[c-nsp] Egress shaping/policing for bandwidth control on a 3750-ME

[Frank Bulk - iName.com]

Thanks for the idea, but the port carries multiple VLANs.  Only one of them
needs to be rate-limited.

Frank

-----Original Message-----
From: Alex Moya [mailto:alexmoya at bellsouth.net] 
Sent: Tuesday, March 10, 2009 6:46 AM
To: Brad Henshaw
Cc: <frnkblk at iname.com>; <cisco-nsp at puck.nether.net>
Subject: Re: [c-nsp] Egress shaping/policing for bandwidth control on a
3750-ME

Try policing the port

Sent from my iPhone

On Mar 9, 2009, at 7:59 PM, "Brad Henshaw" <brad.henshaw at qcn.com.au>
wrote:

> Frank Bulk - iName.com wrote:
>
>> I have two Cisco 3750-ME (Metro) where we are trying to apply
>> an 8 Mbps bandwidth limit to it.
>> We tried HQM shaping but got a lovely message that "Hierarchical
>> service-policies are only supported on ES interfaces".
>
> Frank,
>
> The 3750ME can only do per-VLAN shaping on the ES ports.
>
> You can shape standard ports (but not per-VLAN) in increments of 10%
> of
> the port speed using the 'srr-queue bandwidth limit' command. To
> achieve
> 8Mbps with this you'd need to lock the [FastEthernet] port to 10Mbps
> and
> set the limit to 80%. Buffering of packets is less than ideal.
>
> The 3750ME supports hierarchical dual-level *ingress* policies on
> SVIs.
> To use these you need to set 'mls qos vlan-based' on the port and may
> or may not need to use a 'match input-interface' statement in the
> class
> of a subpolicy. (I've never used these so can't comment with
> authority)
>
> I'd provide an example but I'd just be ripping it from page 35-71 of
> the 3750 Metro 12.2(46)SE Software Configuration Guide ;-)
>
> I'm pretty sure neither SVIs nor standard ports support output
> policies
> so you'd best do as much as you can on the ES ports on ingress from
> your
> core.
>
> Note that ingress service policies on 12.2(44)SE1 seem to be broken -
> This may also affect other versions. We never logged a bug because
> it's
> fixed in 12.2(46)SE.
>
> Overall I think the quality control on IOS releases for the 3750ME
> leaves a BLOODY LOT to be desired.
>
> Regards,
> Brad
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/