We have two sites LAX and SUV with LAX connecting to ISP A and SUV connecting to ISP A and B. We have two identical Cat-4506 (Cisco 4506
CPU at 800Mhz, Supervisor V-10GE/512 Mb)
on both the sites.
Site LAX publishes Network A.A.A.A via ISP A
Site SUV publishes Network C.C.C.C via ISP A and with AS path prepend via B with floating static route for fail over.
No Routes learned via any ISP at present.
We have recently setup the 1G link between the sites and hence we would like to use SUV's ISP A and B as fall back for LAX. Also the following conditions have to be met:
1. Network A.A.A.A will only use the ISPA in LAX when the link is functional likewise the site SUV with Network C.C.C.C via ISP A.
2. In the event of a Link Failure in LAX the ISP A in the SUV should be preferred before ISP B.
Given the Hardware Spec(CPU and Memory limitations) please propose a method to achieve all this.
Any Input is greatly appreciated.
Thanks in advance