Not sure how to explain this exactly, but I attached a drawing.
We have 2 sites, 1 site with a couple of 3800's and a 6509.
the other site has 2 6513's and a couple of 3800's aswell.
Both sites serve the same VLAN's and the vlans go across using a trunked LAN Extension.
What I would like to do is have PC's on Site A have a default gateway going out via the Site A Router. If not available, then go to Site B as a alternate gateway.
And vice versa for the Site B users, meaning there primary gateway is out Site B's router, and secondary is out Site A's router.
I do not want to make any changes to the systems themself, but be able to do this either on the 6500's. The Fortigate Firewalls are presently doing the inter-vlan routing.
Please let me know some ideas and/or feedback as to what should be done.