I've been asked to prioritize VoIP traffic for a customer that uses a private wireless network managed by another contractor for transport from the remote sites to headquarters. All VoIP traffic enters the network from 1711s at the remote sites (interface Fa2, VLAN 10). If I classify these packets, apparently the transport folks will offer expedited forwarding.
Is the best way to accomplish this by setting diffserve to ef for these packets?
Once these packets arrive at HQ, will all the Cisco routers and switches automatically prioritize these packets or do I need to configure PBR on every device in the path for expedited forwarding?
Is it advisable to segment packets from competing streams to reduce latency? If so, can this be accomplished by simply setting MTU to something in, say, the 200 - 300 Byte range?