问题描述

现场做的本地镜像远程vlan多目的，源端口为1/0/3和2/0/3入方向 ，但是监控目的口1/0/6,2/0/6看发现镜像流量比源端口少。

过程分析

1.查看源端口和目的端口流量1/0/3和2/0/3的300s的报文总和要比镜像目的口多好多。

[NRM-PD-FAB#1F-S6520X-DS-01]dis int ten 1/0/3

Ten-GigabitEthernet1/0/3

Current state: UP

Line protocol state: UP

Last 300 seconds input: 42 packets/sec 5430 bytes/sec 0%

Last 300 seconds output: 128 packets/sec 18450 bytes/sec 0%

[NRM-PD-FAB#1F-S6520X-DS-01]dis int ten 2/0/3

Ten-GigabitEthernet2/0/3

Current state: UP

Line protocol state: UP

Last 300 seconds input: 33 packets/sec 5958 bytes/sec 0%

Last 300 seconds output: 32 packets/sec 5356 bytes/sec 0%

[NRM-PD-FAB#1F-S6520X-DS-01]dis int ten 1/0/6

Ten-GigabitEthernet1/0/6

Current state: UP

Line protocol state: UP

Last 300 seconds input: 0 packets/sec 2 bytes/sec 0%

Last 300 seconds output: 7 packets/sec 1050 bytes/sec 0%

[NRM-PD-FAB#1F-S6520X-DS-01]dis int ten 2/0/6

Ten-GigabitEthernet2/0/6

Current state: UP

Line protocol state: UP

Last 300 seconds input: 0 packets/sec 2 bytes/sec 0%

Last 300 seconds output: 7 packets/sec 1081 bytes/sec 0%

2.查看镜像状态也是正常的

[NRM-PD-FAB#1F-S6520X-DS-01]display mirroring-group all

Mirroring group 1:

Type: Remote source

Status:Active

Mirroring port:

Ten-GigabitEthernet1/0/3 Inbound

Ten-GigabitEthernet2/0/3 Inbound

Reflector port: Ten-GigabitEthernet1/0/22

Remote probe VLAN: 8

3.进一步查看配置，发现远程镜像vlan在镜像源端口也放通了。

解决方法

不能将源端口加入到远程镜像VLAN中，否则会影响镜像功能的正常使用。修改配置后正常。