Our school just received a bunch of hardware from a corporation leaving a location, so now we are upgrading our networking in four classrooms. The rooms have fiber connections to each other. The hardware we have are a Cisco 7606-s router and a Cisco 6506 router and a bunch of switches. The connections between the routers and switches will be 10 Gbit/s fiber links.
The problem is that we have two 100 Mbit/s and a single DSL uplink in one room (with the 6505), one 100 Mbit/s and a DSL in another room (with the 7606-s) and a single DSL connection in the third. So how would we bring the 100 Mbit/s connections together so we could do link aggregation? Also the DSL connections should work as a failover (they are independant from each other, but from the same ISP).
I thought that routing the uplinks through the routers and switches to a single router would be bit of a hack, so would there be any way to balance the traffic between the two routers? That is a bit problematic too, since they are not identical and would have a different number of uplinks.
Edit: I think we could get the faster connections to come to a single location. That would leave only the DSL connections to figure out