I have a question concerning a high availability design.
We are running OSPF internally, all in the same area.
My questions are concerning the etherent connections in violet.
In our network, internally, all router ethernet interfaces are in the same vlan and subnet. At the moment, we only have etherent A in place.
Would the way to make this redundant connection on the MPLS router involve just have interface A in the existing router subnet and create a new router subnet for interface B, or possibly subnet a two host network out of the existing router subnet?
What I am getting at, is that if we are using dynamic routing (OSPF) and the router will not allow more than one interface in a subnet, the second connection will have to be in a different subnet, is this correct?
And our setup requires that we prioritize the one connection (A) over the other(B), would this be done with increasing the cost of one connection over the other, or a more common or sophisticated way of doing this?
Also, since the ASA appliances will be one active, the other standby, we need to prioritize Ethernet A over B there as well.
We have a block of 32 addresses, would we subnet the two etherent interfaces there, maybe two host subnets?
We still need to route the rest of the address block to the outside interface of the ASA appliances?
Any reply would be appreciated