Details operational modes and considerations for loopback TLOC interfaces not bound to physical WAN interfaces, highlighting network behavior and deployment scenarios.
When a loopback interface is a TLOC, and is not bound to a physical WAN interface, implicit ACL rules are applied based on where the traffic is destined for:
-
If the traffic that is destined for the loopback TLOC interface is received on a physical WAN interface, implicit ACL rules of the loopback TLOC are applied.
-
If the traffic is not destined for the loopback TLOC interface, depending on whether the input physical WAN interface is configured for TLOC or not, the following rules apply:
-
If the physical WAN interface is not configured for TLOC, then routing decisions apply.
-
If the physical WAN interface is configured for TLOC, the configured implicit ACL rules apply.
-