Service-policy output not working in Cisco 3560 switch

rajib_das · ‎08-02-2007

We got some Cisco catalyst 3560 that we want to control the bandwidth

on the ports. Can this be done, and how do i do it?

Ive got 3550s that can do policy-map with the interface command;

service-policy output(and input) <policyname>

But 3560 only seems to handle service-policy input.

If i try to configure output, it says the following:

"

SW(config-if)#service-policy output 4mbit-out

police command is not supported for this interface

Configuration failed!

Warning: Assigning a policy map to the output side of an interface not

supported

"

Any workarounds or new ways to accomplish bandwith-control on a 3560 ?

regards,

Rajib

andrew.butterworth · ‎08-02-2007

The 3560 & 3750 (& 2960) don't support egress policy-maps. They do however support queueing so it is possible to achieve similar results by applying an ingress policer to your user ports to classify (& police?) the traffic, at the egress port you can then queue the traffic based on it's DSCP or CoS value that it was classified with (same as 3550).

It is also possible to restrict the bandwidth in use at an egress port with the interface command 'srr-queue bandwidth limit <10-90>' where 10-90 represents a percentage of the links bandwidth. For example if you want to restrict a 100Mbps port to 10Mbps you would use the command 'srr-queue bandwidth limit 10'

HTH

Andy