The client is now in one subnet with the neighbour 192.0.2.1. A practice service runs on the same neighbour at 198.51.100.20, and it does not answer from the client. Compare the two requests.
Start on the card builds the network, and commands containing lab-client run on the client.
Two addresses of one neighbour
Send two echo requests each to the neighbour 192.0.2.1 and to the service 198.51.100.20, and compare what ping prints.
First, predict
The neighbour 192.0.2.1 answers. What will ping to 198.51.100.20, the same neighbour's second address, print?
Now start the exercise, run the command and compare your prediction with the output.
Why did the client not send a single request to 198.51.100.20?
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pingruns undersudo, and with the same rights192.0.2.1answered. -
The requests never reached the neighbour:
pingprinted an error on the client at once, without sending anything.
198.51.100.20 is outside the client's subnet 192.0.2.0/24, and the client's routing table has no line for it.