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SUBNETTING

SUBNETTING. Example – 1. Class C : N . N . N . H 110xxxxx . xxxxxxxx . xxxxxxxx . xxxxxxxx Class C : 192.168.1.0 No. of Subnet = 2 n – 2 = 2 1 – 2 = 2 – 2 = 0 Subnet. 110xxxxx . xxxxxxxx . xxxxxxxx . x xxxxx.

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SUBNETTING

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  1. SUBNETTING

  2. Example – 1 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Subnet • = 2n – 2 • = 21 – 2 • = 2 – 2 • = 0 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxx • One bit masking is Invalid, You are not getting any networks when you convert 1 host bit to network bit. HELP

  3. Example – 2 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Subnet • = 2n – 2 • = 22 – 2 • = 4 – 2 • = 2 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 26 – 2 • = 64 – 2 • = 62 Hosts/Subnet HELP

  4. 255. 255. 255. 192 Valid Subnets Example – 2 (Continued…) If you convert 2 Host Bits to Network Bits 2 Subnet & 62 Hosts/Subnet Customize Subnet Mask 255.255.255.192 Subnet Range 192.168.1.64 to 192.168.1.127 192.168.1.128 to 192.168.1.191 • Customize Subnet Mask = 11111111. 11111111. 11111111. 11000000 128 64 64 • Range of Networks • Network ID Broadcast ID • 192.168.1.0 x – 192.168.1.63 192.168.1.64 – 192.168.1.127 192.168.1.128 – 192.168.1.191 x 192.168.1.192 – 192.168.1.255

  5. Example – 3 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Subnet • = 2n – 2 • = 25 – 2 • = 32 – 2 • = 30 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 23 – 2 • = 8 – 2 • = 6 Hosts/Subnet HELP

  6. If you convert 5 Host Bits to Network Bits 30 Subnet & 6 Hosts/Subnet Customize Subnet Mask 255.255.255.248 Subnet Range 192.168.1.8 to 192.168.1.15 192.168.1.16 to 192.168.1.23 192.168.1.24 to 192.168.1.31 192.168.1.32 to 192.168.1.39 192.168.1.240 to 192.168.1.247 255. 255. 248 255. Valid Subnets Example – 3 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 11111111. 11111000 128 64 32 16 8 8 • Range of Networks • Network ID Broadcast ID • 192.168.1.0 x – 192.168.1.7 192.168.1.8 – 192.168.1.15 192.168.1.16 – 192.168.1.23 192.168.1.24 – 192.168.1.31 192.168.1.240 – 192.168.1.247 192.168.1.248 – 192.168.1.255 x

  7. Example – 4 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Subnet • = 2n – 2 • = 26 – 2 • = 64 – 2 • = 62 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 22 – 2 • = 4 – 2 • = 2 Hosts/Subnet HELP

  8. If you convert 6 Host Bits to Network Bits 62 Subnet & 2 Hosts/Subnet Customize Subnet Mask 255.255.255.252 Subnet Range 192.168.1.4 to 192.168.1.7 192.168.1.8 to 192.168.1.11 192.168.1.12 to 192.168.1.15 192.168.1.16 to 192.168.1.19 192.168.1.248 to 192.168.1.251 255. 255. 255. 252 Valid Subnets Example – 4 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 11111111. 11111100 128 64 32 16 8 4 4 • Range of Networks • Network ID Broadcast ID • 192.168.1.0 x – 192.168.1.3 192.168.1.4 – 192.168.1.7 192.168.1.8 – 192.168.1.11 192.168.1.12 – 192.168.1.15 192.168.1.248 – 192.168.1.251 192.168.1.252 – 192.168.1.255 x

  9. Example – 5 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Subnet • = 2n – 2 • = 27 – 2 • = 128 – 2 • = 126 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 21 – 2 • = 2 – 2 = 0 Hosts/Subnet • In this case, You are not getting any host when you convert 7 host bit to network bit. HELP

  10. Example – 6 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Subnet • = 2n – 2 • = 28 – 2 • = 256 – 2 • = 254 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 20 – 2 • = 0 – 2 = -2 Hosts/Subnet • In this case, You are not getting any host when you convert 8 host bit to network bit. HELP

  11. Requirement of Hosts is 40 ? Example – 1 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Host • = 2h – 2  Req. of Host • = 26 – 2  40 (-2 is for Network ID & Broadcast ID) • = 64 – 2 • = 62 Hosts/Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Subnet • = 2n – 2 (-2 is for First & Last Subnet Range) • = 22 – 2 • = 4 – 2 • = 2 Subnet HELP

  12. 255. 255. 255. 192 Valid Subnets Example – 1 (Continued…) If you convert 2 Host Bits to Network Bits 2 Subnet & 62 Hosts/Subnet Customize Subnet Mask 255.255.255.192 Subnet Range 192.168.1.64 to 192.168.1.127 192.168.1.128 to 192.168.1.191 • Customize Subnet Mask = 11111111. 11111111. 11111111. 11000000 128 64 64 • Range of Networks • Network ID Broadcast ID • 192.168.1.0 x – 192.168.1.63 192.168.1.64 – 192.168.1.127 192.168.1.128 – 192.168.1.191 x 192.168.1.192 – 192.168.1.255

  13. Requirement of Hosts is 2 ? Example – 2 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Host • = 2h – 2  Req. of Host • = 22 – 2  2 (-2 is for Network ID & Broadcast ID) • = 4 – 2 • = 2 Hosts/Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Subnet • = 2n – 2 (-2 is for First & Last Subnet Range) • = 26 – 2 • = 64 – 2 • = 62 Subnet HELP

  14. 255. 255. 252 255. Valid Subnets Example – 2 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 11111111. 11111100 128 64 32 16 8 4 4 • Range of Networks • Network ID Broadcast ID • 192.168.1.0 x – 192.168.1.3 192.168.1.4 – 192.168.1.7 192.168.1.8 – 192.168.1.11 192.168.1.12 – 192.168.1.15 192.168.1.248 – 192.168.1.251 192.168.1.252 – 192.168.1.255 x

  15. Cisco / Notation Example – 1 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0/29 • Extra Network Bits = 29 – 24 = 5 • Put n value = 5 • No. of Subnet • = 2n – 2 • = 25 – 2 (-2 is for First & Last Subnet Range) • = 32 – 2 • = 30 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 23 – 2 • = 8 – 2 • = 6 Hosts/Subnet HELP

  16. If you convert 5 Host Bits to Network Bits 30 Subnet & 6 Hosts/Subnet Customize Subnet Mask 255.255.255.248 Subnet Range 192.168.1.8 to 192.168.1.15 192.168.1.16 to 192.168.1.23 192.168.1.24 to 192.168.1.31 192.168.1.32 to 192.168.1.39 192.168.1.240 to 192.168.1.247 255. 255. 248 255. Valid Subnets Example – 1 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 11111111. 11111000 128 64 32 16 8 8 • Range of Networks • Network ID Broadcast ID • 192.168.1.0 x – 192.168.1.7 192.168.1.8 – 192.168.1.15 192.168.1.16 – 192.168.1.23 192.168.1.24 – 192.168.1.31 192.168.1.240 – 192.168.1.247 192.168.1.248 – 192.168.1.255 x

  17. Cisco / Notation Example – 2 • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0/28 • Extra Network Bits = 28 – 24 = 4 • Put n value = 4 • No. of Subnet • = 2n – 2 • = 24 – 2 (-2 is for First & Last Subnet Range) • = 16 – 2 • = 14 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 24 – 2 • = 16 – 2 • = 14 Hosts/Subnet HELP

  18. If you convert 4 Host Bits to Network Bits 14 Subnet & 14 Hosts/Subnet Customize Subnet Mask 255.255.255.240 Subnet Range 192.168.1.16 to 192.168.1.31 192.168.1.32 to 192.168.1.47 192.168.1.48 to 192.168.1.63 192.168.1.64 to 192.168.1.80 192.168.1.224 to 192.168.1.239 255. 255. 255. 240 Valid Subnets Example – 2 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 11111111. 11110000 128 64 32 16 16 • Range of Networks • Network ID Broadcast ID • 192.168.1.0 x – 192.168.1.15 192.168.1.16 – 192.168.1.31 192.168.1.32 – 192.168.1.47 192.168.1.48 – 192.168.1.63 192.168.1.224 – 192.168.1.239 192.168.1.240 – 192.168.1.255 x

  19. Requirement of Networks is 2 ? Example – 1 • Class B : N.N.H.H • 10xxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class B : 172.16.0.0 • No. of Subnet • = 2n – 2  Req. of Subnet • = 22 – 2  2 (-2 is for First & Last Subnet Range) • = 4 – 2 • = 2 Subnet 10xxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 214 – 2 • = 16384 – 2 • = 16382 Hosts/Subnet HELP

  20. 255. 255. 192. 0 Valid Subnets Example – 1 (Continued…) If you convert 2 Host Bits to Network Bits 2 Subnet & 16382 Hosts/Subnet Customize Subnet Mask 255.255.192.0 Subnet Range 172.16.64.0 to 172.16.127.255 172.16.128.0 to 172.16.191.255 • Customize Subnet Mask = 11111111. 11111111. 11000000. 00000000 128 64 64 • Range of Networks • Network ID Broadcast ID • 172.16.0.0 x – 172.16.63.255 172.16.64.0 – 172.16.127.255 172.16.128.0 – 172.16.191.255 x 172.16.192.0 – 192.168.1.255

  21. Requirement of Hosts is 126 ? Example – 2 • Class B : N.N.H.H • 10xxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class B : 172.16.0.0 • No. of Host • = 2h – 2  Req. of Host • = 27 – 2  126 (-2 is for Network ID & Broadcast ID) • = 128 – 2 • = 126 Hosts/Subnet 10xxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Subnet • = 2n – 2 (-2 is for First & Last Subnet Range) • = 29 – 2 • = 512 – 2 • = 510 Subnet HELP

  22. If you convert 9 Host Bits to Network Bits 510 Subnet & 126 Hosts/Subnet Customize Subnet Mask 255.255.255.128 Subnet Range 172.16.0.128 to 172.16.0.255 172.16.1.0 to 172.16.1.127 172.16.1.128 to 172.16.1.255 172.16.2.0 to 172.16.2.127 172.16.255.0 to 172.16.255.127 255. 255. 255. 128 Valid Subnets Example – 2 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 11111111. 10000000 128 128 • Range of Networks • Network ID Broadcast ID • 172.16.0.0 x – 172.16.0.127 172.16.0.128 – 172.16.0.255 172.16.1.0 – 172.16.1.127 172.16.1.128 – 172.16.1.255 172.16.255.0 – 172.16.255.127 172.16.255.128 – 172.16.255.255 x

  23. Cisco / Notation Example – 3 • Class B : N.N.H.H • 10xxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class B : 172.16.0.0/22 • Extra Network Bits = 22 – 16 = 6 • Put n value = 6 • No. of Subnet • = 2n – 2 • = 26 – 2 (-2 is for First & Last Subnet Range) • = 64 – 2 • = 62 Subnet 10xxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 210 – 2 • = 1024 – 2 • = 1022 Hosts/Subnet HELP

  24. If you convert 6 Host Bits to Network Bits 62 Subnet & 1022 Hosts/Subnet Customize Subnet Mask 255.255.252.0 Subnet Range 172.16.4.0 to 172.16.7.255 172.16.8.0 to 172.16.11.255 172.16.12.0 to 172.16.15.255 172.16.16.0 to 172.16.19.255 172.16.248.0 to 172.16.251.255 255. 255. 0 252. Valid Subnets Example – 3 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 11111100. 00000000 128 64 32 16 8 4 4 • Range of Networks • Network ID Broadcast ID • 172.16.0.0 x – 172.16.3.255 172.16.4.0 – 172.16.7.255 172.16.8.0 – 172.16.11.255 172.16.12.0 – 172.16.15.255 172.16.248.0 – 172.16.251.255 172.16.252.0 – 172.16.255.255 x

  25. Requirement of Networks is 500 ? Example – 1 • Class A : N.H.H.H • 0xxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class A : 10.0.0.0 • No. of Subnet • = 2n – 2  Req. of Subnet • = 29 – 2  500 (-2 is for First & Last Subnet Range) • = 512 – 2 • = 510 Subnet 0xxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 215 – 2 • = 32768 – 2 • = 32766 Hosts/Subnet HELP

  26. If you convert 9 Host Bits to Network Bits 510 Subnet & 32766 Hosts/Subnet Customize Subnet Mask 255.255.128.0 Subnet Range 10.0.128.0 to 10.0.255.255 10.1.0.0 to 10.1.127.255 10.1.128.0 to 10.1.255.255 10.2.0.0 to 10.2.127.255 10.255.0.0 to 10.255.127.255 255. 255. 0 128. Valid Subnets Example – 1 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 10000000. 00000000 128 128 • Range of Networks • Network ID Broadcast ID • 10.0.0.0 x – 10.0.127.255 10.0.128.0 – 10.0.255.255 10.1.0.0 – 10.1.127.255 10.1.128.0 – 10.1.255.255 10.255.0.0 – 10.255.127.255 10.255.128.0 – 10.255.255.255 x

  27. Requirement of Hosts is 260000 ? Example – 2 • Class A : N.H.H.H • 0xxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class A : 10.0.0.0 • No. of Host • = 2h – 2  Req. of Host • = 218 – 2  260000 (-2 is for Network ID & Broadcast ID) • = 262144 – 2 • = 262142 Hosts/Subnet 0xxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Subnet • = 2n – 2 (-2 is for First & Last Subnet Range) • = 26 – 2 • = 64 – 2 • = 62 Subnet HELP

  28. If you convert 6 Host Bits to Network Bits 62 Subnet & 262142 Hosts/Subnet Customize Subnet Mask 255.252.0.0 Subnet Range 10.4.0.0 to 10.3.255.255 10.8.0.0 to 10.7.255.255 10.12.0.0 to 10.15.255.255 10.16.0.0 to 10.19.255.255 10.248.0.0 to 10.251.255.255 255. 252. 0. 0 Valid Subnets Example – 2 (Continued…) • Customize Subnet Mask = 11111111. 11111100. 00000000. 00000000 128 64 32 16 8 4 4 • Range of Networks • Network ID Broadcast ID • 10.0.0.0 x – 10.3.255.255 10.4.0.0 – 10.7.255.255 10.8.0.0 – 10.11.255.255 10.12.0.0 – 10.15.255.255 10.248.0.0 – 10.251.255.255 10.252.0.0 – 10.255.255.255 x

  29. Cisco / Notation Example – 3 • Class A : N.H.H.H • 0xxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class B : 10.0.0.0/20 • Extra Network Bits = 20 – 8 = 12 • Put n value = 12 • No. of Subnet • = 2n – 2 • = 212 – 2 (-2 is for First & Last Subnet Range) • = 4096 – 2 • = 4094 Subnet 0xxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 212 – 2 • = 4096 – 2 • = 4094 Hosts/Subnet HELP

  30. If you convert 12 Host Bits to Network Bits 4094 Subnet & 4094 Hosts/Subnet Customize Subnet Mask 255.255.240.0 Subnet Range 10.0.16.0 to 10.31.255.255 10.0.32.0 to 10.47.255.255 10.0.48.0 to 10.63.255.255 10.0.64.0 to 10.79.255.255 10.255.224.0 to 10.255.239.255 255. 255. 240. 0 Valid Subnets Example – 3 (Continued…) • Customize Subnet Mask = 11111111. 11111111. 11110000. 00000000 128 64 32 16 16 • Range of Networks • Network ID Broadcast ID • 10.0.0.0 x – 10.0.15.255 10.0.16.0 – 10.0.31.255 10.0.32.0 – 10.0.47.255 10.0.48.0 – 10.0.63.255 10.255.224.0 – 10.255.239.255 10.255.240.0 – 10.255.255.255 x

  31. VLSM • Subnetting a subnet is called as Variable Length Subnet Mask • VLSMs provide the capability to include more than one subnet mask within a major network

  32. Scenario • ZOOM Technologies is having 100 PC • ZOOM Technologies – 192.168.1.0/24 • – MCSE • – CISCO • – FIREWALL • – SOLARIS • – TRAINING • Administrator wants inter-department communication should not be possible ? • What is best the solution ? • Answer : You will go for FLSM i.e. Subnetting

  33. ZOOM Technologies • – MCSE • – CISCO • – Ccna • – Ccnp • – FIREWALL • – ISA • – Checkpoint • – Net SQ • – Clavister • – Cisco PIX • – SOLARIS • – Linux • – Unix • – Solaris • – TRAINING Scenario (…continued) Now we are also having sub departments

  34. ZOOM Technologies • – MCSE • – CISCO • – Ccna • – Ccnp • – FIREWALL • – ISA • – Checkpoint • – Net SQ • – Clavister • – Cisco PIX • – SOLARIS • – Linux • – Unix • – Solaris • – TRAINING Scenario (…continued) Now we are also having sub departments

  35. Scenario (…continued) • Administrator does not want inter-department communication in the sub departments ? • Answer : You will use the subnet range to further divide it into smaller ranges, this time its Subnetting of a Subnet i.e. VLSM.

  36. Calculation of FLSM • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.0 • No. of Subnet • = 2n – 2  Req. of Subnet • = 23 – 2  5 (-2 is for First & Last Subnet Range) • = 8 – 2 • = 6 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 25 – 2 • = 32 – 2 • = 30 Hosts/Subnet HELP

  37. 255. 255. 255. 224 Valid Subnets FLSM (Continued…) If you convert 3 Host Bits to Network Bits 6 Subnet & 30 Hosts/Subnet Customize Subnet Mask 255.255.255.224 Subnet Range 192.168.1.32 to 192.168.1.63. 192.168.1.64 to 192.168.1.95 192.168.1.96 to 192.168.1.127 192.168.1.128 to 192.168.1.159 192.168.1.160 to 192.168.1.191 192.168.1.192 to 192.168.1.223 • Customize Subnet Mask = 11111111. 11111111. 11111111. 11100000 128 64 32 32 • Range of Networks • Network ID Broadcast ID • 192.168.1.0 x 192.168.1.31 192.168.1.63 192.168.1.95 192.168.1.127 192.168.1.159 192.168.1.191 192.168.1.223 192.168.1.255 192.168.1.32 192.168.1.64 192.168.1.96 192.168.1.128 192.168.1.160 192.168.1.192 192.168.1.224 x

  38. ZOOM Technologies • – MCSE • – CISCO • – Ccna • – Ccnp • – FIREWALL • – ISA • – Checkpoint • – Net SQ • – Clavister • – Cisco PIX • – SOLARIS • – Linux • – Unix • – Solaris • – TRAINING 192.168.1.32 – 1.63/27 192.168.1.64 – 1.95/27 192.168.1.96 – 1.127/27 192.168.1.128 – 1.159/27 192.168.1.160 – 1.191/27 Assigning of the Ranges

  39. Calculation of VLSM for CISCO Dept. • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.64 • No. of Subnet • = 2n  Req. of Subnet • = 21  2 • = 2 • = 2 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 24 – 2 • = 16 – 2 • = 14 Hosts/Subnet HELP

  40. 255. 255. 240 255. Valid Subnets VLSM (Continued…) If you convert 1 more Host Bit to Network Bit 2 Subnet & 14 Hosts/Subnet Customize Subnet Mask 255.255.255.240 Subnet Range 192.168.1.64 to 192.168.1.79 192.168.1.80 to 192.168.1.95 • Customize Subnet Mask = 11111111. 11111111. 11111111. 11110000 128 64 32 16 16 • Range of Networks • Network ID Broadcast ID • 192.168.1.64 – 192.168.1.79 192.168.1.80 – 192.168.1.95

  41. ZOOM Technologies • – MCSE • – CISCO • – Ccna • – Ccnp • – FIREWALL • – ISA • – Checkpoint • – Net SQ • – Clavister • – Cisco PIX • – SOLARIS • – Linux • – Unix • – Solaris • – TRAINING 192.168.1.32 – 1.63/27 192.168.1.96 – 1.127/27 192.168.1.128 – 1.159/27 192.168.1.160 – 1.191/27 192.168.1.64 – 1.95/27 192.168.1.64 – 1.79/28 192.168.1.80 – 1.95/28 Assigning of the Ranges

  42. Calculation of VLSM for Firewall Dept. • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.96 • No. of Subnet • = 2n  Req. of Subnet • = 23  5 • = 8 • = 8 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 22 – 2 • = 4 – 2 • = 2 Hosts/Subnet HELP

  43. 255. 255. 252 255. Valid Subnets VLSM (Continued…) If you convert 3 more Host Bit to Network Bit 8 Subnet & 2 Hosts/Subnet Customize Subnet Mask 255.255.255.252 Subnet Range 192.168.1.96 to 192.168.1.99 192.168.1.100 to 192.168.1.103 192.168.1.104 to 192.168.1.107 192.168.1.108 to 192.168.1.111 192.168.1.112 to 192.168.1.115 192.168.1.116 to 192.168.1.119 192.168.1.120 to 192.168.1.123 192.168.1.124 to 192.168.1.127 • Customize Subnet Mask = 11111111. 11111111. 11111111. 11111100 8 4 4 128 64 32 16 • Range of Networks • Network ID Broadcast ID • 192.168.1.96 – 192.168.1.99 192.168.1.100 – 192.168.1.103 192.168.1.104 – 192.168.1.107 192.168.1.108 – 192.168.1.111 192.168.1.112 – 192.168.1.115 192.168.1.116 – 192.168.1.119 192.168.1.120 – 192.168.1.123 192.168.1.124 – 192.168.1.127

  44. ZOOM Technologies • – MCSE • – CISCO • – Ccna • – Ccnp • – FIREWALL • – ISA • – Checkpoint • – Net SQ • – Clavister • – Cisco PIX • – SOLARIS • – Linux • – Unix • – Solaris • – TRAINING 192.168.1.32 – 1.63/27 192.168.1.96 – 1.127/27 192.168.1.128 – 1.159/27 192.168.1.160 – 1.191/27 192.168.1.64 – 1.95/27 192.168.1.64 – 1.79/28 192.168.1.96 – 1.99/30 192.168.1.104 – 1.107/30 192.168.1.80 – 1.95/28 192.168.1.100 – 1.103/30 192.168.1.108 – 1.111/30 192.168.1.112 – 1.115/30 Assigning of the Ranges

  45. Calculation of VLSM for Solaris Dept. • Class C : N.N.N.H • 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • Class C : 192.168.1.128 • No. of Subnet • = 2n  Req. of Subnet • = 22  3 • = 4 • = 4 Subnet 110xxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx • No. of Host • = 2h – 2 (-2 is for Network ID & Broadcast ID) • = 23 – 2 • = 8 – 2 • = 6 Hosts/Subnet HELP

  46. 255. 255. 248 255. Valid Subnets VLSM (Continued…) If you convert 2 more Host Bit to Network Bit 4 Subnet & 6 Hosts/Subnet Customize Subnet Mask 255.255.255.248 Subnet Range 192.168.1.128 to 192.168.1.135 192.168.1.136 to 192.168.1.143 192.168.1.144 to 192.168.1.151 192.168.1.152 to 192.168.1.159 • Customize Subnet Mask = 11111111. 11111111. 11111111. 11111000 8 8 128 64 32 16 • Range of Networks • Network ID Broadcast ID • 192.168.1.128 – 192.168.1.135 192.168.1.136 – 192.168.1.143 192.168.1.144 – 192.168.1.151 192.168.1.152 – 192.168.1.159

  47. ZOOM Technologies • – MCSE • – CISCO • – Ccna • – Ccnp • – FIREWALL • – ISA • – Checkpoint • – Net SQ • – Clavister • – Cisco PIX • – SOLARIS • – Linux • – Unix • – Solaris • – TRAINING 192.168.1.32 – 1.63/27 192.168.1.96 – 1.127/27 192.168.1.128 – 1.159/27 192.168.1.160 – 1.191/27 192.168.1.64 – 1.95/27 192.168.1.104 – 1.107/30 192.168.1.96 – 1.99/30 192.168.1.128 – 1.135/29 192.168.1.64 – 1.79/28 192.168.1.144 – 1.51/29 192.168.1.112 – 1.115/30 192.168.1.80 – 1.95/28 192.168.1.100 – 1.103/30 192.168.1.136 – 1.143/29 192.168.1.108 – 1.111/30 Assigning of the Ranges

  48. VSNL ROUTER 192.168.1.0/24 1.32/27 1.160/27 1.144/29 1.64/27 1.128/27 1.64/28 1.136/29 1.96/27 1.79/28 1.128/29 1.96/30 1.112/30 1.100/30 1.108/30 1.104/30

  49. CIDR Classless Inter Domain Routing • It is reverse (inverse) of Subnetting • Combining of Multiple Networks to Single Networks • Converting Network Bits to Hosts Bits i.e. Converting 1’s into 0’s • Generally design for Class C networks • Easier Summarization • It is also known as Supernetting

  50. VSNL ROUTER 192.168.1.0/24 1.32/27 1.160/27 1.144/29 1.64/27 1.128/27 1.64/28 1.136/29 1.96/27 1.79/28 1.128/29 1.96/30 1.112/30 1.100/30 1.108/30 1.104/30

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