RE: ISA and ISDN backup connection

  • From: "Friese, Casey" <cfriese@xxxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Thu, 13 Feb 2003 10:40:28 -0500

hmm, logically, if the one external connection goes down and the backup 
connection is fired off, there is still only one external connection..no?

-----Original Message-----
From: John Tolmachoff [mailto:isalist@xxxxxxxxxxxx]
Sent: Thursday, February 13, 2003 10:15 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: ISA and ISDN backup connection


http://www.ISAserver.org


ISA 2000 only supports one external connection. You will have to use a 3rd
party software like RainConnect or a hardware solution like BGP for that.

John Tolmachoff MCSE, CSSA
IT Manager, Network Engineer
RelianceSoft, Inc.
Fullerton, CA  92835
www.reliancesoft.com

> -----Original Message-----
> From: Friese, Casey [mailto:cfriese@xxxxxxxxxxxxx]
> Sent: Thursday, February 13, 2003 6:59 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] ISA and ISDN backup connection
> 
> http://www.ISAserver.org
> 
> 
> I have an ISA-to-ISA VPN connection setup between a remote office and our
> corporate HQ.
> 
> The corporate HQ is connected to the internet using a T1 that goes
directly into the
> ISA
> The remote office has DSL for an internet connection going directly into
the ISA.
> 
> The tunnel comes up and users from both networks can communicate with
> eachother - everything is fat, dumb and happy,
> except when the DSL connection decides to go to sleep.
> 
> Because of the unreliable nature of the DSL connection and lack of any
other high-
> speed internet service in the remote office's location we have decided to
purchase
> 2 external ISDN modems to use as backup connections in the event that the
DSL
> connection craps out.
> 
> Each ISDN devices is identical, made by MultiTech and connects to the
serial port
> of each ISA server.
> 
> What I am looking for is guidance with how to configure RRAS so when the
Tunnel
> is detected as being unreachable, RRAS will fire off the ISDN connection
to
> connect to the ISDN modem in the corporate HQ.  If this is beyond RRAS's
> capability, is there another means, short of initiating the connections
manually,
> while utilizing the existing hardware?
> 
> Any help would be greatly appreciated.
> 
> Thank You,
> -Casey Friese
> 
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