[28848] in North American Network Operators' Group

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Re: IGPs and services?

daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Fri May 19 10:58:52 2000

Message-Id: <200005191456.e4JEuTn25870@black-ice.cc.vt.edu>
To: Brandon Ross <bross@netrail.net>
Cc: nanog@merit.edu
In-reply-to: Your message of "Thu, 18 May 2000 20:39:46 EDT."
             <Pine.LNX.3.96.1000518203749.839G-100000@ogre.atl.netrail.net> 
From: Valdis.Kletnieks@vt.edu
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Fri, 19 May 2000 10:56:29 -0400
Errors-To: owner-nanog-outgoing@merit.edu


On Thu, 18 May 2000 20:39:46 EDT, Brandon Ross <bross@netrail.net>  said:
> What platform adds static routes in response to PMTU discovery?  I've
> never seen that before.  What purpose does it serve to add statics?  Some
> kind of caching of MTU per destination?

Exactly.  AIX 4.3 uses a host route to cache the discovered PMTU.  I got
surprised in 4.3.3 when PMTU discovery became the default...

What systems DONT use a host route to cache the PMTU, and what do they use
instead to store the values?

-- 
				Valdis Kletnieks
				Operating Systems Analyst
				Virginia Tech



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