I have a dark fiber loop. I have a 6506 at the core and 3750 layer 3 switches at remote sites. I would like to close the loop so that if I have a fiber break, traffic can route back around to the core. If I have two GBICs - one going in each direction, what considerations do I need to take into account. Essentially it would be a widely dispersed stack. How can I force the traffic to default to the shortest path if available. I am currently using RIP.
Any assistance is greatly appreciated.