From: tycampbell@comcast.net
Date: Wed Sep 15 2004 - 08:13:44 GMT-3
I guess I don't understand something here. Each site is assigned a different DLCI..isn't there a frame switch involved somewhere then ?
If there is a frame switch involved, I would not consider that a true back-to-back frame relay setup.
In a back-to-back frame relay setup, with no switch involved, the DLCI's are the same on each end, and keepalive is disabled. I had always thought in order for different DLCI's to talk to one another, they had to be switched..ie...with a frame switch.
Ty
> I used back to back frame relay in real life on a point to multipoint
> satellite link setup. Basically you've got one carrier or link that is
> received by many remote sites and each site is assigned a different DLCI.
>
> Works well :)
>
> Yasser
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> James
> Sent: Wednesday, September 15, 2004 1:29 AM
> To: jellyboy
> Cc: ccielab@groupstudy.com
> Subject: Re: FR back-to-back (ipexpert elabs)
>
> On Tue, Sep 14, 2004 at 11:13:55PM +0100, jellyboy wrote:
> > Hi all,
> >
> > I am working thru the elabs, namely #301, #302 at the moment. All is
> > fine with p-to-p and multipoint. However some sections ask for a
> > back-to-back frame relay connection. I understand the configs and
> > theory. My question is this scenerio a lab scenerio concocted by
> > devious <pardon> instructors or does it have a more real life
> > application (one that I do not know about). Would love an answer.
>
> I suppose the back to back frame is more or less of frame relay without
> a real frame relay infrastructure?
>
> Clearly, not a real life need. Why deal with frame when you can just
> run HDLC or PPP accross straight circuit? :)
>
> -J
>
>
> --
> James Jun TowardEX Technologies,
> Inc.
> Technical Lead Network Design, Consulting, IT
> Outsourcing
> james@towardex.com Boston-based Colocation & Bandwidth
> Services
> cell: 1(978)-394-2867 web: http://www.towardex.com , noc:
> www.twdx.net
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
> [GroupStudy removed an attachment of type application/x-pkcs7-signature which
> had a name of smime.p7s]
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Fri Oct 01 2004 - 15:00:42 GMT-3