Monitoring Sources For the specified local session, displays the source (port, trunk, or VLAN) interface and
the MAC address (if configured) used to select mirrored traffic.
Direction For the selected interface, indicates whether mirrored traffic is entering the switch (in),
leaving the switch (out), or both.
Using the Menu to configure local mirroring
Menu and WebAgent limits
You can use the Menu and WebAgent to quickly configure or reconfigure local mirroring on session 1 and allow
one of the following two mirroring source options:
• Any combination of source ports, trunks, and a mesh.
• One static, source VLAN interface.
The Menu and WebAgent also has these limits:
• Configure and display only session 1 and only as a local mirroring session for traffic in both directions on the
specified interface. (Selecting inbound-only or outbound-only is not an option.)
• If session 1 has been configured in the CLI for local mirroring for inbound-only or outbound-only traffic on one
or more interfaces, using the Menu to change the session 1 configuration automatically reconfigures the
session to monitor both inbound and outbound traffic on the designated interface(s.)
• If session 1 has been configured in the CLI with an ACL/classifier-based mirroring policy or as a remote
mirroring session, the Menu is not available for changing the session 1 configuration.
• The CLI (and SNMP) can be used to override any Menu configuration of session 1.
High-level overview of the mirror configuration process
Determine the mirroring session and destination
For a local mirroring session
Determine the port number for the exit port (such as A5, B10, and so forth), then go to Configure the monitored
traffic in a mirror session.
Configure the monitored traffic in a mirror session
This step configures one or more interfaces on a source switch with traffic-selection criteria to select the traffic to
be mirrored in a local session configured in section.
Classifier-based mirroring configuration
1. Evaluate the types of traffic in your network and identify the traffic types that you want to mirror.
2. Create an IPv4 or IPv6 traffic class using the class command to select the packets that you want to mirror in
a session on a preconfigured local or remote destination device.
A traffic class consists of match criteria, which consist of match and ignore commands.
Chapter 15 Monitoring and Analyzing Switch Operation 295
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