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Community Member

Frame Relay DLCI question

Hello all. When configuring Frame Relay with dynamic address mapping, do I need a DLCI if I am using the top level interface? IE: serial 0

Thanks!

Robert

3 REPLIES
Community Member

Re: Frame Relay DLCI question

Let me edit it the above question. In the "real world" is the above situation normally not done? That is when implementing Frame Relay, are subinterfaces typically used? And therefore one would use a DLCI on the subinterface as normal.

Thanks,

Robert

Re: Frame Relay DLCI question

It becomes much simpler to manage, when using subinterfaces. Mostly people prefer using sub ints, rather than using physical ints.

Whether you use a subint or physical int. you will need one pvc for each remote site you are communicating to. If you have 10 remote sites, you can reuse the same dlci number for the remote sites, and use different dlci numbers for each pvc terminating at the HO. Like below:

HQ --dlci 101 to dlci 100 ----remote1

--dlci 102 to dlci 100 ----remote2

--dlci 103 to dlci 100 ----remote3

--dlci 104 to dlci 100 ----remote4

Even though the remotes are having same dlci configured, the PVCs are unique.

Community Member

Re: Frame Relay DLCI question

You will need a DLCI with each link doesn't matter you use main interface or subinterface

/Bessie

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