of course you can use ip precedence for QoS. ip precedence is used to specify the importance of one traffic and enable the appropriate policies for it. but on your side, i'm not quite sure on how you would use the ip precedence set by the customer on their packets going to your side. i think it only implies that whenever a packet with this precedence enters your interface, it should be given this treatment (precedence 5 should be processed first before the other). and besides, precedence should be enabled near the source, and the traffic is inbound to you, and you wanted to do QoS outbound. I think you should to your own marking on your router (or your switch), and enable QoS outbound if this is the case.
If your router is the transit router for voice and data (your router connects to remote routers that have voip applications)you can match the ip precedence set by the customer and apply your QoS outbound to the other side, and vice verza. I think this is what you wanted to do. example: class-map match-all class1 match input-interface serial 0 match ip prece 5 (for voice) class-map match-all class2 match input-interface serial 0 match ip prece 0 class-map match-all class3 match input-interface serial 1 match ip prec 5 (for voice) class-map match-all class4 match input-interface serial 1 match ip prec 0 policy-map 1 class class1 priority 128 (you should do priority command for VoIP - answered?) class class2 bandwidth 64 (for data, you can do the bandwidth command) class class-default fair-queue policy-map 2 class class3 priority 128 class class4 bandwidth 256 class class-default fair-queue interface s0 service-policy out 1 (for the other side) interface s1 service-policy out 2 (and for the other csr side) priority command strictly specifies that this application must get this BW, above that it is clipped. bandwidth command specifies that during congestion, this application should use this minimum guaranteed BW. you can use this for data, because tcp is reactive to congestion, and voice, w/c uses udp, is not. for the other question, regarding the allocated 25% for the other services, cisco thinks this is fine, because if you won't specify that, other FR or ATM traffic (like keepalives) would be blocked. it is sort of you loose BW for your data, but is for a good reason. I can't remember the command if there's any for your purpose. maybe u could consult cisco tac for that. hope that helps :) Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=59168&t=58784 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
