QOS on Sub-interfaces & PPP Multilink Interfaces

[alwhitlow]

I am setting up QoS for VoIP on several routers. I have two questions:

1) For PPP multilink interfaces, do I apply the service-policy on the multilink interface or on each of the serial interfaces that are a member of that ppp multilink group?

2) For routers that have sub-interfaces, i.e. router on a stick, is the service policy applied to the physical interface, i.e. f0/0 or the sub-interfaces,i.e. f0/0.5 & f0/0.6?

Thanks in advance for your assistance in this matter!

[pkhatri]

1. On the multilink interface.

2. It's probably best to apply it on the sub-interface but you will need to configure a nested policy so that you can shape per VLAN.

Paresh