Header modification actions are performed as specified at ingress and egress.
Based on configuration settings in the route-map or the Access Control List (ACL), when the application receives a packet, it evaluates the packet against the settings, and performs the appropriate actions. Ingress policy actions are applied before the egress policy actions.
Header-modification actions include tag stripping, tag addition, and decapsulation. You specify header-modification actions in a listener policy, which is bound to an egress policy and refers to ACLs and packet-modification settings.
