Global configuration for LAC interoperation using Cisco NAS Port Info AVP
You can globally configure LAC interoperation with a Cisco Systems LNS by specifying the LAC's NAS port method as cisco-avp with the nas-port statement at the [edit services l2tp tunnel] hierarchy level. This causes the LAC to include the Cisco NAS Port Info AVP (100) in the ICRQ messages it sends to the LNS for all tunnels.
In earlier releases, you can configure interoperation only in a tunnel profile, so that it applies only to tunnels instantiated with that profile. The tunnel profile configuration now has precedence over the global configuration. You can override both by including the Tunnel-Nas-Port-Method VSA [26-30] in a RADIUS server configuration that modifies or creates a tunnel profile.