At 07:56 PM 6/24/2003 +0000, annlee wrote:
>Even if it is "switched from spoke-to-spoke", at Layer 1 the spokes connect
>via the hub. And to do anything with the traffic, Layer 2 must be
>consulted -- which gives us Priscilla's DLCI switching table. And, unless
>the traffic is unidirectional, you will need DLCIs for the opposite
>direction, as well. I don't know Cisco FR that well, but in at least some
>vendors' FR implementations, the "return" DLCIs do not have to have the same
>numbers as the "forward" ones.
The two DLCIs that identify the two ends of a PVC to the user('s routers)
don't have to be the same. However a PVC always provides bidirectional
connection, AFAIK, so regardless of implementation you will be able to send
traffic in both directions. Are you saying that in some cases you might
need a total of 4 DLCIs to establish one bidirectional connections between
two routers? Why would this be an advantage?
Thanks,
Zsombor
> That actually enables you to number according
>to a pattern which indicates connectionality. And it also makes the DLCI
>switching table twice the size that Priscilla showed.
>
>Annlee
>
>""Larry Letterman"" wrote in message
>news:[EMAIL PROTECTED]
> > My opinion is that it will go to the hub site since it's a point to
> > point network..
> > If the hub were to be a multi-point connection to the spokes, which
> > would be one network,
> > Then the traffic could be switched from spoke to spoke...
> >
> >
> > Larry Letterman
> > Cisco Systems
> >
> >
> >
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
> > Aaron Ajello
> > Sent: Tuesday, June 24, 2003 10:06 AM
> > To: [EMAIL PROTECTED]
> > Subject: FR concept question [7:71263]
> >
> >
> > This is probably a very simple concept question, but I've asked a couple
> > people and haven't gotten a solid answer.
> >
> > If I've got two frame relay spoke sites connected point to point with a
> > hub site and a server in one spoke site copies a file to a server in the
> > other spoke site, does all the traffic pass through the hub site, or is
> > it switched within the frame cloud?
> >
> > I guess what I'm wondering is does a frame cloud act somewhat like a
> > lan, where initially packets will go through the default gateway and be
> > routed and then the following packets will be switched?
> >
> > thanks.
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=71300&t=71263
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
