Match ip rtp is not supported for this interface

Sep 21, 2007 1 Replies

Hi All,



Just wondering if any one could give me a hand. I'm trying to 'Mark" VoIP traffic on the out bound interfaces on a Cisco 6509 and a 4507. Based on what I have read, the recommend why to Mark VoIP traffic on a router is with this command:



class-map match-any MarkRealTime match ip rtp 16384 16383



policy-map MARKING class MarkRealTime set dscp ef



This works great for routers such as 7206 or 2811, but with a 6509 (switch) I get an error stating "Match ip rtp is not supported for this interface" and the 4507 (switch) doesn't support the command at all. Any ideas on either an alternative method that will work or a work around. The interfaces I'm trying to use are standard routing Gig interfaces.



Thanks


Marc



On the 6509 (not sure on the 4507, but probably the same) you must mark the traffic with a "service-policy" on the INBOUND interfaces. Yeah it makes more sense to do this on the outbound VLAN, but on the 6509 this is done at layer 2 by the PFC.

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