The outbound interface is typically an interface that connects to the internet. If a TWCB web cache is configured to an interface, all TCP packets routed out that interface that match the configuration of the web cache will be considered by TWCB for redirection. Within the interface configuration command mode, you can configure this interface to redirect outbound HTTP traffic to the web cache. Multiple web caches can be specified on a single interface. TWCB is supported on VLAN, L3 tunnel interfaces, and on L2 tunnel, including tunnel bridge port.