You can attach a policy list (other than a policy-based routing list) to every interface on the Branch Gateway using one command. To do this, attach a list to the Loopback 1 interface. For more information, see Policy list attachments.
Note:
If you attach a policy list to a Loopback interface other than Loopback 1, the policy list has no effect.
When you attach a policy list to the Loopback 1 interface, thereby creating a device-wide policy list, and you also attach policy lists to specific interfaces, the Branch Gateway applies the lists in the following order:
Incoming packets:
Apply the ingress policy lists that are attached to the interface
Apply the device-wide ingress policy lists
Outgoing packets:
Apply the device-wide egress policy lists
Apply the egress policy lists that are attached to the interface
