Question

You have a network that spans 6 different sites, each of which has its own data network, each site has a network operator that takes care of the “sub”-network under his/her control.

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You have a network that spans 6 different sites, each of which has its own data network, each site has a network operator that takes care of the “sub”-network under his/her control. Current situation: Site Network ID Subnet Mask # of Departments PC /Dept Site 1: NetID: 152.24.48.0 Mask: 255.255.248.0 4 Departments: 180, 50, 240, 100 Site 2: NetID: 152.24.56.0 Mask: 255.255.248.0 5 Departments: 90, 110, 150, 130, 250 Site 3: NetID: 152.24.64.0 Mask: 255.255.252.0 4 Departments: 70, 110, 90, 90 Site 4: NetID: 152.24.68.0 Mask: 255.255.252.0 4 Departments: 70, 110, 90, 90 Site 5: NetID: 152.24.72.0 Mask: 255.255.248.0 6 Departments: 90, 100, 80, 110, 160, 190 Site 6: NetID: 152.24.80.0 Mask: 255.255.254.0 3 Departments: 260, 40, 30 Assignment:  Redesign the IP addressing scheme to cover all sites with the simplest routing scheme possible.  Draw a block diagram of the new network sites, place the main routers and IP blocks as well.

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Answer #1

Site 1
***********

The network 152.24.48.0/21 has 2046 hosts.
Your subnets need 570 hosts.

Name Hosts Needed Hosts Available Unused Hosts Network Address Slash Mask Usable Range Broadcast
Department3 240 254 14 152.24.48.0 /24 255.255.255.0 152.24.48.1 - 152.24.48.254 152.24.48.255
Department1 180 254 74 152.24.49.0 /24 255.255.255.0 152.24.49.1 - 152.24.49.254 152.24.49.255
Department4 100 126 26 152.24.50.0 /25 255.255.255.128 152.24.50.1 - 152.24.50.126 152.24.50.127
Department2 50 62 12 152.24.50.128 /26 255.255.255.192 152.24.50.129 - 152.24.50.190 152.24.50.191

Site 2
*******

The network 152.24.56.0/21 has 2046 hosts.
Your subnets need 730 hosts.

Name Hosts Needed Hosts Available Unused Hosts Network Address Slash Mask Usable Range Broadcast
Department5 250 254 4 152.24.56.0 /24 255.255.255.0 152.24.56.1 - 152.24.56.254 152.24.56.255
Department3 150 254 104 152.24.57.0 /24 255.255.255.0 152.24.57.1 - 152.24.57.254 152.24.57.255
Department4 130 254 124 152.24.58.0 /24 255.255.255.0 152.24.58.1 - 152.24.58.254 152.24.58.255
Department2 110 126 16 152.24.59.0 /25 255.255.255.128 152.24.59.1 - 152.24.59.126 152.24.59.127
Department1 90 126 36 152.24.59.128 /25 255.255.255.128 152.24.59.129 - 152.24.59.254 152.24.59.255

Site 3
*********

The network 152.24.65.0/22 has 1022 hosts.
Your subnets need 360 hosts.

Name Hosts Needed Hosts Available Unused Hosts Network Address Slash Mask Usable Range Broadcast
Department2 110 126 16 152.24.64.0 /25 255.255.255.128 152.24.64.1 - 152.24.64.126 152.24.64.127
Department3 90 126 36 152.24.64.128 /25 255.255.255.128 152.24.64.129 - 152.24.64.254 152.24.64.255
Department4 90 126 36 152.24.65.0 /25 255.255.255.128 152.24.65.1 - 152.24.65.126 152.24.65.127
Department1 70 126 56 152.24.65.128 /25 255.255.255.128 152.24.65.129 - 152.24.65.254 152.24.65.255

Site 4
*********

The network 152.24.68.0/22 has 1022 hosts.
Your subnets need 360 hosts.

Name Hosts Needed Hosts Available Unused Hosts Network Address Slash Mask Usable Range Broadcast
Department2 110 126 16 152.24.68.0 /25 255.255.255.128 152.24.68.1 - 152.24.68.126 152.24.68.127
Department3 90 126 36 152.24.68.128 /25 255.255.255.128 152.24.68.129 - 152.24.68.254 152.24.68.255
Department4 90 126 36 152.24.69.0 /25 255.255.255.128 152.24.69.1 - 152.24.69.126 152.24.69.127
Department1 70 126 56 152.24.69.128 /25 255.255.255.128 152.24.69.129 - 152.24.69.254 152.24.69.255

Site 5
*******

The network 152.24.72.0/21 has 2046 hosts.
Your subnets need 730 hosts.

Name Hosts Needed Hosts Available Unused Hosts Network Address Slash Mask Usable Range Broadcast
Department6 190 254 64 152.24.72.0 /24 255.255.255.0 152.24.72.1 - 152.24.72.254 152.24.72.255
Department5 160 254 94 152.24.73.0 /24 255.255.255.0 152.24.73.1 - 152.24.73.254 152.24.73.255
Department4 110 126 16 152.24.74.0 /25 255.255.255.128 152.24.74.1 - 152.24.74.126 152.24.74.127
Department2 100 126 26 152.24.74.128 /25 255.255.255.128 152.24.74.129 - 152.24.74.254 152.24.74.255
Department1 90 126 36 152.24.75.0 /25 255.255.255.128 152.24.75.1 - 152.24.75.126 152.24.75.127
Department3 80 126 46 152.24.75.128 /25 255.255.255.128 152.24.75.129 - 152.24.75.254 152.24.75.255

Site 6
********

The network 152.24.80.0/22 has 1022 hosts.
Your subnets need 330 hosts.

Name Hosts Needed Hosts Available Unused Hosts Network Address Slash Mask Usable Range Broadcast
Department1 260 510 250 152.24.80.0 /23 255.255.254.0 152.24.80.1 - 152.24.81.254 152.24.81.255
Department2 40 62 22 152.24.82.0 /26 255.255.255.192 152.24.82.1 - 152.24.82.62 152.24.82.63
Department3 30 30 0 152.24.82.64 /27 255.255.255.224 152.24.82.65 - 152.24.82.94 152.24.82.95

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