Cisco Catalyst 3750 Metro

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Catalyst 3750 Metro Switch Command Reference
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Chapter 2 Catalyst 3750 Metro Switch Cisco IOS Commands
monitor session
monitor session
Use the monitor session global configuration command to start a new Switched Port Analyzer (SPAN)
session or Remote SPAN (RSPAN) source or destination session, to enable ingress traffic on the
destination port for a network security device (such as a Cisco IDS Sensor Appliance), to add or delete
interfaces or VLANs to or from an existing SPAN or RSPAN session, and to limit (filter) SPAN source
traffic to specific VLANs. Use the no form of this command to remove the SPAN or RSPAN session or
to remove source or destination interfaces or filters from the SPAN or RSPAN session. For destination
interfaces, the encapsulation replicate keywords are ignored with the no form of the command.
monitor session session_number destination {interface interface-id [, | -] [encapsulation
replicate] [ingress {dot1q vlan vlan-id | isl | untagged vlan vlan-id | vlan vlan-id}]} | {remote
vlan vlan-id}
monitor session session_number filter vlan vlan-id [, | -]
monitor session session_number source {interface interface-id [, | -] [both | rx | tx]} | {remote
vlan vlan-id} | {vlan vlan-id [, | -] [both | rx | tx]}
no monitor session {session_number | all | local | remote}
no monitor session session_number destination {interface interface-id [, | -] [encapsulation
replicate] [ingress {dot1q vlan vlan-id | isl | untagged vlan vlan-id | vlan vlan-id}]} | {remote
vlan vlan-id}
no monitor session session_number filter vlan vlan-id [, | -]
no monitor session session_number source {interface interface-id [, | -] [both | rx | tx]} | {remote
vlan vlan-id} | {vlan vlan-id [, | -] [both | rx | tx]}
Syntax Description session_number Specify the session number identified with the SPAN or RSPAN session.
The range is 1 to 66.
destination Specify the SPAN or RSPAN destination. A destination must be a physical
port.
interface interface-id Specify the destination or source interface for a SPAN or RSPAN session.
Valid interfaces are physical ports. For source interface, port channel is
also a valid interface type, and the valid range is 1 to 12.
encapsulation replicate (Optional) Specify that the destination interface replicates the source
interface encapsulation method. If not selected, the default is to send
packets in native form (untagged).
Note Entering these keywords is valid only for local SPAN; for RSPAN,
the RSPAN VLAN ID overwrites the original VLAN ID; therefore
packets are always sent untagged.
ingress (Optional) Enable ingress traffic forwarding.
dot1q vlan vlan-id Specify ingress forwarding using 802.1Q encapsulation with the specified
VLAN as the default VLAN for ingress traffic.
isl Specify ingress forwarding using ISL encapsulation.
untagged vlan vlan-id Specify ingress forwarding using untagged encapsulation with the specified
VLAN as the default VLAN for ingress traffic