Trying to mark traffic to/from L4 rules in the ACE.
Documentation (like always) says it's really easy. Mark traffic by using the "set ip tos <value>" command in Policy/Class configuration. Ok, so I do this, set ip tos 24.
Enable qos globally on the 6500 host, but don't see the traffic being marked.
sh mls qos says that packets are being modified by module 5 (ACE)
But I never see the tos value in any of my captures either via netflow from the host 6500, or at the firewall one hop away.
sh mls qos:
QoS is enabled globally
Policy marking depends on port_trust
QoS ip packet dscp rewrite enabled globally
Input mode for GRE Tunnel is Pipe mode
Input mode for MPLS is Pipe mode
QoS Trust state is CoS on the following interface:
QoS Trust state is DSCP on the following interface:
Vlan or Portchannel(Multi-Earl) policies supported: Yes
Egress policies supported: Yes
----- Module  -----
QoS global counters:
Total packets: 207147888661
IP shortcut packets: 0
Packets dropped by policing: 0
IP packets with TOS changed by policing: 2663386
IP packets with COS changed by policing: 4889352
Non-IP packets with COS changed by policing: 0
MPLS packets with EXP changed by policing: 0
Can someone explain to me what I've got wrong here? Is the ACE simply marking traffic destined for the servers behind it and not the return traffic? Am I missunderstanding something?