[155922] in North American Network Operators' Group

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Re: Level 3 BGP Advertisements

daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Thu Aug 30 16:05:09 2012

Date: Thu, 30 Aug 2012 22:04:33 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Blake Hudson <blake@ispn.net>
In-Reply-To: <503FB601.80705@ispn.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On Thu, 30 Aug 2012, Blake Hudson wrote:

> these OS's simply enforce classful boundaries regardless of the subnet mask 
> you have set. As the KB states, this "bug" affects supernets only. I'm not 
> trying to defend MS (they can do that themselves), but your statement was 
> misleading.

Just for kicks, I tried using a .0.0/16 and .255.255/16 adress for stuff 
in IOS (configured it as loopback and tried to establish bgp sessions 
etc), that didn't work so well. I don't remember exactly what the problem 
was, but I did indeed run into problems.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se


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