Basic question on Host range

[news2010a]

Hi, imagine  in a given IP exercise I have only the following info:

"What is the network address and mask for the range of IP addresses:

32.9.55.105 to 32.9.55.106"

What is the logic that you use to resolve this? Mask was not given.

[meperuma · Accepted solution]

Hi, that's you should comeout with ip network address for the given 2 ip jost address range. Search for the doc in cisco.com which explains ip subnetting

"IP Addressing and Subnetting for New Use"

In your case it's a /30 address starting from .104/30 which is network address

105, 106 are host and 107 is broadcast address for this subnet

HTH

[news2010a]

Maybe I was complicating this. I think you assumed that 32.9.55.105 is the first host. Then if that is the first host, the subnet is:

32.9.55.104 and broadcast address is 32.9.55.107.

If it provides two valid hosts, then this thing must be a /30. And subnet mask is 255.255.255.252.

I was freaking out because I thought, what if they just give me any given two IP addresses but they are not the full sequence of IP's... In that case it may be unsolvable then.

Eh, eh. Thanks!

32.9.55.105 to 32.9.55.106"