Bandwidth/Router Tuneup

ttrotter01@yahoo.com · Guest

I have a customer with a 3640 with (4) 3640 router network utilizing a
fully meshed VPN network for voice (analog input) and data between the
sites on ADSL. They are needing a tuneup and are wanting to designate
bandwidth for business traffic, and designate bandwidth for voice
traffic. How do I go about doing this? Thanks.

Merv · Guest

Read up on LLQ and CBWFQ

see Cisco document "Low Latency Queueing with Priority Percentage
Support"

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a0080087af0.html

as a starting point

Mark Williams · Guest

This may be tougher than it seems at first. Configuring Class-Based
Weighted Fair Queueing (CBWFQ) won't do much good, because by the time
the traffic leaves the router to go over the Internet, it has already
been encapsulated and encrypted.

You could implement traffic policing at the ingress interfaces on your
router to rate-limit down data traffic as it enters the router. You'd
have the go with policing because it's the only kind of QoS policy that
can be applied inbound to an interface.

Alternatively, you could deploy two routers at each site. One to
connect the various data and voice networks together and perform QoS
operations, and the other to connect to the VPN.

This is a good place to start

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/index.htm

The link below expains the difference between shaping and policing
well:

http://www.cisco.com/warp/public/105/policevsshape.html