Dlsw over an ISDN link used as a backup for another link

From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Aug 08 2003 - 13:59:11 GMT-3

Hi,

I'm trying to figure out how to configure dlsw so that it's traffic can cross
the dialup link, but only when the primary link fails.

Here's the situation:

            /--- primary link----\
     R1 R2
           \-----isdn-------------/

I know how to config dlsw over the primary link and how to config dlsw over
the isdn link when there's only link. But, how do I make the dlsw traffic
move from the primary to the isdn link when the primary fails?

Normally, if you want dlsw to bring up the dialup link, the "dynamic" keyword
is added to the dlsw remote-peer command and interesting traffic is defined.
But, if this is configured, then how does dlsw know not to use this link as
long as the primary link is working?

Thanks, dt

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