Hi guys do you have any idea how to do the one I enclosed a red rectangle with on my screenshot? the step 1 instructions. please help I think it's not the normal thing that I do in our VLSM.

Attachments ddd.jpg 200.5 KB
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Last Post by JorgeM

So, you have been provided with the nework and are asked to subnet it to allow up to 60 hosts. To do this, we need to apply the correct subnet mask. If you use a /26 (, you can have up to 62 hosts on each subnet. With a /26, the will be broken into these subnets... - - - -

Keep in mind that each subnet has 64 IPs, but two are reserved (network ID and broadcast IP). If you need two subnets, use the middle two shown above. Each subnet will provide up to 62 usable host IPs.

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As an additional note to my previous post...the reason I indicated to use the middle two is that the first subnet has all 0's for the subnet ID and the last has all 1's in the subnet ID. This was problematic for older legacy routers. Not the case any longer. So most modern gear can handle the 4 subnets. Wasnt sure about your scenario, so if the question asks for no more than two subnets, i would pick the middle two to be able to address any legacy equipment. Hope that did not confuse you.


not a problem. hope that information helped you. Subnetting could be tricky and challenging to understand at first. Just do a few subnetting problems and it will be like riding a bike. Once you get it, it pretty easy to work with subnetting IPv4.

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