real life subnet question
ja5983
Member Posts: 129
in CCNA & CCENT
IP 41.142.215.131
subnet 255.255.255.248
that = 41.142.215.130/30 since 70 is class A...
so that should be 2 hosts and 2 subnets right?
so how is it possible for the subnet range to be
41.142.215.130-37?
(these arent actually the IPs i changed them a little...but the class is the same and it seemed odd to me...)
subnet 255.255.255.248
that = 41.142.215.130/30 since 70 is class A...
so that should be 2 hosts and 2 subnets right?
so how is it possible for the subnet range to be
41.142.215.130-37?
(these arent actually the IPs i changed them a little...but the class is the same and it seemed odd to me...)
Josh
A+, Network+, Server+, Security+, TICSA, CCNA, MCSA, AS Network Engineering
A+, Network+, Server+, Security+, TICSA, CCNA, MCSA, AS Network Engineering
Comments
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dmaftei
Member Posts: 83 ■■□□□□□□□□
You're subnetting a class A network by borrowing 8 + 8 + 5 = 21 bits from the host part. That gives you 2^21 = 2097152 subnets (including all-zeros and all-ones), with 2^3 = 8 IP addresses per subnet, hence the 130-137 range.ja5983 wrote:IP 41.142.215.131
subnet 255.255.255.248BSEE, MSCS
www.maftei.net -
ja5983
Member Posts: 129
ahh...i need to look more carefully..thanks!Josh
A+, Network+, Server+, Security+, TICSA, CCNA, MCSA, AS Network Engineering -
lAwBoY
Member Posts: 30 ■■□□□□□□□□
i thought the range should be 128-136
where valid host is 129-135
correct me if i am wrong -
ja5983
Member Posts: 129
depends if you do 2^x=x or 2^x-2=xJosh
A+, Network+, Server+, Security+, TICSA, CCNA, MCSA, AS Network Engineering -
dmaftei
Member Posts: 83 ■■□□□□□□□□
You're right.lAwBoY wrote:i thought the range should be 128-136BSEE, MSCS
www.maftei.net
