Hi,
I think you may find that DLCI's are unique to a physical line. A frame switch may
have several thousand lines attached to it. Each one of these lines has a number not
all to dissimilar to a phone number. Within each of these you can have a number of
channels these are the DLCI's.
For example, a line ZX123546L may be a 2Meg service from your router to a Frame
switch. This may have attached 4 DCLI's 16,17,18,19. Another service connected to
the same switch AZ54363D could also have DLCI's 16,17,18,19. You may have a
connection (A PVC) from your DLCI 16 on line ZX123546L going to DLCI 16 in AZ54363D.
The other DCLI's might go to other switches other lines within the same switch or
another PVC to the same service.
The DLCI is between you and the switch on a particular line. This is then considered
local to you.
That's how I understand it.
Teunis,
Hobart, Tasmania
Australia
On Friday, December 22, 2000 at 02:21:32 PM, Timothy R Estes wrote:
> DLCIs are unique to each frame switch. Meaning, you may have DLCI 203 on one
> end, and have DLCI 203 on the other, as long as the other end is connected
> to a different frame switch. Or you may have DLCI 203 on one end and DLCI
> 405 on the other. The DLCI has nothing to do with there the traffic is
> eventually going, that's why Cisco uses the term "local significance".
>
> The DLCI tells the frame switch which port to use.
> Remembering that a DLCI is a Layer 2 address might help this make sense.
>
>
> hth
>
> Timothy Estes CCNA
> Senior Network Systems Analyst
> Intermedia Communications
> Tampa FL
> [EMAIL PROTECTED]
>
> ""Yee, Jason"" <[EMAIL PROTECTED]> wrote in message
> 859B90209E2FD311BE5600902751445D35F19B@LYNX">news:859B90209E2FD311BE5600902751445D35F19B@LYNX...
> > reason is because when building the frame-relay circuit you need to build
> > two parts , one is towards the customer from frame switch the other one
> is
> > from provider's router to frame-switch , I normally use the same dlci nos
> > for the two parts but you can use different
> >
> >
> >
> > Jason
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> > Jeff McCoy
> > Sent: Friday, November 03, 2000 9:37 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: Two DLCI numbers?
> >
> >
> >
> >
> > "jeongwoo park" <[EMAIL PROTECTED]> wrote in message
> > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > > Hi all
> > > While I was reading a cisco book, I came across the
> > > fact that DLCI number has only local significance
> > > because there might be more than one DLCI number
> > > associated with one pvc.
> > > Why would any pve in frame relay network have two DLCI
> > > numbers?
> > > I know that DLCI number is given by frame relay
> > > service provider.
> > > Can someone explain this?
> > >
> > > Thanks in adv.
> > >
> > > jeongwoo
> > >
> > >
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