[j-nsp] EoMPLS data rate

[Darren O'Connor]

You could shape outbound on each side. If you do police the customer could just shape outbound from their end which would prevent drops

Thanks
Darren
http://www.mellowd.co.uk/ccie



> Date: Fri, 29 Nov 2013 12:58:39 +0000
> From: me at geordish.org
> To: lamusiqueduhasard at gmail.com
> CC: juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] EoMPLS data rate
> 
> Have you thought about traffic shaping instead?
> 
> 
> On 29 November 2013 10:54, Vincent <lamusiqueduhasard at gmail.com> wrote:
> 
> >  Hello all,
> >
> > we are trying to build for a customer an EoMPLS circuit of 10 Mbps over a
> > GE interface.
> >
> > Configuration looks like this at this moment:
> >
> >   dude at LAB-MX960> show configuration protocols l2circuit
> >   neighbor 172.16.50.1 {
> >       interface ge-0/1/1.0 {
> >           virtual-circuit-id 1;
> >       }
> >   }
> >
> > ... with something similar at the other end of the network. This is easy
> > and works quite well.
> >
> > Next step is to limit the traffic to 10 Mbps.
> >
> > We were thinking of using a simple policer like:
> >
> >   dude at LAB-MX960> show configuration firewall policer 10M_fwp
> >   if-exceeding {
> >       bandwidth-limit 10m;
> >       burst-size-limit 15k;
> >   }
> >   then discard;
> >
> > ... and apply it on the ingress interface, but maybe that's a little bit
> > too rough (in terms of packet drops and TCP backoff)? Furthermore we are
> > not sure on how to select the burst parameter.
> >
> > Is there any better way to achieve this ? Note that the customer should not
> > be able to burst for a long time, and have this traffic above 10 Mbps go to
> > a best-effort QoS: we just want to limit its traffic to a certain level
> > without completely breaking its TCP connections.
> >
> > Does this all make sense?
> >
> > Thanks,
> >
> > Vincent
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