We have 2 headoffices in the different cities.
In each city we have connections to Providers collocation where we have Cisco7206.
All 4 routers (Cisco7206) connected with each others via PLC.
We have a very critical and high bandwith traffic between HO's and planning to use load balancing.
i have few questions regarding that design.
1.all 4 routers will be in the same AS. Which routing protocol inside AS is better to use-BGP or OSPF?
2.regarding load balancing between Net1 and Net2.
How to do that load balancing is-1st path -link1-4-7 and 2nd path - link2-5-8.
3.which routing protocol to use at HO's routers?