Chapter 12
| Port Mirroring Commands
RSPAN Mirroring Commands
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Example
The following example configures the switch to mirror received packets from port 2
and 3:
Console(config)#rspan session 1 source interface ethernet 1/2 rx
Console(config)#rspan session 1 source interface ethernet 1/3 rx
Console(config)#
rspan destination Use this command to specify the destination port to monitor the mirrored traffic.
Use the no form to disable RSPAN on the specified port.
Syntax
rspan session session-id destination interface interface [tagged | untagged]
no rspan session session-id destination interface interface
session-id – A number identifying this RSPAN session. (Range: 1-2)
Only two mirror sessions are allowed, including both local and remote
mirroring. If local mirroring is enabled with the port monitor command,
then there is only one session available for RSPAN.
interface - ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-32/54)
tagged - Traffic exiting the destination port carries the RSPAN VLAN tag.
untagged - Traffic exiting the destination port is untagged.
Default Setting
Traffic exiting the destination port is untagged.
Command Mode
Global Configuration
Command Usage
â—† Only one destination port can be configured on the same switch per session,
but a destination port can be configured on more than one switch for the same
session.
◆ Only ports can be configured as an RSPAN destination – static and dynamic
trunks are not allowed.
â—† The source port and destination port cannot be configured on the same switch.
â—† A destination port can still send and receive switched traffic, and participate in
any Layer 2 protocols to which it has been assigned.