I would like to get an idea of what hardware i will need and sample configuration for the following scenario:
I have my main site with a 3745 router.
My district offices (5 of them) have 1841 router.
I have ISDN lines installed at all district offices and also at the main site.
My districts are connected to the main site using FR-->ATM . I would like to have the capability of dialing from the district to the main site in case the FR is down. So basically i want it for backup line.
Any ideas on hardware needed,
can all districts connect by ISDN to main site or only one at a time ???
I believe that the ISDN will be not used untill the DR goes down ??? is that correct ??
Also, can you give me sample configurations or point me somewhere to get some more info ??