Symptom

When lcp AV pairs such as the following are pushed by radius, an error message is displayed and the session keeps flapping: Cisco-AVPair += "lcp:interface-config=ip unnumbered loopback 100", Cisco-AVPair += "lcp:interface-config=ip vrf forwarding test", Error message: *Dec 27 14:13:11.280: %FMANRP_ESS-4-FULLVAI: Session creation failed due to Full Virtual-Access Interfaces not being supported. Check that all applied Virtual-Template and RADIUS features support Virtual-Access sub-interfaces. swidb= 0x7F82419F2490, ifnum= 33

Conditions

ASR1002-HX running Polaris 16.5.2 using lcp AV pairs

Workaround

Use ip based AV pairs instead of lcp based. This will trigger the use of VA sub-interfaces instead for memory scalability: Cisco-AVPair += "ip:ip-unnumbered=Loopback100", Cisco-AVPair += "ip:vrf-id=test", Cisco-AVPair += "ip:addr-pool=COOL",

Further Problem Description