Re: Router-IDs on routing protocols

I would do it for a few reasons

1) It makes your life easier during troubleshooting and debugging (seeing a RID that is very familiar as opposed to some random highest IP address) . Example: "show ip ospf neighbor"

2) Bad things can happen with OSPF should you choose not to. What if you have virtual-links which are of course configured based on RID in OSPF. If the RID is the highest loopback / highest IP address and you happen to add another higher one later and then reload your connectivity back to area 0 can be screwed.

For these reasons I always got in the habit of hard coding them in labs, but do what you are comfortable with

Regards,
Joe Astorino, CCIE #24347

"He not busy being born is busy dying" -- Dylan

----- Original Message -----
From: "Florian Frotzler" <florian_at_frotzler.priv.at>
To: "Cisco certification" <ccielab_at_groupstudy.com>
Sent: Thursday, June 17, 2010 5:33:51 AM GMT -05:00 US/Canada Eastern
Subject: Router-IDs on routing protocols

Hi group,

Is it a good practice in the SP lab to generally configure router-IDs
on all routing protocols even if it is not demanded by the task (and
also not explicitely forbidden of course)? Or does this contradict the
idea of "configure only what is necessary".

Cheers,
Florian

Blogs and organic groups at http://www.ccie.net
Received on Thu Jun 17 2010 - 13:01:02 ART