QoS not classifying anything 2

[insureme]

I'm trying to configure QOS on our 3750 switches to prioritize VOIP and teleconference traffic between our two sites across a Metro Ethernet Mesh. I thought i was understanding this but i seem to be hitting some fundamental part of this process that I'm either missing entirely, or misunderstanding. my configuration is as follows.

mls qos
class-map qos
match access-list name qos1

policy-map qos
class qos
set dscp cs5

ip access-list ext qos1
10 permit ip 172.16.0.0 0.0.255.255 any <--VOIP device range
20 permit ip host 172.17.1.25 any <--vid/conf device
30 deny ip any any <-- i like to add this so i can see what hits it

int g1/0/2
service-policy input qos
no switchport
ip address x.x.x.x x.x.x.x

the above interface is my metro mesh port. what i'm finding is nothing is getting classified, and i'm not sure why. should i be applying the qos service policy to all the ports except the WAN port? any ideas would be greatly appreciated as i've been pouring over every QOS setup doc i' ve been able to find.

if i issue a "show policy-map int g1/0/2" it reveals that nothing have been classified. if i do a show ip access-lists i can see that only the deny statement on the ACL shows any hits. i know the traffic i'm specifying is there though.

Thanks,

 

[dgrizzard]

1) There are 4 egress queues in a 3750, by default they are 25% a piece, unless you change something. (there are 2 queue-sets though, think of those as templates, by default all ports are in queue-set 1, which inside of that queue-set has a setting for 25% for each queue of the 4 queues)

2) About classifications, 0 and 5 as you said you expect, there must be some other traffic being marked as 4 somewhere, and 6 or 7 is used by network protocols

3) If you use the bandwidth command on your WAN port it the switch will use that amount for calculating the QoS and not the 1Gbps port amount.

 

[insureme]

that makes sense. the other classifications, at least the one i remember off the top of my head was EIGRP traffic. however, i'm seeing the traffic that i'm trying to manage being set to 4 only from one of the switches, and only sometimes. the rest of the time it's set to 5 as it should be. the other switch seems to be classifying correctly all the time. i'll go ahead and set the bandwidth parameter on my two WAN ports, and see if that improves things, but i guess i'll have to dig through my configuration a little harder to see if something is set somewhere else to cause that misclassification.