Switchover between Lease Line & ISDN

Unanswered Question
Mar 1st, 2009


I have DC & DR setup. In DC we have LL & in DR we have ISDN. I want if LL in DC fails, IDSN in DR must gets activated. Can this be achieved?? If so please suggest..

DC & DR is connected by Fiber.

I have this problem too.
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Giuseppe Larosa Sun, 03/01/2009 - 10:07

Hello Partha,

it is possible to do this even if the routers involved are different using the dialer watch feature.

With this feature the backup router monitors the state of selected routes in the routing table when the routes vanish the router calls over ISDN



the two routers on DR site share a lan segment with a routing protocol for the exchange of routes: RIP, EIGRP or OSPF can be used.

Hope to help


acharyr123 Sun, 03/01/2009 - 11:19

Thanks for your prompt answer Giuseppe.

I have DC & DR. Lease Line goes into DC Router where as ISDN goes into DR.

Whether using " Dialer Watch Feature" it's possible to achive??


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