how many broadcast domains are in the topology?
Hi Giuseppe, I'm using the LAN concept to define the 3 broadcast domains for this EIGRP example. I'm unsure why do you include the serial interface (192.168.80.31) as one of the broadcast domain, as I see this interface in the same subnet as 192.168.80.28. Kindly seek your explaination.
However, a possible answer is 2 or more, that is the number of LAN interfaces that appears as outgoing interfaces/next-hops. The serial interface is a separate broadcast domain / IP subnet but it is point to point link. Nothing can be said about the remote IP subnets we can guess that IP subnet 192.168.90.0/24 belongs to a LAN interface of another router. This can be counted as the third broadcast domain.