Cisco CATALYST 2960

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Catalyst 2960 Switch Command Reference
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Chapter 2 Catalyst 2960 Switch Cisco IOS Commands
monitor session
Defaults No monitor sessions are configured.
On a source interface, the default is to monitor both received and transmitted traffic.
On a trunk interface used as a source port, all VLANs are monitored.
If encapsulation replicate is not specified on a local SPAN destination port, packets are sent in native
form with no encapsulation tag.
Ingress forwarding is disabled on destination ports.
Command Modes Global configuration
Command History
dot1q vlan vlan-id Accept incoming packets with IEEE 802.1Q encapsulation with the
specified VLAN as the default VLAN.
untagged vlan vlan-id Accept incoming untagged encapsulation with the specified VLAN as the
default VLAN.
vlan vlan-id When used with only the ingress keyword, set default VLAN for ingress
traffic.
remote vlan vlan-id Specify the remote VLAN for an RSPAN source or destination session. The
range is 2 to 1001 and 1006 to 4094.
The RSPAN VLAN cannot be VLAN 1 (the default VLAN) or VLAN IDs
1002 to 1005 (reserved for Token Ring and FDDI VLANs).
, (Optional) Specify a series of interfaces or VLANs, or separate a range of
interfaces or VLANs from a previous range. Enter a space before and after
the comma.
- (Optional) Specify a range of interfaces or VLANs. Enter a space before
and after the hyphen.
filter vlan vlan-id Specify a list of VLANs as filters on trunk source ports to limit SPAN
source traffic to specific VLANs. The vlan-id range is 1 to 4094.
source Specify the SPAN or RSPAN source. A source can be a physical port, a port
channel, or a VLAN.
both, rx, tx (Optional) Specify the traffic direction to monitor. If you do not specify a
traffic direction, the source interface sends both transmitted and received
traffic.
source vlan vlan-id Specify the SPAN source interface as a VLAN ID. The range is 1 to 4094.
all, local, remote Specify all, local, or remote with the no monitor session command to clear
all SPAN and RSPAN, all local SPAN, or all RSPAN sessions.
Release Modification
12.2(25)FX This command was introduced.