Solved

Posted on 2010-09-20
1,015 Views
Hi,

I have IP address 10.180.10.18 and subnet 255.192.0.0.
What?
size of the network part of the address
size of subnet part of the address
size of host part
number of host per subnet
subnet number
range of valid ip address in this network

Thanks,
JT
0
Question by:jtran007
• 2
• 2

LVL 16

Expert Comment

ID: 33714864
http://www.subnet-calculator.com/subnet.php?net_class=A

Network address is 10 bit - 10.128.0.0/10
Subnet part is 2 bit
Host part is the remaining 22 bits (32 - 10)
There are 4194302 hosts per subnet
Not sure about subnet number, but probably it is the third subnet from four (previous beeing 10.0.0.0/10, 10.64.0.0/10 and next 10.192.0.0/10)
Range of IP addresses is 10.128.0.1 - 10.191.255.254

0

LVL 2

Expert Comment

ID: 33714982
size of the network part of the address 16581375
size of subnet part of the address 4161600
size of host part 4161600
number of host per subnet 4161600
subnet number 10.128.0.0
range of valid ip address in this network 10.128.0.0-10.191.255.255
0

Author Comment

ID: 33725471
Hi,

Thanks for giving the website to calculate, but could you
show me how you come up with this answer?

Many thanks,
JT
0

LVL 16

Accepted Solution

Blaz earned 250 total points
ID: 33725797
255.192.0.0 is in binary form 11111111.11000000.00000000.00000000 and
10.180.10.18 is in binary form 00001010.10110100.00001010.00010010

> Network address is 10 bit - 10.128.0.0/10
There are (first) 10 bits set in binary form of subnet/netmask. If you make an bitwise AND operation between your host number and the subnet mask you get 10.128.0.0 which is your network.

> Subnet part is 2 bit
First 8 bits (of the 10) denote an A class address, next two bits can be considered subnet part.

> Host part is the remaining 22 bits (32 - 10)
And the 22 zeroes in the subnet (if writing out all 8 bits of each number)

> There are 4194302 hosts per subnet
If you have 22 bits for host part, then you have 2^22 = 4194304 possible IPs
First IP is reserved for the network address and the last IP for broadcast address. So there are 4194302 IP addresses left for hosts.

> Not sure about subnet number, but probably it is the third subnet from four (previous beeing 10.0.0.0/10, 10.64.0.0/10 and next 10.192.0.0/10)
Given that the two bits in second octet denote the subnet, you can construct 4 subnets: 10.0.0.0/10, 10.64.0.0/10, 10.128.0.0/10, 10.192.0.0/10

> Range of IP addresses is 10.128.0.1 - 10.191.255.254
0

Author Closing Comment

ID: 33733090
Thanks
JT
0

## Featured Post

### Suggested Solutions

Is my Machine open to hackers 3 77
iptables ubuntu BLOCK all 2 75
suspending the anti virus 6 104
Questions on windows ports 13 65
To setup a SonicWALL for policy based routing to be used with the Websense Content Gateway there are several steps that need to be completed. Below is a rough guide for accomplishing this. One thing of note is this guide is intended to assist in the…
The DROP (Spamhaus Don't Route Or Peer List) is a small list of IP address ranges that have been stolen or hijacked from their rightful owners. The DROP list is not a DNS based list.  It is designed to be downloaded as a file, with primary intention…
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…
This video explains how to create simple products associated to Magento configurable product and offers fast way of their generation with Store Manager for Magento tool.