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subnetting question

kumarsantosh
Level 1
Level 1

hi all,

my network is 61.17.99.0/255.255.255.128.now i want this network to divide in 2 subnet.in first subnet i want 8 host and rest are in another one.pls tell me the subnet address,host address and network address for these two subnet.

santosh

2 Replies 2

Hello,

you can only create subnets of the same size, unfortunately. So even if you only have 8 hosts in your subnet, the subnet will have to be the same size as the other subnets you create, which means that you will waste address space if you indeed have only 8 hosts.

In your case, to subnet network 61.17.99.0/25 into two networks, you will end up with networks:

61.17.99.0/26

Network Address: 61.17.99.0

Hosts: from 61.17.99.1 thru 61.17.99.62

Broadcast Address: 61.17.99.63

61.17.99.64/26

Network Address: 61.17.99.64

Hosts: from 61.17.99.65 thru 61.17.99.126

Broadcast Address: 61.17.99.127

Regards,

Georg

Hi,

It all depends on the criteria, i.e. must there be only 2 subnets, or must 1 subnet be capable of only 8 hosts, and the balance left for future subnetting?

61.17.99.0/26

Network Address: 61.17.99.0

Hosts: from 61.17.99.1 thru 61.17.99.62

Broadcast Address: 61.17.99.63

this will give you a fairly large subnet with 62 hosts, you could then further subnet 62.17.99.64/26 into 2 i.e.:

61.17.99.64/27

Network Address: 61.17.99.64

Hosts: from 61.17.99.65 thru 61.17.99.94

Broadcast Address: 61.17.99.95

giving 30 hosts in this subnet, then taking the rest and subnetting further:

61.17.99.96/28

Network Address: 61.17.99.96

Hosts: from 61.17.99.97 thru 61.17.99.110

Broadcast Address: 61.17.99.111

giving 14 hosts in this subnet, finally:

61.17.99.112/29

Network Address: 61.17.99.112

Hosts: from 61.17.99.113 thru 61.17.99.118

Broadcast Address: 61.17.99.119

giving only 6 hosts in this subnet and the next, or if you needed some point to point link addresses, you could subnet even further, but Georg is correct in that when you split the network in 2, you are left with 2 equal halves, you can still further split the one half, leaving 2 equal halves once more....

HTH

Keith

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