Based on the information in the graphic shown, design a network addressing schem

Question

 

 

Based on the information in the graphic shown, design a network addressing scheme that will supply the minimum number of subnets and allow enough extra subnets and hosts for 110% growth in all areas.


1. Minimum number of subnets needed =
2. Extra subnets required for 110% growth (round up to the next whole number) +
3. Total number of subnets needed =
4. Number of host addresses in the largest subnet group
5. Number of addresses needed for 110% growth in the largest subnet
(round up to the next whole number) +
6. Total number of addresses needed for the largest subnet =
7. Address class
8. Default subnet mask
9. Customer subnet mask
10. Prefix
11. Total number of subnets
12. Total number of host addresses
13. Total number of [usable] host addresses per subnet
14. Number of bits borrowed

 

 

 

- allocate subnets stating from the beginning of the address block, excluding subnet zero

 

 

 

- allocate adress in order from the largest to the smallest subnet

 

 

 

- do not use subnet zero

 

 

 

15. IP address range for Sales/Management

 

 

 

16. IP address range for Marketing

 

 

 

17. IP address range for Research

 

 

 

18. IP address range for Router A to Router B serial connection

 

 

 

19. IP address range for the 14th subnet

the network address; 174.18.0.0 Based on the information in the graphic shown, design a network addressing scheme that will supply the minimum number of subnets and allow enough extra subnets and hosts for 110% growth in all areas. 1. Minimum number of subnets needed = 2. Extra subnets required for 110% growth (round up to the next whole number) + 3. Total number of subnets needed = 4. Number of host addresses in the largest subnet group 5. Number of addresses needed for 110% growth in the largest subnet (round up to the next whole number) + 6. Total number of addresses needed for the largest subnet = 7. Address class 8. Default subnet mask 9. Customer subnet mask 10. Prefix 11. Total number of subnets 12. Total number of host addresses 13. Total number of [usable] host addresses per subnet 14. Number of bits borrowed - allocate subnets stating from the beginning of the address block, excluding subnet zero - allocate adress in order from the largest to the smallest subnet - do not use subnet zero 15. IP address range for Sales/Management 16. IP address range for Marketing 17. IP address range for Research 18. IP address range for Router A to Router B serial connection

Explanation / Answer

• Minimum number of subnets needed = 4 Router A – 1 subnet, Router B – 2 subnets, between Router and B – 1 subnet) • Extra subnets required for 110% growth = 5 [110% of 4 subnets = 4.4 = 5 (rounded)] • Total number of subnets needed = 9 (4 + 5 (Extra) = 9) • Number of host addresses in the largest subnet group = 140 (largest subnet group with more number of hosts is subnet group connected to Router A. It has 115 hosts (sales) + 25 hosts (management) = 140) • Number of addresses needed for 110% growth in the largest subnet = 154 (no.of hosts in largest subnet = 140. 110% of 140 = 154) • Total number of addresses needed for the largest subnet = 294 (140 + 154 (Extra)) From the figure in the answer provided, the IP address is taken as 172.16.0.0 for instance. • Address class = B (Given address is 172.16.0.0; 172 comes under the class B address range) • Default subnet mask is 255.255.0.0 (for class B) • Custom subnet mask is 255.255.240.0 (total subnets needed = 9; 4 bits are needed for subnet ID to accommodate 9 subnets. So the leftmost 4 bits of subnet ID are set as 1s). Default subnet mask 11111111 11111111 00000000 00000000 (255.255.0.0) 11111111 11111111 11110000 00000000 (255.255.240.0) • Total number of host addresses = 231 (115 + 25 + 56 + 35) • Number of bits borrowed = 8 (To accommodate 231 addresses 8 bits) For the remaining bits please provide the IP address in the question post it, so that we can help you.

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