I have a device in our network that does not have the ability to change the IP precedence of the traffic it generates. I wanted to set the IP precedence to critical for that device and implemented a policy map on the router it connects to, a 7513 with an RSP4. This device is a Cisco 3510 MCU video conferencing unit and I'm wondering if I may be creating one problem by solving another. here's what I mean... WFQ by default will look at the IP precedence of a flow when deciding how to queue it, but queueing only happens when the interface is congested. With the policy map I have configured, it has to process every packet in that flow regardless of congestion. My question really is how much latency would processing like this add? In this scenario, do the negatives outweigh the positives? To be honest, I haven't noticed much of a difference but I've been working with TAC to resolve some performance issues with the 3510 so we've been trying a lot of different things including playing around the QoS. One engineer suggested I use "ip rtp priority" on the outgoing interfaces but another engineer wants me to remove that and use this policy map with WFQ. ugh..... It's like being pecked to death by bunch of chickens! Anyway, I was just wondering if any of you had any insight into the performance hit that this type of policy map might produce. Thanks for putting up with my rambling.... John Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=967&t=967 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
