We have a direct Dark Fiber DATA connectivity between our HQ and branch. Also our ISP have given us Fiber DATA link as their free service. Now we want configure both DATA link as redundant i.e. if something goes wrong with our own direct data link, we want automatically switch to our ISP's data link without any need of user interaction.
The switches used on both sides are catalyst 2960S with MMD SFP connectors. The internet is over the fiber and terminated at our branch office and it is been configured through the DATA link to the HQ