I am using ISDN as the backup for primary DSL line. I am plainning to use dialer watch to get the secondary line up when the primary link goes down. My edge router is configured with EIGRP for routing purpose.
So, what is the best practise like, do i need to add the secondary link's IP in EIGRP or is it acceptable to add the scondary link as a floating static route. Some one let me know which is the best practise to be followed.