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Date: Sun, 9 Aug 1998 17:53:42 -0700 (PDT)
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From: Javier Henderson <javier@kjsl.com>
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To: Kevin Day <toasty@home.dragondata.com>
Cc: freebsd-isp@FreeBSD.ORG
Subject: Cisco + ISDN Backup + Routed(?)
In-Reply-To: <199808100016.TAA15544@home.dragondata.com>
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Kevin Day writes:
 > 
 > Here's my dilemma... I have a cisco 25xx router, with two T1's coming into
 > it. However, the telco has been especially crappy lately, causing my T1's to
 > go down at random times. I purchased a BitSurfr Pro modem, arranged ISDN
 > dial backup from my uplink, and all looked well, until I went to connect the
 > BitSurfr to the AUX port on my router.
 > 
 > The silly thing can only go up to 38400 baud, making it too slow for me to
 > use.

	Yep.

 > What I'd like to do is put the BitSurfr on one my my fbsd machines, and add
 > a static route with a higher metric on it at my cisco. (i.e. if the line
 > goes dead, route packets through one of the server).
 > 
 > Anyone done anything similar before? Also, how to I tell the fbsd machine to
 > normally use the router, except when the router is trying to use it to
 > gateway? (rip or something?)

	When you say 25xx, what exact model is it? If it's a 2501, then
I presume that both high speed serial ports are used for the T1's. There are
a couple of 25xx boxes that have four serial ports, two high speed, and two
high speed sync/med speed async.

	If it's a 2501, then using a routing protocol to distribute routing
information might be a good idea. I'd choose OSPF over RIP, however. This
would require running gated on your FreeBSD boxes, as I think routed only
supports RIP.

-jav

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