[AusNOG] ASR 903 Shaping

[Brad Henshaw]

Mmm, you might be SoL. You could try a later IOS release (if there is one)
and see if that affords any additional configuration flexibility. You could
ask TAC. There is a chance that in practice it does not in fact matter but
I'd test that one thoroughly and assume nothing. I don't have experience
with that TW product.

Suggest you hit up the Cisco-NSP list as it's probably a better topic for
there.

Regards,
Brad

On Thu, May 24, 2018 at 5:33 PM, David Fowler <David.Fowler at datacom.com.au>
wrote:

> Hi Brad
>
>
>
> I think we do. Telstra pretty explicit saying this is required else
> “you’ll experience degraded performance”. Their 4Mb EA spec wants a 32000
> bit BC when the shaper can only be configured with a minimum 60000.
>
>
>
>
>
> Regards,
>
>
>
> *David Fowler*
>
> Infrastructure Engineer – Enterprise Operations
>
>
>
> *From: *Brad Henshaw <henbra at gmail.com>
> *Date: *Thursday, 24 May 2018 at 15:07
> *To: *David Fowler <David.Fowler at datacom.com.au>
> *Cc: *"ausnog at lists.ausnog.net" <ausnog at lists.ausnog.net>
> *Subject: *Re: [AusNOG] ASR 903 Shaping
>
>
>
> Hi David,
>
>
>
> It may be worth reviewing whether you really need to specify Bc in your
> shaper policy. It was a while ago but I recall when working with the ASR920
> I found the burst values automatically calculated by IOS (without manually
> specifying Bc/Be) worked pretty effectively when using 'shape average' in
> multi-level policies. I haven't touched a 903 however so don't know if its
> behaviour is different.
>
>
>
> Regards,
>
> Brad
>
>
>
>
>
> On Thu, May 24, 2018 at 3:37 PM, David Fowler <David.Fowler at datacom.com.au>
> wrote:
>
> Hi folks
>
>
>
> Does anyone know if it’s possible to enter in a lower BC value in a
> Shaping policy? Seems with this platform the lowest is 60000 bits… this
> doesn’t help when we need to configure 4Mbps Telstra EA policies…
>
>
>
> Maybe a different software version?
>
>
>
> Regards,
>
>
>
> *David Fowler*
>
> Infrastructure Engineer – Enterprise Operations
>
>
>
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