Currently I have 2 WAN connections coming into my sonicwall 4500. One is a T1 line and the other is a newly installed fiber connection with the same ISP. Now there is a third connection that the current site-to-site vpn's are authenticating to that they will be moving from.
The issue that I am having is that when I create the vpn policy on the sonicwall 4500 and the remote site (sonicwall tz100 and another site with a tz150), the tunnel will only authenticate with the T1 connection that will be dropped for obvious reasons. Currently i am sending traffic out the T1 with the fiber sitting idle save for specific GVC clients.Management would like to have a slow migration over to the new circuit with as little down time as possible. Remote users connecting via the GVC to the new circuit have no issues. The moving of the site-to-site vpn's is the first step in a long line of migrations.
How can I get site-to-site vpn's to authenticate with the secondary ip address on the sonicwall 4500 knowing the above information?
Thanks in advance.