From: James (james@towardex.com)
Date: Mon Oct 04 2004 - 20:02:11 GMT-3
On Mon, Oct 04, 2004 at 03:45:41PM -0700, Larry Metzger wrote:
> It is true that the loopback will be chosen over physical interfaces
> (and if properly chosen would be stable). My thought on setting the
> router-id manually is to prevent another interface with a higher address
> from causing the router to change ID after a reload. Obviously this
> wouldn't occur in production but could be an issue on an exam that later
> wants a BGP route set-up with a new loopback address.
Yes, loopback interface is chosen over physicals.
However, applying the murphy's law in networking, there are sometimes and
in my case, there had been, cases where loopback was not chosen by a bug
or an accident of some sort. Therefore, I always manually configure
router-id to be the loopback addr regardless, in production environment.
-J
-- James Jun TowardEX Technologies, Inc. Technical Lead Network Design, Consulting, IT Outsourcing james@towardex.com Boston-based Colocation & Bandwidth Services cell: 1(978)-394-2867 web: http://www.towardex.com , noc: www.twdx.net
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