I would like to know how to configure QoS in a layer 2 network using the user priority bits in the 802.1q VLAN tag. Any comments or document references would be great.

In the dynamic ordering tool for the 7600, I can not find the card: Cisco 7600 Series 4- & 8-Port OC-3c/STM-1 POS Enhanced Optical Services Module. Do you know why?

Can the 7206 be used as a MPLS PE router? I don't think it is common but is it effective?

I'm installing a firewall for a WISP and am trying to find a list of limitations of using PAT on the PIX525. The safe decision is NAT however, many public IP's are needed. If I choose PAT, how am I limiting Internet access?