Configuring an IOS-Based Switch for RSPAN

The process is different for source and destination switches. Intermediary switches do not need any additional configuration provided that trunking infrastructure is already in place.

A RSPAN VLAN is created first. This is done by creating a VLAN and then using the command remote-span in the config-vlan mode to specify that this VLAN is for Remote SPAN. For example:

R4000(config)# vlan 123
R4000(config-vlan)# remote-span
R4000(config-vlan)# end

configures a VLAN 123 for RSPAN. The command no remote-span turns off the RSPAN feature on this VLAN. This command is entered only on one switch and the knowledge about this VLAN is propagated using VTP to all other participating switches