Setup Guide

• You cannot congure the dedicated VLAN used to transport mirrored trac as a source VLAN.
• Egressing remote-vlan packets are rate limited to a default value of 100 Mbps. To change the mirroring rate, congure rate-limit within
the RPM session.
In a destination session used for remote port mirroring:
• Maximum number of destination sessions supported on a switch: 64
• Maximum number ports supported in a destination session: 64.
• You can congure any port as a destination port.
• You can congure additional destination ports in an active session.
• You can tunnel the mirrored trac from multiple remote-port source sessions to the same destination port.
• By default, destination port sends the mirror trac to the probe port by stripping o the rpm header. We can also congure the
destination port to send the mirror trac with the rpm header intact in the original mirror trac..
• By default, ingress trac on a destination port is dropped.
Restrictions
When you congure remote port mirroring, the following restrictions apply:
• You can congure the same source port to be used in multiple source sessions.
• You cannot congure a source port channel or source VLAN in a source session if the port channel or VLAN has a member port that is
congured as a destination port in a remote-port mirroring session.
• A destination port for remote port mirroring cannot be used as a source port, including the session in which the port functions as the
destination port.
• A destination port cannot be used in any spanning tree instance.
• The reserved VLAN used to transport mirrored trac must be a L2 VLAN. L3 VLANs are not supported.
• On a source switch on which you congure source ports for remote port mirroring, you can add only one port to the dedicated RPM
VLAN which is used to transport mirrored trac. You can congure multiple ports for the dedicated RPM VLAN on intermediate and
destination switches.
Displaying Remote-Port Mirroring Congurations
To display the current conguration of remote port mirroring for a specied session, enter the show cong command in MONITOR
SESSION conguration mode.
To display the currently congured source and destination sessions for remote port mirroring on a switch, enter the show monitor session
command in EXEC Privilege mode.
To display the current conguration of the reserved VLAN, enter the show vlan command.
Conguration procedure for Remote Port Mirroring
To congure remote port mirroring, you must congure:
1 A reserved VLAN used to transport mirrored packets on source, intermediate, and destination switches
2 A source session that consists of multiple source ports, port channels, and VLANs which are associated with the dedicated VLAN and
located on dierent source switches
3 A destination session that consists of multiple destination ports associated with the dedicated VLAN and located on dierent
destination switches
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Port Monitoring