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
<<<<
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
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
<<<<
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
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
