[PATCH] General protocol route limits

Ondrej Zajicek santiago at crfreenet.org
Thu Nov 17 21:03:07 CET 2011


On Mon, Nov 14, 2011 at 04:40:25PM +0400, Alexander V. Chernikov wrote:
> Hello list!
> 
> At the moment bird has route limits implemented for BGP only (route
> limit XXX).
> 
> This seems to be not enough in various BGP+IGP configurations.
> 
> Vendors implement the following approaches:
> 
> Cisco:
> * warning-only (OSPF, redistribute maximum-prefix) - print warning message
> * withdraw (OSPF, redistribute maximum-prefix) - Prevents additional
> redistribution when the number of routes defined by the maximum argument
> have been redistributed.
> * clear (IS-IS) - clears all redistributed prefixes
> 
> See
> http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fsoredis.htmlfor
> more information
> 
> Juniper:
> * log-only (general, maximum-prefixes) - print warning message only
> * withdraw (general, maximum-prefixes) - any additional routes are rejected
> * clear (OSPF, ISIS, prefix-export-limit) - clear database from all
> extrnal routes
> 
> 
> This patch introduces general limiting functionality for any protocol.

Thanks for the patch, i have some comments to that (some stylistic,
some technical), i will compile them tomorrow.

-- 
Elen sila lumenn' omentielvo

Ondrej 'SanTiago' Zajicek (email: santiago at crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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