I have the following setp in mind:-

site 1

Inside network 192.168.0.0

Outside interface (connected to main link) 1.1.1.1

Backup interface (connected to ISP) 2.2.2.2

Site 2

Inside network 192.168.1.0

Outside interface (connected to main link) 3.3.3.3

Backup interface (connectd to ISP) 4.4.4.4

What I would like is to:-

i. Normally created IPsec between the two sites using the links on the "outside interface" between 1.1.1.1 and 3.3.3.3

ii. Create a 2nd rule, so if the "main" link is down that it uses the link 2.2.2.2 and 3.3.3.3

Any ideas how this could be acheived using a single ASA 5510 at each site? I thought of creating a single map with muliple peers at site one, using static mapping to tell the ASA to direct traffic for 2.2.2.2 via the 2nd interface, but when I come to bind the crptomap I relaise that each rule can only be bound to one interface.

I have the same situation but in recverse at site two.