[86134] in North American Network Operators' Group
Re: Level 3 RFO
daemon@ATHENA.MIT.EDU (Florian Weimer)
Mon Oct 24 07:27:08 2005
From: Florian Weimer <fw@deneb.enyo.de>
To: nanog@merit.edu
Date: Mon, 24 Oct 2005 13:25:23 +0200
In-Reply-To: <20051023203224.GB1146@srv01.cluenet.de> (Daniel Roesen's message
of "Sun, 23 Oct 2005 22:32:24 +0200")
Errors-To: owner-nanog@merit.edu
* Daniel Roesen:
> On Sun, Oct 23, 2005 at 09:48:58PM +0200, Florian Weimer wrote:
>> This isn't the first time this has happened to an ISP. 8-(
>
> Indeed.
>
>> Are there any configuration tweaks which can locally confine such an
>> event? Something like the hard prefix limit for BGP, perhaps.
>
> JunOS:
> set protocols ospf prefix-export-limit <n>
> set protocols isis level <n> prefix-export-limit <n>
Wouldn't an import limit be better? If you've got a
almost-fully-meshed MPLS core, export limits won't really work, will
they?
In more traditional networks, I can imagine that it helps to confine
anomalies. Has anybody tried that on a real network? 8-)
