From: Jim Brown (Jim.Brown@xxxxxxxxxxxxx)
Date: Tue Oct 23 2001 - 14:32:21 GMT-3
If you down a interface manually, the router is smart enough to realize you
meant to down the interface and therefore doesn't bring up the ISDN backup
circuit. If you want to test it, unplug the cable.
Another alternative to monitor a DLCI/PVC is frame-relay end-to-end keep
alive. It is a 12.0 feature, check it out.
I wouldn't consider using dialer-watch on a frame route a good solution. The
PVC on the far end could fail, but the frame route would still appear in the
routing table unless you were monitoring the remote host route.
To use dialer-watch you actually should monitor a route on the other side of
the frame cloud learned from a dynamic protocol. One that would disappear if
the PVC failed.
-----Original Message-----
From: Fear, Russell H [mailto:Russell.Fear@capgemini.co.uk]
Sent: Tuesday, October 23, 2001 6:47 AM
To: 'ccielab@groupstudy.com'
Subject: deman-circuit and ccboot lab 20
Can anyone in the group clarify something for me please. When I use ip ospf
demand-circuit on a dialer interface, 7 out of 10 times it works fine with
hellos being supressed, the rest of the time it brings up the line
continually for hellos. I have debugged in these cases and it is not an lsa
but a hello bringing it up. I realise I can stop this with an access list
but is the command badly bugged or is there something I'm missing ?
Also if anyone has done ccbootcamp lab 20, how do you get the ISDN to
back-up a dlci ? I see in the solution that they have just placed the
interface in back-up mode but this doesn't seem to work when I down the
interface.
Any help would be appreciated.
TIA
Russell
* 700 2201 Internal
* +44 ( 0 ) 870 238 2201 External
* russell.fear@capgemini.co.uk
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