KB.15.15

Figure 181 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.

Figure 182 Mirroring configuration in which only traffic-selection criteria are supported

About applying multiple mirroring sessions to an interface

You can apply a mirroring policy to an interface that is already configured with another

traffic-selection method (MAC-based or all inbound and/or outbound traffic) for a different mirroring

session.

The classifier-based policy provides a finer level of granularity that allows you to zoom in on a

subset of port or VLAN traffic and select it for local or remote mirroring.

In the following example, traffic on Port b1 is used as the mirroring source for two different, local

mirroring sessions:

• All inbound and outbound traffic on Ports b1, b2, and b3 is mirrored in session 4.

• Only selected voice traffic on Port b1 is mirrored in session 2.

358 Monitoring and Analyzing Switch Operation