Cisco 2950G 24 Software Configuration Guide - Page 457
Catalyst 2950 Desktop Switch Software Configuration Guide, Configuring SPAN and RSPAN
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Chapter 21 Configuring SPAN and RSPAN Configuring RSPAN Specifying VLANs to Filter Beginning in privileged EXEC mode, follow these steps to limit RSPAN source traffic to specific VLANs: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Command Purpose configure terminal Enter global configuration mode. no monitor session {session_number | all | Clear any existing SPAN configuration for the session. local | remote} For session_number, specify 1 or 2. Specify all to remove all SPAN sessions, local to remove all local sessions, or remote to remove all remote SPAN sessions. monitor session session_number source interface interface-id rx Specify the characteristics of the source port (monitored port) and RSPAN session. For session_number, specify 1 or 2. For interface-id, specify the source port to monitor. The interface specified must already be configured as a trunk port. monitor session session_number filter vlan Limit the RSPAN source traffic to specific VLANs. vlan-id [, | -] For session_number, specify 1 or 2. For vlan-id, the range is 1 to 4094; do not enter leading zeros. (Optional) Use a comma (,) to specify a series of VLANs or use a hyphen (-) to specify a range of VLANs. Enter a space after the comma; enter a space before and after the hyphen. monitor session session_number destination remote vlan vlan-id reflector port interface Specify the RSPAN session, the destination remote VLAN, and the reflector port. For session_number, enter 1 or 2. For vlan-id, specify the RSPAN VLAN to carry the monitored traffic to the destination port. For interface, specify the interface that will flood the RSPAN traffic to the RSPAN VLAN. end Return to privileged EXEC mode. show monitor [session session_number] Verify your entries. copy running-config startup-config (Optional) Save your entries in the configuration file. To monitor all VLANs on the trunk port, use the no monitor session session_number filter vlan global configuration command. This example shows how to clear any existing configuration on RSPAN session 2, configure RSPAN session 2 to monitor traffic received on trunk port 4, and send traffic for only VLANs 1 through 5 and 9 to destination remote VLAN 902 with port 8 as the reflector port. Switch(config)# no monitor session 2 Switch(config)# monitor session 2 source interface gigabitethernet0/4 rx Switch(config)# monitor session 2 filter vlan 1 - 5 , 9 Switch(config)# monitor session 2 destination remote vlan 902 reflector-port gigabitethernet0/8 Switch(config)# end 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 21-19