MSR56建立VPLS，作为PE无法学习到下连CE的MAC地址

CE---PE---P---PE（MSR56）---CE

两端跑VPLS业务，56侧可以学习到对端CE的MAC地址，但是无法学习到本端CE交换机的MAC地址。更换CE也无法学习到。

隧道正常建立，LDP及PW都没有异常，且56能学到对端的MAC地址。

interface GigabitEthernet2/0/2.1

mpls enable

mpls ldp enable

vlan-type dot1q vid 3

xconnect vsi abxwj

===============display l2vpn pw=============== 

Flags: M - main, B - backup, BY - bypass, H - hub link, S - spoke link, N - no split horizon

Total number of PWs: 1

1 up, 0 blocked, 0 down, 0 defect, 0 idle, 0 duplicate

VSI Name: abxwj

Peer            PW ID/Rmt Site    In/Out Label    Proto   Flag  Link ID  State 

10.71.20.81     513200112         917631/133758   LDP     M     8        Up    

===============display l2vpn ldp=============== 

Total number of LDP PWs: 1, 1 up, 0 down

Peer            PW ID/VPLS ID         In/Out Label    State Owner

10.71.20.81     513200112             917631/133758   Up    abxwj

===============display l2vpn forwarding pw=============== 

Total number of VSIs: 1

Total number of PWs: 1, 1 up, 0 blocked, 0 down

VSI Name                        In/Out Label    NID        Link ID    State  

abxwj                           917631/133758   64         8          Up      

随将我们MSR56 vsi所在得物理接口接口从2口换为6口后，MAC地址学习正常，业务恢复。

测试发现，业务换到接口2口3口都异常，换到6口则业务恢复。

怀疑设备硬件有问题，此类问题建议收集故障口的如下信息：

display interfece GigabitEthernet 2/0/0---2/0/3

display hardware internal physical GigabitEthernet 2/0/0 statistic

display hardware internal physical GigabitEthernet 2/0/1 statistic

display hardware internal physical GigabitEthernet 2/0/2 statistic

display hardware internal physical GigabitEthernet 2/0/3 statistic

dis hardware internal dump GigabitEthernet 2/0/0 chip 1 channel

dis hardware internal dump GigabitEthernet 2/0/0 chip 2 channel

dis hardware internal dump GigabitEthernet 2/0/1 chip 1 channel

dis hardware internal dump GigabitEthernet 2/0/1 chip 2 channel

dis hardware internal dump GigabitEthernet 2/0/2 chip 1 channel

dis hardware internal dump GigabitEthernet 2/0/2 chip 2 channel

dis hardware internal dump GigabitEthernet 2/0/3 chip 1 channel

dis hardware internal dump GigabitEthernet 2/0/3 chip 2 channel

如上信息收集后，可判断 G2/0/0 -- G2/0/3 接收通道无法收包，发送通道正常、只有广播/组播包(无法学习到MAC)。怀疑此四个口对应的CPU MAC出问题。更换备件即可。

GigabitEthernet2/0/0

Last 300 second input: 0 packets/sec 0 bytes/sec 0%

Last 300 second output: 0 packets/sec 36 bytes/sec 0%

Input (total):  0 packets, 0 bytes

         - unicasts, - broadcasts, - multicasts, - pauses

Input (normal):  0 packets, - bytes

         0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Input:  0 input errors, 0 runts, 0 giants, - throttles

         0 CRC, - frame, - overruns, 0 aborts

         - ignored, - parity errors                          //无法接收了

Output (total): 745515 packets, 82379963 bytes

         - unicasts, - broadcasts, - multicasts, - pauses

Output (normal): 745515 packets, - bytes

         0 unicasts, 14 broadcasts, 745501 multicasts, 0 pauses

Output: 0 output errors, - underruns, - buffer failures

         0 aborts, 0 deferred, 0 collisions, 0 late collisions

         - lost carrier, - no carrier

[MSR5560-probe]display hardware internal physical GigabitEthernet 2/0/0 statistic

Hardware information of receive:

  Input packets:        0

  Broadcast packets:    0

  Multicast packets:    0

  Align error packets:  0

  CRC errors packets:   0

  Symb errors packets:  0

  Sequence err packets: 0

  Recv No Buffers:      0

  Short Packets(<64):   0

  TooLongErrs Packets:  0

  Missed packets(fifo): 0                  //没有接收计数

Hardware information of transmitted:

  Output packets:       745331

  Broadcast packets:    14

  Multicast packets:    745317

  Defered Packets:      0

  No ready(underrun):   0

  Lost Carriers:        0

  Late collisions:      0

  Total collision:      0