[84635] in North American Network Operators' Group
Re: PBR needing to hit the cpu?
daemon@ATHENA.MIT.EDU (Tony Li)
Mon Sep 19 02:39:10 2005
In-Reply-To: <Pine.LNX.4.61.0509190735450.26071@london.openu.ac.il>
Cc: David Hubbard <dhubbard@dino.hostasaurus.com>,
North American Noise and Off-topic Gripes <nanog@merit.edu>
From: Tony Li <tony.li@tony.li>
Date: Sun, 18 Sep 2005 23:38:41 -0700
To: rafi-nanog@meron.openu.ac.il
Errors-To: owner-nanog@merit.edu
>> That's not at all surprising. PBR would be pretty hard to push
>> into a hardware forwarding path.
>> Not impossible, but certainly challenging.
>>
>
> Doesn't the SUP-720(PFC3B) support (some forms of) PBR in hardware ?
>
As has been pointed out to me privately, the SUP-720 does flow cache
PBR support. Now, if you consider a flow cache to be acceptable
performance, and the flow descriptor fits within the policies that
you wanna write and you fit within the performance boundaries of a
SUP-720, well, that may be a suitable solution.
Tony
