I have network address with two routers as shown in the picture
if the address 12.12.12.1 is reserved as network address and 12.12.12.3 for the broadcast, how can I give the two routers interfaces addresses?
there is only one address available which is 12.12.12.2
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See the answers to this question.– Ron Maupin ♦Nov 8, 2018 at 21:02
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1 Answer
Welcome on this Stack Exchange. You made a small mistake in your IP subnet calculation. In 12.12.12.0/30, the 12.12.12.0 address is the network address, 12.12.12.1 and 12.12.12.2 are assignable to the routers and 12.12.12.3 is the broadcast address.
Please see this question and its answers for a more detailed explanation on IP subnet calculation.
answered Nov 8, 2018 at 20:38
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thank you , I will , but isn't this address in the picture the network address ? I didn't write it by my self , it is already in the question topology Nov 8, 2018 at 20:48
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2A /30 always has 2 usable addresses. I guess .1 was shown in the picture since that's the IP address of the interface of one of those routers.– Teun Vink ♦Nov 8, 2018 at 20:52