I have four different industrial automation networks: N25, N10, N20, and N30.
N25: 192.168.25.0/24 (130 PLCs with Gateway 192.168.25.230; 50 PLCs with Gateway 192.168.25.1) All of them connected in the same Ethernet Switch and all of them permanently talking to each other.
N10: 192.168.10.0/24 (Gateway 192.168.10.230)
N20: 192.168.20.0/24 (Gateway 192.168.20.230)
N30: 192.168.30.0/24 (Gateway 192.168.30.230)
On Router A:
N10 to VLAN port1
N20 to VLAN port2
N30 to VLAN port3
N25 to LAN port4
Nothing connected to the WAN port.
I achieve communication between N10,N20,N30 and the ones of N25 that share the same Gateway, x.x.x.230
All the cases are static IPs, and there is no DHCP servers or other fancy thing.
There is another existing network N21:192.168.21.0/24 with several routers and one of them have a network 192.168.20.0/24 somewhere in another location that has nothing to do with my N10.
From a "higher authority" the two networks N21 and N25 are connected with a router 192.168.25.1/192.168.21.5
This is the problem: From the Network N21, a workstation must be able to communicate with all the N10, N20, N30, and N25, but only the N25 that have a gateway as 192.168.25.1 are the only ones accessible from the workstation (located in N21)
I have three CISCO RSV4000 router.
Question: How to connect them and their routing tables?
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