Something to watch out for...
Not sure how many ISPs in the region run with full routing, but...
Regards,
-drc
------- Forwarded Message
Date: Mon, 30 Dec 1996 22:28:15 -0600
From: Jeremy Porter <jerry at fc dot net>
To: Paul Ferguson <pferguso@Cisco.COM>
cc: nanog at merit dot edu
Subject: Re: Film at 11:00
In message <3.0.32.19961230154408.00691d90 at lint dot cisco dot com>, Paul Ferguson write
s:
>Looks like the 45k mark was reached:
>
>Table History
>
>
>Date Prefixes
>231296 43352
>241296 44089
>251296 43735
>261296 43391
>271296 43093
>281296 43912
>291296 45352
>301296 45532
I would like to note, that at 45,000+ prefixes even with
prefix length filters dropping that down to 37,000 prefixes
a 16Meg cisco router can no longer hold a reasonable table.
It might be ok if people ran flap dampening at their boarders,
but with several flaps per second per provider, and the extra
memory and cpu used by dampening and filter-lists,
those old 68030s can't cut it.
For those people that still have "full routes" going into
2500 series routers, i.e. smaller dual attached providers, you'd
better keep an eye out for your BGP sessions to start randomly
dropping as you run out of memory. (Oh and if this happens enough
Sprint and Digex will dampen your prefixes, and possible others...)
- ---
Jeremy Porter, Freeside Communications, Inc. jerry at fc dot net
PO BOX 80315 Austin, Tx 78708 | 1-800-968-8750 | 512-458-9810
http://www.fc.net
------- End of Forwarded Message
