[83421] in North American Network Operators' Group
Re: DSL Network Design Question
daemon@ATHENA.MIT.EDU (Jon Lewis)
Sun Aug 14 11:14:32 2005
Date: Sun, 14 Aug 2005 11:14:05 -0400 (EDT)
From: Jon Lewis <jlewis@lewis.org>
To: nanog@merit.edu
In-Reply-To: <87slxc36s8.fsf@valhalla.seastrom.com>
Errors-To: owner-nanog@merit.edu
On Sun, 14 Aug 2005, Robert E.Seastrom wrote:
> Peter Dambier is right that his ISP is avoiding .255 and .0. Older MS
> stacks (still plenty prevalent in the wild) get indigestion when
> handed those final octets, notwithstanding the fact that they aren't
> broadcast addresses on any network larger than a /24 or for one-ended
> use like PPP... if you don't exclude them you'll end up putting
> additional load on your help desk.
Believe it or not, even not too old (12.1T) IOS versions have issues
forwarding packets to .255 addresses.
----------------------------------------------------------------------
Jon Lewis | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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