Re: Can one aggregate-policer be applied to different ports?

From: Hobbs (deadheadblues@gmail.com)
Date: Fri Sep 26 2008 - 14:31:19 ART

FYI, I found it right here...

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_44_se/configuration/guide/swqos.html#wp1048656

"cannot use the aggregate policer across different policy maps or ports."

Still seems like 4Mbps would be allowed, as opposed to 2.

On Thu, Sep 25, 2008 at 6:53 PM, Hobbs <deadheadblues@gmail.com> wrote:

> Hi, I had a task to limit total bw in VLAN12 to 2 Mbps (along with some
> other marking). VLAN12 exists on switch 1. I had the following solution:
>
> mls qos aggregate-policer 2MEG 2000000 250000 exceed-action drop
>
> policy-map VLAN12
> class MAIL
> police aggregate 2MEG
> set precedence 3
> class WEB
> police aggregate 2MEG
> set precedence 2
> class class-default
> police aggregate 2MEG
>
> interface FastEthernet0/1
> service-policy input VLAN12
>
> interface FastEthernet0/2
> service-policy input VLAN12
>
> The solution created separate aggregate-policers because it said the same
> one can't be used on multiple ports. However the switch let me apply it.
> Normally when qos features aren't allowed, the switch says something.
>
> If I did create separate 2Mbps aggregate policers (and create another
> policy, one for each interface) like the solution then technically 4 MEG
> would be allowed, right? That would be 2Mbps in each port...
>
> I have been reading the QOS section section of 12.2 for 3560 and can't find
> where it says aggregate-policers can't span ports.
>
> Is this true? If so, can you point me where in the doccd?
>
> thanks,

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