Question

HW1.pdf

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.

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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