On Thu, Dec 15, 2005 at 07:34:56PM -0800, David Meyer wrote:
On Fri, Dec 16, 2005 at 03:29:29AM +0000, Christopher L. Morrow wrote:
On Thu, 15 Dec 2005, John Kristoff wrote:
On Thu, 15 Dec 2005 19:15:49 -0500 (EST) Sean Donelan <sean@donelan.com> wrote:
AT&T, Global Crossing, Level3, MCI, Savvis, Sprint, etc have sold QOS services for years. Level3 says 20% of the traffic over its
What do they mean by QoS? Is it IntServ, DiffServ, PVCs, the law of
I think also mostly this applies to private network things as well... which mostly ends up being: "backups get 20% of the pipe and oracle-forms gets 70%" (or some variation on that mix... what with 8 queues or whatever on the private network you can just go to town :) )
Speaking to MCI's offering on the public network it's (not sold much) just qos on the end link to the customer... It's supposed to help VOIP or other jitter prone things behave 'better'. I'm not sure that we do much in the way of qos towards the customer aside from respecting the bits on the packets that arrive (no remarking as I recall). So, what does this get you aside from 'feeling better' ?
averages or something else? I've had to deploy it on a campus network and in doing so it seems like I've tread into territory where few if any big networks are to be found. Nortel apparently removed DiffServ
most large networks (as was said a few times I think) don't really need it in their cores. I think I've seen a nice presentation regarding the queuing delay induced on 'large pipe' networks, basically showing that qos is pointless if your links are +ds3 and not 100% full. Someone might have a pointer handy for that?
You might check slides 35-38 in http://www.1-4-5.net/~dmm/sprintlink_and_mpls.ppt Dave