Police bandwidth depending on destination

[cjdunford]

Hi, I have several 3550 switches which I am using to limit the bandwidth of users. I would like to have a policy to limit bandwidth to 5M down, 1M up when going off net, and limit it to 30M up/down when going on net. How would this be accomplished?

Thanks

[keithpalka]

When you say "going on/off net", are you referring to users exiting your LAN to the WAN and vice versa via a router or are you referring to strictly LAN/L2 traffic moving inbetween different portions of your LAN?

[cjdunford]

on net would be anything to a 10.x.x.x network. off net would be anything else.

[keithpalka]

Well, you can match specific traffic with ACL's, define the bandwidth limitations with by defining the QoS policer with burst limits and exceed actions, define the traffic classes and group your matched traffic in these, then define a policy-map and attach the policer to the traffic classes. Once that's done, apply it to an interface in an inbound/outbound direction. The big thing here will be how you decided to mark your traffic, be it source/destination IP, DSCP/CoS markings, source/destination port #'s, etc. Here's a link to a couple articles that should help you out.

http://www.cisco.com/warp/public/473/187.html

http://www.cisco.com/en/US/products/hw/switches/ps646/products_tech_note09186a00800feff5.shtml