[74225] in North American Network Operators' Group
Re: BGP Load Sharing
daemon@ATHENA.MIT.EDU (Matthew Crocker)
Sat Sep 18 11:19:08 2004
In-Reply-To: <414C35F1.3020207@liquidweb.com>
Cc: nanog@merit.edu, mmcspedon@arrow.com
From: Matthew Crocker <matthew@crocker.com>
Date: Sat, 18 Sep 2004 11:17:25 -0400
To: Chris Strandt <strandtc@liquidweb.com>
Errors-To: owner-nanog-outgoing@merit.edu
> So back to the question at hand... to get netflow stats for outgoing
> traffic.. we need cards in the 12K router which will support netflow
> on the ingress ports of the router for outgoing traffic(ie Gigabit
> Ethernet Line Cards)... right?
>
Correct, NetFlow is generated when the packet enters the router.
you'll need Engine 3 or 4 cards on your ingress ports (GigE I assume
for outbound traffic) in order to do line rate with full Netflow.
Engine 0 & 1 cards can do sampled netflow which *may* be enough for
your load balancing needs.
-Matt
