ASA loopback

[Csco12071985]

Hey all,

Can someone please explain me why does cisco firewall doesnt have a loopback interface while other vendors loke palo alto,F5 and juniper does have.

Thanks .

[Marvin Rhoads]

Only the product team could definitively answer "why" but the ASA doesn't suffer for lack of a loopback interface. If you want an "always on" management interface it has the dedicated interface(s) for that.

[Csco12071985]

So if i want to work with ospf, the router id will be determined by the manegment interface?

[Marvin Rhoads]

For OSPF on an ASA, it's much like an IOS router with respect to router-id. That is, the ASA will use either the highest numbered interface address by default or whatever router-id you specify (my preferred method) using the "router-id" command under the "router ospf" section. In the ASDM GUI it's set under "Configuration, Device Setup, Routing, OSPF, Setup, Advanced"