Cat 4500 QoS policing user edge traffic

Unanswered Question
Aug 14th, 2008
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I dont want to trust DSCP values from user/phones and instead want to apply a service-policy to classify and police traffic to 128K voice, 32K signalling, and so on. To do this is easy enough, something like:


policy-map User-Edge-Policy

class VVLAN-VoIPTel

set ip dscp ef

police 128000 8000 exceed-action drop

class DVLAN-VoIPTel

set ip dscp ef

police 128000 8000 exceed-action drop

class VVLAN-RealTimeInt

set ip dscp cs4

police 5000000 8000 exceed-action drop



But as you can see I also want to classify and police video. As the video is also a UDP/RTP port stream like voice, how can I differentiate it?


I have tried an extended ACL that matches on already set DSCP values, but that seems to work only on a 3750, e.g:


permit udp 172.16.0.0 0.0.255.255 any range 16384 32767 dscp ef


But this didnt seem to work on the 4500, as I dont think it can see the DSCP markings (different order of operation I think). So any alternatives for the 4500?

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