subneting question

dkblee · ‎12-03-2007

hi! If i were given the ip range of 144.207.128.0 Mask:255.255.192.0 and i would to subdivide this into another 15 subnets, how's the calculation be? Please advise. Thanks.

qwertys21 · ‎12-03-2007

HI hi

You will need the following

Number of subnets required: 16

Max number of host per subnet: 1022

Subnet mask in which the base network is to be subnetted: 255.255.252.0/22

No. Subnet Address Hosts From Hosts To Broadcast Address

0 144.207.128.0 144.207.128.1 144.207.131.254 144.207.131.255

1 144.207.132.0 144.207.132.1 144.207.135.254 144.207.135.255

2 144.207.136.0 144.207.136.1 144.207.139.254 144.207.139.255

3 144.207.140.0 144.207.140.1 144.207.143.254 144.207.143.255

4 144.207.144.0 144.207.144.1 144.207.147.254 144.207.147.255

5 144.207.148.0 144.207.148.1 144.207.151.254 144.207.151.255

6 144.207.152.0 144.207.152.1 144.207.155.254 144.207.155.255

7 144.207.156.0 144.207.156.1 144.207.159.254 144.207.159.255

8 144.207.160.0 144.207.160.1 144.207.163.254 144.207.163.255

9 144.207.164.0 144.207.164.1 144.207.167.254 144.207.167.255

10 144.207.168.0 144.207.168.1 144.207.171.254 144.207.171.255

11 144.207.172.0 144.207.172.1 144.207.175.254 144.207.175.255

12 144.207.176.0 144.207.176.1 144.207.179.254 144.207.179.255

13 144.207.180.0 144.207.180.1 144.207.183.254 144.207.183.255

14 144.207.184.0 144.207.184.1 144.207.187.254 144.207.187.255

15 144.207.188.0 144.207.188.1 144.207.191.254 144.207.191.255

Thanks

dkblee · ‎12-03-2007

hi! After implementing this /22 of subnet mask with 16 subnets & 1022 hosts, can i still use the option of lower number of subnet eg. /18 with 16384 hosts, /19 with 8192 hosts, /20 with 4096 hosts and /21 with 2048 hosts?

When they said /18 with 16384 of hosts that's given to me, does that mean that the 16384 hosts are inclusive of whatever total number of host within the possible sub divided subnet that i can have?

ajagadee · ‎12-03-2007

You can also use the Subnet Calculator on Cisco.com.

http://www.cisco.com/cgi-bin/apps/ipsbnt/home.pl

Regards,

Arul