Re: Simulated T1 and Frame Relay DCE

From: Jay Hennigan (jay@xxxxxxxx)
Date: Sat Aug 10 2002 - 01:26:30 GMT-3


   
On Fri, 9 Aug 2002, Joseph Rinehart wrote:

> both are DTE---there are two DCE/CSU's between, simulating a private line
> T1. Will that work?

Yes. You still need the frame-relay interface-type DCE command on the
interface(s) that will be switched. The DTE-vs-DCE cable/clocking issue
concerns the physical layer, and the frame-relay interface-type command
deals with the logical layer.

Having a physical DTE and logical DCE (or vice-versa) interface works fine.
It isn't that common in the field, but I've used this functionality where
we were delivering Internet to a customer on a PVC of a frame circuit
which also had other PVCs going to a legacy FRAD with internal CSU on
premise.

So we switched one-to-one the PVCs going from the carrier to the FRAD
with the frame-relay interface-type DCE command there, and configured a
sub-interface on the carrier-side PVC that we wanted to route IP.

Still working fine after a couple of years.

--
Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net
NetLojix Communications, Inc.  -  http://www.netlojix.com/
WestNet:  Connecting you to the planet.  805 884-6323


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