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Monitoring and Analyzing Switch Operation
Traffic Mirroring
■ If a mirroring session is configured with a classifier-based mirroring policy
on a port or VLAN interface, no other traffic-selection criteria (MAC-based
or all inbound and/or outbound traffic) can be added to the session.
Switch-B(config)# mirror endpoint 10.10.40.4 9200 10.10.50.5 port a1
...
Switch-A(config)# mirror 1 remote ip 10.10.40.4 9200 10.10.50.5
Caution: Please configure destination switch first.
Do you want to continue [y/n]? y
Switch-A(config)# class ipv4 Data2
Switch-A(config-class)# match ip 10.28.31.1 any
Switch-A(config-class)# match ip any host 10.28.31.0/24
Switch-A(config-class)# exit
Switch-A(config)# policy mirror SalesData
Switch-A(config-policy)# class ipv4 Data2 action mirror 1
Switch-A(config-policy)# exit
Switch-A(config)# vlan 10 service-policy SalesData in
Switch-A(config)# vlan 10 monitor all out mirror 1
A prior mirror policy relationship exists with mirror session 1. Please remove.
Classifier-based policy used to select
mirrored traffic in session 1
The configuration of additional traffic-direction criteria
to select mirrored traffic is not supported in session 1.
Figure B-30. Mirroring Configuration in Which Only a Mirroring Policy is Supported
■ If a mirroring session is already configured with one or more traffic-
selection criteria (MAC-based or all inbound and/or outbound traffic), the
session does not support the addition of a classifier-based policy.
Switch-B(config)# mirror endpoint 10.10.40.4 9200 10.10.50.5 port a1
...
Switch-A(config)# mirror 1 remote ip 10.10.40.4 9200 10.10.50.5
Caution: Please configure destination switch first.
Do you want to continue [y/n]? y
Switch-A(config)# vlan 10 monitor all out mirror 1
Switch-A(config)# class ipv4 Data2
Configuration of traffic-direction criteria to select
Switch-A(config-class)# match ip 10.28.31.1 any
all outbound traffic on VLAN 10 in mirror session 1
Switch-A(config-class)# match ip any host 10.28.31.0/24
Switch-A(config-class)# exit
Switch-A(config)# policy mirror SalesData
Switch-A(config-policy)# class ipv4 Data2 action mirror 1
Switch-A(config-policy)# exit
Switch-A(config)# vlan 10 service-policy SalesData in
Mirror source VLAN exists on mirror session 1. Cannot add this mirror source.
The configuration of an additional classifier-based
policy to select mirrored traffic on VLAN 10 is not
supported in session 1.
Figure B-31. Mirroring Configuration in Which Only Traffic-Selection Criteria are Supported
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