Users Guide

Layer 2 Switching Commands 697
monitor session
Use the monitor session command in Global Configuration mode to
configure the source and destination for mirroring. Packets are copied from
the source to the destination. Use the no form of the command to disable the
monitoring session.
Syntax
monitor session session-number source {interface {interface–id | cpu | port-
channel port-channel-id }|vlan vlan-id | remote vlan rspan-vlan-id}[rx | tx]
no monitor session session-number source {interface {interface–id | cpu |
port-channel port-channel-id }| vlan vlan-id | remote vlan rspan-vlan-id}
[no] monitor session session-number destination {interface interface–id
[remove-rspan-tag] | remote vlan rspan-vlan-id}
[no] monitor session session-number filter {ip access-group [acl-name | acl-
number] | mac access-group acl-name}
no monitor session session-number mode
• session-number— Session identification number. (Range: 1-4)
• interface–id — Physical Ethernet interface.
• cpu—The CPU interface.
• port-channel–id — A port channel identifier.
• vlan vlan-id— The source VLAN identifier. All the ports in this VLAN are
mirrored in the ingress direction only. The source VLAN must not be the
RSPAN VLAN.
• acl-name— An IP or MAC ACL name.
• remote vlan rspan-vlan-id— An RSPAN VLAN configured on the source
switch.
• rx — Mirrors received packets only. If no option specified, monitors both rx
and tx.
• tx — Mirrors transmitted packets only. If no option is specified, monitors
both rx and tx.
• both—Mirrors both ingress and egress. This is the default.