Re: (PM) DLCI on primary and subint

Kyle Platts (kwplat1@uswest.com)
Wed, 17 Jun 1998 08:38:38 -0500

R Gibbons wrote:
>
> Do primary and subinterface DLCI's have to be unique i.e.
> Primary : 16 192.168.1.1
> Subint : 17 192.168.2.1
>
> or can I have 16's on each i.e.
> Primary : 16 192.168.1.1
> Subint : 16 192.168.2.1
>
> I'm assuming they have to be unique.

Your assumption is correct. A DLCI is a logical identifier over a
physical interface, ie T1. If you were to send data into the frame cloud
with the same DLCI and expect it to go 2 different directions, how is
the switch to know which way you want the data to go? Frame relay
switches are layer 2 devices only and have no knowledge of layer 3
protocols.

-- 
Kyle Platts
Network Engineer
!NTERPRISE Networking Services
U S WEST Communications
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