3 FR Link with Single DLCI Number

Unanswered Question
Aug 26th, 2009
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Hi All,

Our service provider gives us 3 separate E1's. They told us to configure our router's sub serial interfaces and give us only 1 dlci number. Is this the right way of doing this? Only one dlci for the 3 separated E1 links?

Im aware of the multiple dlci's on one interface but this one, im a little bit confused.

I will much appreciate any of your help guys....

Thanks in advance cisco guru's! More power to cisco world.

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Peter Paluch Wed, 08/26/2009 - 02:24
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Hi Chester,

How are these three E1 lines terminated on your router? Is each of them terminated on a separate physical interface? If yes then a single DLCI will work just fine because each interface maintains its own table of DLCIs and mappings so there is no ambiguosity.

Best regards,


cmadiam82 Wed, 08/26/2009 - 02:41
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Many thanks paluchpeter for your quick reply.

Yes! This three E1 lines are terminated on separate physical interfaces.

Thanks also p.bevilacqua.

Guys, your doing greate!!!

paolo bevilacqua Wed, 08/26/2009 - 02:24
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Yes, DLCI have local meaning to the interface only so it can be reused.


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