47 - Interface Up.State: Active
    Eth1/48 - Interface Up.State: Active

N5K-2(config-if-range)# show inter po101 |in 'input discard'
    0 input with dribble  0 input discard <<<<<可以显示input discard


N5K-2(config-if-range)# show inter po101 |in 'input discard'
    0 input with dribble  179 input discard <<<<<input discard增长

N5K-2(config-if-range)# show inter po101
port-channel101 is up
  Hardware: Port-Channel, address:00de.fb27.5734 (bia 00de.fb27.5734)
  Description: PBB1C5KSW10_FEX101_Po
  MTU 1500 bytes, BW 40000000 Kbit,,BW 40000000 Kbit, DLY 10 usec
  reliability 255/255, txload 1/255,rxload 1/255
  Encapsulation ARPA, medium isbroadcast
  Port mode is fex-fabric
  full-duplex, 10 Gb/s
  Input flow-control is off, outputflow-control is off
  Switchport monitor is off
  EtherType is 0x8100
  Members in this channel: Eth1/45,Eth1/46, Eth1/47, Eth1/48 <<<<<成员端口
  Last clearing of "showinterface" counters never
  13 interface resets
  30 seconds input rate 3591168bits/sec, 291 packets/sec
  30 seconds output rate 3495072bits/sec, 283 packets/sec
  Load-Interval #2: 5 minute (300seconds)
    input rate 1.12 Mbps, 57 pps; output rate 1.07 Mbps, 52pps
  RX
    245767 unicast packets 115838 multicast packets  2703 broadcast packets
    364308 input packets 379362299 bytes
    0 jumbo packets  0 stormsuppression bytes
    0 runts  0 giants 0 CRC  0 no buffer
    0 input error  0 shortframe  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etypedrop  0 bad proto drop  0 if down drop
    0 input with dribble  358 input discard <<<<<可以显示input discard
    0 Rx pause

N5K-2(config-if-range)# show intere101/1/1-2 | in 'input discard'
    0 input with dribble  0input discard
    0 input with dribble  0input discard


N5K-2(config-if-range)# show inter po101 |egrep discard|rate | ex bits/sec | ex carrier ; show inter e101/1/1-2 |grep 'input discard'
    input rate 4.36 Mbps, 296 pps; output rate 4.26 Mbps, 292pps
    0 input with dribble  537 input discard <<<<<同时可以看到QOS丢包
    0 input with dribble  0input discard
    0 input withdribble  0 input discard

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