[95032] in North American Network Operators' Group
Re: Do routers prioritize control traffic?
daemon@ATHENA.MIT.EDU (Stephen Sprunk)
Sun Feb 18 01:06:46 2007
From: "Stephen Sprunk" <stephen@sprunk.org>
To: "Christos Papadopoulos" <christos@CS.ColoState.EDU>
Cc: "North American Noise and Off-topic Gripes" <nanog@merit.edu>
Date: Sat, 17 Feb 2007 23:34:53 -0600
Errors-To: owner-nanog@merit.edu
Thus spake "Christos Papadopoulos" <christos@CS.ColoState.EDU>
> I know routers today have the ability to prioritize traffic, but last I
> heard,
> these controls are not often used for user traffic (let's not discuss
> net neutrality here).
They're not often used on _public_ networks for user traffic. They're used
extensively on _private_ networks, though, because the people paying the
bills for network do so for a particular business purpose and they want to
make sure it's met.
> Are they used for control (e.g., routing) traffic?
Many routers automatically put control traffic to/from the local node into a
separate path that completely bypasses the standard queueing mechanisms (and
predates operator-accessible QOS). In other routers, the control plane and
forwarding plane are segregated, which achieves the same goal but with a
rather different approach.
S
Stephen Sprunk "Those people who think they know everything
CCIE #3723 are a great annoyance to those of us who do."
K5SSS --Isaac Asimov
