Traffic Volume Manager ? (Previously: RE: Regional differences in P2P)

Mon Jul 19 10:57:48 UTC 2004

On Mon, Jul 19, 2004 at 05:11:28PM +0800, Hendrianto Muljawan wrote:
> 
> So far people are used to do the capping of bandwidth with a Bandwidth
> Manager device, which does traffic shaping based on e.g.
> application/protocols, etc.
> 
> Now, since we are talking about capping on the volume, what is the
> product available on the market which can do both bandwidth and volume
> capping ?
> 

For DSL, this can be done at the BRAS. The most popular vendors
(Juniper and Redback) have support for dynamic subscriber profiles. 
Individual customers can be 'squeezed' when they have reached their 
cap. Accounting is done via radius records (start/stop/intermediate).

Capping at the DSLAM level could also be an option if you manage the
DSLAMs. It is usually the case that dslams are operated by a separate
NAP, usually the incumbent. In this case, capping at dslam is virtually
impossible, due to administrative overhead. 

Capping at the BRAS is not the ideal solutions (policing should happen
 as close to edge as possible) but from an operational standpoint,
 this is usually the only way.

For cable, capping is done on the cable modem. Metering per sub is done
on the CMTS. Capping, metering via SNMP.

Ethernet - edge switch.

-walter