How do I mark VLC streams with proper DSCP markings

[Tod Larson]

I have a server using VLC to stream h264 video and mpeg4 audio to a multicast address.  VLC doesn't seem to mark the packets at all.  What can I filter on in an access-list to mark all that audio/video traffic as something appropriate such as af42?  I tried an access list that matches everything from that IP address... but that marks way to much traffic.

Thank you,

Tod

[Aaron Harrison]

Hi

You could use NBAR (match procotol rtp in the class-map):

http://www.cisco.com/en/US/products/ps6616/products_white_paper09186a0080110040.shtml

Or since you have control of the server use the target mcast address in an ACL.

Regards

Aaron

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[Tod Larson]

Thanks.  We just used an access list to match all traffic destined for the multicast address.    It's working perfectly.