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6500 VSS policy-maps and classification

AJ Schroeder
Level 1
Level 1

Hello group,

Another QoS related question, this time it deals with a 6500 running VSS with IOS 12.2(33)SXI3. I have a policy map that is applied to a physical interface that is looking for UDP video traffic and marking it as AF41. After applying the service-policy to the physical interface I look at the policy-map and I see matches on the interface like it is marking, but a sniff tells me otherwise. This is the almost the exact opposite of the 3750 problem that I was seeing in this bug report: http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCec08205

I have been doing some reading and I know that VSS does QoS differently across the VSL (i.e. COS only, unchangeable COS to DSCP mappings) but does that matter on physical ethernet ports for servers and uplinks to other switches?

Below is the config from the VSS switch. For the record I have tried QoS on the VLAN as well and no such luck.

ip access-list extended SXDMSWMS1-Multicast
permit udp host 10.255.2.228 any eq 25385
permit udp host 10.255.2.228 any eq 30657
ip access-list extended SXDMSWMS2-Multicast
permit udp host 10.255.2.200 any eq 25385
permit udp host 10.255.2.200 any eq 30657

!

class-map match-any SXDMSWMS-Multicast-cmap
  match access-group name SXDMSWMS1-Multicast
  match access-group name SXDMSWMS2-Multicast

policy-map QoS-Policy-Cisco-DMS
  class SXDMSWMS-Multicast-cmap
   set dscp af41

!

interface GigabitEthernet1/1/31
description SXDMSWMS2
switchport
switchport access vlan 3098
switchport mode access
mls qos trust dscp
spanning-tree portfast edge
service-policy input QoS-Policy-Cisco-DMS

Hopefully someone can tell me where I'm going wrong.

Thank you,

AJ Schroeder