[c-nsp] QoS and VLAN

[Jay Nakamura]

We have several customers coming in on Ethernet.  They are connected
to L2 switch and trunked into a 7500 router via VLAN.  This has worked
fine so far with the use of rate-limit on the sub-interface.  Most
customers have 5~10mbps.

However, we are increasingly needing QoS so VoIP traffic does not drop
when data traffic bursts.  Only work around I know how to do is to
give separate rate-limit based on IP address since most of the time
VoIP has separate gateway on the customer side than the data firewall.

Classification of the traffic is not a problem.  The issue is, how do
you give VoIP traffic priority over data traffic on a Ethernet
sub-interface?

Is there a good way to implement this on a 7500?  If not, what Cisco
hardware will work?  We are on a tight budget and the number of
clients are small.  (dozen or so)  Would going with L3 switch be
better?  If so, what model?

Thanks!