hi Stefan, if you have some piece of software that will automatically connect the isdn line when traffic is received on the isdn device, you could add another default route with a higher metric, like:
ip r add default dev $isdn_dev via $isdn_ip metric 2 (assuming the first default route has a metric of 1) but that might bring the isdn line when the internet link is too saturated. you can also try to create a script to ping LRP2 box trough LRP1 and should that ping fail bring on the isdn interface, that script could go to the cron.d (every 2 minutes "*/2 * * * *") the script might be like: #!/bin/bash /bin/ping -w 2 -n -q -I $INTERNET_DEV -c 1 $LRP2_IP 2>&1 > /dev/null if [ "$?" = "1" ]; then ip r del default bring_up_isdn() ip r add default dev $ISDN_DEV fi you could also add to this script functionality to bring down isdn when internet is up again. that might help you, pedro > -----Original Message----- > From: stefan [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, October 03, 2001 9:33 AM > To: [EMAIL PROTECTED] > Subject: [Leaf-user] routing question > > > > hi !! > it's not really a LEAF-specific problem, but maybe a routing-pro > reads this also - hopefully. > i've connected two locations with ipseced-LRP-boxes, now i plan > a backup with isdn, but i have some routing problems. > > > the network looks like this: > > 192.168.1.0----LRP2-.-.-.-Internet-.-.-.-.-LRP1 > | ipsec | > | FW----10.1.1.0 > | | > | portmaster > |__________isdn______________| > > > the FW is running on solaris. portmaster is a RAS-server from > lucent. > i want the network to work on, if the internet connection fails, > but i don't know which routing-protocols i can/should use to > solve this. i'd be glad if there's an easy solution. > i think the main "problem" is the firewall, which schould know, > which route to the 192.168.1 network to use. > > > thanks. > > stefan > > > > _______________________________________________ > Leaf-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/leaf-user > _______________________________________________ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
