Partitioning a network address. Urgent help please Post: 302560075

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Special Forums IP Networking Partitioning a network address. Urgent help please Post 302560075 by bawse.c on Wednesday 28th of September 2011 07:57:39 PM

09-28-2011

Registered User

Partitioning a network address. Urgent help please

Hi,

I am trying to figure out a way to partition the departmental IP network address block to create a staff and a student subnet. Each of these will be identified by its own network address and netmask. It is university policy that you must be economical with the IP addresses. That is, the subnets must be as small as possible, but they must be large enough to accommodate the maximum number of hosts you were given.

Also, it is university policy that the respective gateway router to the outside
world should always be given the highest possible host IP address in the subnet.

The student subnet should have a higher IP network address than the staff subnet.

The network must be able to support up to 60 machines on the staff subnet (not counting the router) and up to 120 machines on the student subnet (also not counting the router).

IP address/netmask
University network address 127.158.128.0
University network mask 255.255.192.0
University internet gateway IP address 127.158.191.254
Department network mask 255.255.254.0
Department router address 127.158.129.254

Suppose that the network address of the departmental network is 127.158.128.0 (calculated by AND between Dep network mask and Dep router address)

I know that 60 machines would use 6 bits for the staff subnet.
the netmask of staff would be 255.255.255.192.

how can I figure out the the IP network address of the staff subnet.
I have worked out the range for the staff subnetwork.

127.158.128.0 - 127.158.128.63
127.158.128.1 = Gateway address
127.158.128.63 = Broadcast address

Now how can I calculate the IP network address of the staff subnet??

Please help its urgent

bawse.c

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ip6_setup

ip6_setup(8)						      System Manager's Manual						      ip6_setup(8)

NAME

       ip6_setup - IPv6 configuration program

SYNOPSIS

       /usr/sbin/ip6_setup

DESCRIPTION

       The ip6_setup utility allows you to configure the IPv6 networking software on your system.

       To run ip6_setup, enter the following command and then answer the questions: # ip6_setup

       You  must know your Internet Protocol Version 6 (IPv6) address. If your network uses subnet routing, you must know the subnet mask for your
       network.  The network manager should be able to provide you with the information that you need.

       After the ip6_setup command completes, the network services on the  system  can	be  restarted  manually  with  the  following  command:  #
       /usr/sbin/rcinet restart

       Before  you  restart  the  network  services  with  the preceding command, warn the users that the network services on the system are being
       removed.  File systems that were not mounted using the /etc/fstab file or the automount command must be unmounted with the unmount command.
       You must remount these file systems using the mount command after the network is started on your system.

       Alternatively, you can reboot the system with the following command: # /usr/sbin/shutdown -r now

FILES

       Specifies  the  host  name  file.  Specifies the environment variables that define the network configuration on your system.  Specifies the
       trusted hosts file.  Specifies the network name file.  Specifies Internet routing information.  Specifies Internet routing information.

SEE ALSO

       Commands: mount(8), rcinet(8)

       Files: gateways(4), hosts(4), hosts.equiv(4), networks(4), routes(4).

       Network Administration

																      ip6_setup(8)