Looking for suggestions.. Doing std routing now, but can see potential issues in the future.
LANa ----> routerA ----> CoreRouterA ----> routerB ----> LANb
LANc ----> routerC ----> CoreRouterA ----> routerD ----> LANd
Hosts on LANa and LANb can talk to each other and hostA off FA0 on CoreRouterA
Hosts on LANc and LANd can talk to each other and hostA off FA0 on CoreRouterA
LANa and b should not see LANc and d traffic and LANc and d should not see a and b traffic.
Works fine today as routed network, but now new LANe has same subnet as LANa.