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Cisco 7600 (7609) as a core BGP router.
- Subject: Cisco 7600 (7609) as a core BGP router.
- From: rdobbins at arbor.net (Roland Dobbins)
- Date: Sat, 18 Jul 2009 17:26:52 +0700
- In-reply-to: <[email protected]>
- References: <432127307-1247893988-cardhu_decombobulator_blackberry.rim.net-597624902-@bxe1156.bisx.prod.on.blackberry> <[email protected]> <[email protected]> <[email protected]>
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.
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Roland Dobbins <rdobbins at arbor.net> // <http://www.arbornetworks.com>
Unfortunately, inefficiency scales really well.
-- Kevin Lawton