nanog mailing list archives
Re: Cisco 7600 (7609) as a core BGP router.
From: Roland Dobbins <rdobbins () arbor net>
Date: Sat, 18 Jul 2009 17:26:52 +0700
On Jul 18, 2009, at 5:05 PM, Darren Bolding wrote:
Can someone provide a link, or more detail, on the netflow issues. Particularly as they relate to 6509's and sup720's.
mls table can hold 256K entries at 93% efficiency, so you end up with about 239K flows total. No packet-sampled control of flow creation, so the table is likely to be overflowed in production edge situations, leading to non-deterministically skewed stats.
No logical OR of TCP flags throughout a TCP flow - can't classify SYN- floods, RST-floods, et. al.
No stats on dropped traffic. ----------------------------------------------------------------------- Roland Dobbins <rdobbins () arbor net> // <http://www.arbornetworks.com> Unfortunately, inefficiency scales really well. -- Kevin Lawton
Current thread:
- Re: Cisco 7600 (7609) as a core BGP router., (continued)
- Re: Cisco 7600 (7609) as a core BGP router. Roland Dobbins (Jul 17)
- Re: Cisco 7600 (7609) as a core BGP router. Richard A Steenbergen (Jul 18)
- Re: Cisco 7600 (7609) as a core BGP router. Roland Dobbins (Jul 17)
- RE: Cisco 7600 (7609) as a core BGP router. Bailey Stephen (Jul 20)
- Re: Cisco 7600 (7609) as a core BGP router. Richard A Steenbergen (Jul 20)
- Re: Cisco 7600 (7609) as a core BGP router. Brandon Galbraith (Jul 20)
- Re: Cisco 7600 (7609) as a core BGP router. Tony Varriale (Jul 20)
- Re: Cisco 7600 (7609) as a core BGP router. Richard A Steenbergen (Jul 20)
- Re: Cisco 7600 (7609) as a core BGP router. deleskie (Jul 17)
- Re: Cisco 7600 (7609) as a core BGP router. Saku Ytti (Jul 18)
- Re: Cisco 7600 (7609) as a core BGP router. Roland Dobbins (Jul 18)
- Re: Cisco 7600 (7609) as a core BGP router. Darren Bolding (Jul 18)
- Re: Cisco 7600 (7609) as a core BGP router. Roland Dobbins (Jul 18)
- Re: Cisco 7600 (7609) as a core BGP router. Roland Dobbins (Jul 18)
- Re: Cisco 7600 (7609) as a core BGP router. Richard A Steenbergen (Jul 18)
- Message not available
- What Platform for a small ISP (was: Cisco 7600 (7609) as a core BGP router) R. Benjamin Kessler (Jul 22)
- Re: What Platform for a small ISP (was: Cisco 7600 (7609) as a core BGP router) Jim Wininger (Jul 22)
- Re: What Platform for a small ISP (was: Cisco 7600 (7609) as a core BGP router) Manu Chao (Jul 22)
- RE: What Platform for a small ISP (was: Cisco 7600 (7609) as a core BGP router) R. Benjamin Kessler (Jul 22)
- Re: What Platform for a small ISP (was: Cisco 7600 (7609) as a core BGP router) David Storandt (Jul 22)
- Re: Cisco 7600 (7609) as a core BGP router. Saku Ytti (Jul 18)
- Re: What Platform for a small ISP (was: Cisco 7600 (7609) as a core BGP router) Richard A Steenbergen (Jul 22)
- Re: Cisco 7600 (7609) as a core BGP router. Saku Ytti (Jul 18)