Path: utzoo!attcan!uunet!jarthur!usc!zaphod.mps.ohio-state.edu!ncar!boulder!daemon
From: tjs@uh.msc.umn.edu (Tim Salo)
Newsgroups: comp.dcom.sys.cisco
Subject: Switched T1 with ciscos?
Message-ID: <23836@boulder.Colorado.EDU>
Date: 23 Jul 90 23:36:33 GMT
Sender: daemon@boulder.Colorado.EDU
Lines: 25

Is anyone using (pseudo) switched T1 circuits, such as Accunet Reserve,
with cisco routers?

Our particular application has a 56k circuit between two locations.  At
times, more bandwidth is needed.  One possibility is to have an Accunet
Reserve line in parallel with the 56k circuit.  The Accunet Reserve T1
circuit would be enabled when additional bandwidth is needed.

   !--------!  56k line (up all the time)         !--------!
   !        !-------------------------------------!        !
   ! router !  switched T1 (up only when needed)  !        !
   !        !-------------------------------------!        !
   !--------!                                     !--------!

Has anyone tried this?

Will IGRP handle the addition and deletion of the T1 line gracefully?  (Will
the 56k line be used at all when the T1 line is active?)  ((To digress for
a moment, if the T1 line has a significantly different propagation delay
than does the 56k line, odd things can happen, e.g., large reassembly
queues.))

Tim Salo
tjs@msc.edu
(612) 626-0347