ASA: OSPF Path Selection RFC1583 or 2328?

[Rolf Fischer]

Hi,

I've been searching for this information but didn't find anything so far.

Among other things, with RFC 2328 the way to determine the prefered path has been changed.

However, per default Cisco IOS platforms still use the RFC 1583 mechanisms for compatibility reasons.

NX-OS, in contrast, use the RCF 2338 specifications per default.

The recommendation is to use the same method within an OSPF domain. Otherwise, at the worst, routing loops could occur.

I know that our routers and multilayer switches run RFC 1583 compatible mode but I'm not sure about our ASAs.

Can anybody confirm (if possible a reference would be desirable)?

Thanks,

Rolf      

[Marvin Rhoads · Accepted solution]

RFC 1583 mode is the default on ASA. You can switch to RFC 2328 with the command "no compatible rfc1583".

Command Reference

Configuration Example

The configuration example states it most clearly - see the notes under the advanced properties figure.