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New Member

Service-ploicy, service and class maps. What's impact on router?

Because our IPT is not working fine. Other location has a leased line of 2mb to main office where PBX is. Remote location has 4 vlans. Each entity has 2 vlans namely for voice and data. the LL is divided by 2 (each entity half of capacity) and each part again divided via service-policy, class and policy maps a diffrent priority so voice gets priority and a fixed bandwidht. When we tested in beginnen there were no problems with voice but once up and running (once data also got active)quality of IPT became worse. Now we tried alread a lot (bypassing fw and so on) but jitter remans for IPT. Only thing I stil can think about as cause is: routing (different subnets) or all those maps and policies takes each packet to go through a long proces before being send so causes jitter for IPT. Anybody and advice or experience? Or all those maps slowing down IPT traffic?

New Member

Re: Service-ploicy, service and class maps. What's impact on rou

Try to check for symmetrical routing first. Ensure that the traceroutes between voice device vlans takes the same routing path to and fro as voice is delay sensitive.

Check for taildrops in 'show policy-map int' command

and try to tweak the voice priority/bandwidth.

Enable netflow by 'ip route-cache flow' interface command and check for the flows.