From: NET HE (he_net@hotmail.com)
Date: Sat Mar 07 2009 - 13:41:26 ARST
In terms of traffic shaping used by frame-relay, there are four methods as I
know,
1)generic traffic shaping used by FRAME-RELAY interface or subinterface
Generally speaking, you follow the traffic to configure it. If the traffic is
going to use the interface, then configure it at interface level; if the
traffic is going to use the subinterface, then configure it at subinterface
level. And it works based on ACL instead of PVC.
2)legacy frame-relay traffic shaping
IT works on PVC level. And "frame-relay traffic-shaping" command must be
enabled under interface. When it is used, by default, all PVCs are shaped at
64k. After you use map-class frame-relay to define the class, then You use
"class" command under specific pvc to modify shaping rate.
3)MQC-based frame-relay traffic shaping
It works on PVC level. It doesn't need "frame-relay traffic-shaping" command
under interface. It needs hirarchical MQC policy-map, in which the parent
level uses class-default to define shaping rate. After you use map-class
frame-relay to define the class, then you use "class" command to put it under
specific pvc.
4)MQC-based frame-relay voice adaptive traffic shaping
The basic mechanism is there are 2 queues, one is priority queue, and the
second is the regular queue. When the interface detects there are packets in
priority queue, the adaptive shaping take effects. Suggest you to read DOCCD
WAN configuration guide.
Best Regards,
Net (Xin) He
> Date: Sat, 7 Mar 2009 10:14:49 -0500
> Subject: Re: FRTS
> From: jandiorio@gmail.com
> To: vj2106@gmail.com
> CC: ccielab@groupstudy.com
>
> I am not sure of the best practice but there are couple of things to
> pay attebtion to.
>
> 1. gts at the interface level will treat all pvc's together cumulatively.
>
> 2. frts applied at the interface level will set the same rate for each pvc.
>
> 3. frts applied to the pvc sets tht policy on that pvc, but a default
> rate of 56k will be set on all other pvcs.
>
> please correct me if I am not understanding this.
> jeff
>
> On 3/7/09, Vijayaram V <vj2106@gmail.com> wrote:
> > Hi,
> >
> > In frame-relay traffic shaping, even if a router has only one PVC, is it
> > best practice (or exam practice) to apply frame-re class under that
> > particular PVC/DLCI rather than generically under physical interface?
> >
> > Thanks.
> > ----
> > Vj
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