Magdy,

There are different ways to do this...  The easiest of which would be to get
an Adtran ISU 512 external ISU.   It will give a v.35 interface to the
router and allow you to plug up to 4 ISDN lines into it.   My guess is you
could use a floating static route out of the interface and the ISU would
dial when it sees DTR go high.

You could also do it using a router with multiple BRI interfaces and MPPP.  
Cisco has sample configs on this sort of thing using dialer interfaces,
etc..


Cory




-----Original Message-----
From: Magdy Ibrahim [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 25, 2001 12:44 PM
To: [EMAIL PROTECTED]
Subject: ISDN mulitiline aggregation! is that possible??


Hi all,
I am planning to install a backup uplink for my system using ISDN
connection. I am planning to establish 3 ISDN connection run only whin my
main connection goes down.
the problem is: I need to aggregate these three lines to establish one
connection with 384kbps is that possible?
If yes, How I can do the aggregation process??

Any advice will be appreciated.
Regards,

Magdy H. Ibrahim
MCSE, CCNA
System Administrator
Purenet Internetworking


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