[c-nsp] Catalyst 3550 bandwidth limit per vlan

[Per Carlson]

Alain Cocconi wrote:
> 
> I'm searching how to limit bandwidth on a vlan subinterface in a C3550, I 
> know hos to do it with router, but this is not working for the catalyst (it 
> say thats policy is not permit on suninterface).
> Does anyone knows how to do it ?

Depends on what are you trying to achieve:

Yes, you can attach a policer for a specific Vlan on a specific physical 
interface. I doubt you can police the traffic on a specific Vlan 
spanning several physical ports to a common limit.

No, you can't apply a policer on a Vlan interface (SVI). But can police 
the traffic on the physical port, and still use the SVI.

Configuration guides for the "Yes" case are to be found on 
www.cisco.com: Products & Solutions -> Switches -> 3550. In the right 
sidebar there is a "Configuration" link. Select the proper IOS and 
choose "Configuring QoS".

Here is a direct link for 12.1(20)EA:
http://www.cisco.com/en/US/products/hw/switches/ps646/products_configuration_guide_chapter09186a0080212067.html

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Per Carlson