Erik Mintz wrote:
>
> The short answer is no.
>
> Server1 requests a file from Server2.
> At router Chicago, a frame is created with a remote
> destination DLCI 100.
> Encapsulated in that frame is the packet with a destination of
> Server 1.FR
> is a layer two protocol. It only has info to forward the packet
> to the
> remote switch with DLCI 100. This is defined by the PVC mapping.
>
> Yes, shorter path would be to use the frame cloud to send it
> to DLCI 99
> directly. However, DLCI 86 and DLCI 99 are DTE devices that are
> not aware of
> each other.
>
> If the frame was addressed to DLCI 99 directly, it would be
> dropped by the
> carrier as a violation of the defined map. Since there are only
> ten bits
> available for addressing, DLCI numbers are reused for different
> customers.
>
> Chicago Miami
> [Server2] [Server 1]
> /\ /\
> DLCI 99 DLCI 86
> |____ ------|
> | |
> DLCI 100 DLCI 200
> |/\-----{HUB SITE}-----/\|
>
>
> Erik Mintz
>
>
> ----------
> >From: "Aaron Ajello"
> >To: [EMAIL PROTECTED]
> >Subject: FR concept question [7:71263]
> >Date: Tue, Jun 24, 2003, 1:05 PM
> >
>
> > 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=71298&t=71263
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