I'd like to mark DSCP in hardware at the remote sites 3750 (12.2(44)SE1) switches instead of at the remote WAN router. It's working fine except for traffic that is generated in the 3750, like SNMP reply's and IP SLA responder traffic - traffic that is actually generated in the 3750. The 3750 will only let me apply a service policy to the inbound direction of a physical interface in a 3750. Any ideas?
This is the IP SLA configuration I have on a Catalyst 3550 to test VoIP:
ip sla 10
udp-jitter 192.168.255.250 32768 source-ip 192.168.255.254 source-port 32768 codec g711alaw
The 'tos' setting sets the whole ToS byte, so in this case it sets DSCP EF (101110 + 00).