Thanks again Phil. Cheers,
-Aaron -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Phil Mayers Sent: Thursday, 3 March 2011 6:34 PM To: [email protected] Subject: Re: [c-nsp] ingress vs egress queues On 03/03/2011 03:30 AM, Aaron Riemer wrote: > Hey guys, > > > > Can someone please explain to me the difference between ingress and egress > queues on catalyst switches? Ingress queues are more or less useless[1], since most Catalyst switches have non-blocking (or nearly so) fabric/interconnects. Egress queues are useful, for all the "normal" reasons. > > > > I always thought Ingress was traffic coming 'in' to the switch port from a > device and egress traffic coming out of the port but I don't think this is > correct? You were right. Ingress/Egress are from the perspective of the switch. > > > > Does a packet first go through the ingress queue and then to the egress > queue before it is 'switched'. Yes > > > > I have been trying to find some good documentation to aid my understanding > in this area. If anyone could help me out with this it would be greatly > appreciated. The QoS SRND is useful for background info on Catalyst QoS. Other links have been posted to the list fairly recently - have a look at the archives. Regards, Phil [1] If you believe the explanation in the QoS SRND, which I find reasonably convincing. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
