紙言

Key Memory Tricks for /29 Subnets: cheat sheet table of all 32 /29 subnets from 183.1





Step-by-Step Method (works for any range)
  1. Write the given network (e.g., 183.178.123.0/24).
  2. Find block size:
    • Formula: 2(32−prefix length)
    • For /29 → 2(32−29)=23=8 addresses per subnet.

  3. Calculate number of subnets:
    • Divide total addresses in the base network by block size.
    • /24 has 256 addresses → 256 ÷ 8 = 32 subnets.

  4. Generate subnets:
    • Start at the base (183.178.123.0).
    • Add block size (8) each time in the last octet: 0, 8, 16, 24… until 248.

  5. Find broadcast: Network + (block size – 1).
    • Example: 0 + 7 = 7 → broadcast.

  6. Find usable range: Between network+1 and broadcast–1.




    • Example: 1–6 for the first subnet.
       Subnet #NetworkUsable RangeBroadcast1183.178.123.0183.178.123.1 – 183.178.123.6183.178.123.72183.178.123.8183.178.123.9 – 183.178.123.14183.178.123.153183.178.123.16183.178.123.17 – 183.178.123.22183.178.123.234183.178.123.24183.178.123.25 – 183.178.123.30183.178.123.315183.178.123.32183.178.123.33 – 183.178.123.38183.178.123.396183.178.123.40183.178.123.41 – 183.178.123.46183.178.123.477183.178.123.48183.178.123.49 – 183.178.123.54183.178.123.558183.178.123.56183.178.123.57 – 183.178.123.62183.178.123.639183.178.123.64183.178.123.65 – 183.178.123.70183.178.123.7110183.178.123.72183.178.123.73 – 183.178.123.78183.178.123.7911183.178.123.80183.178.123.81 – 183.178.123.86183.178.123.8712183.178.123.88183.178.123.89 – 183.178.123.94183.178.123.9513183.178.123.96183.178.123.97 – 183.178.123.102183.178.123.10314183.178.123.104183.178.123.105 – 183.178.123.110183.178.123.11115183.178.123.112183.178.123.113 – 183.178.123.118183.178.123.11916183.178.123.120183.178.123.121 – 183.178.123.126183.178.123.12717183.178.123.128183.178.123.129 – 183.178.123.134183.178.123.13518183.178.123.136183.178.123.137 – 183.178.123.142183.178.123.14319183.178.123.144183.178.123.145 – 183.178.123.150183.178.123.15120183.178.123.152183.178.123.153 – 183.178.123.158183.178.123.15921183.178.123.160183.178.123.161 – 183.178.123.166183.178.123.16722183.178.123.168183.178.123.169 – 183.178.123.174183.178.123.17523183.178.123.176183.178.123.177 – 183.178.123.182183.178.123.18324183.178.123.184183.178.123.185 – 183.178.123.190183.178.123.19125183.178.123.192183.178.123.193 – 183.178.123.198183.178.123.19926183.178.123.200183.178.123.201 – 183.178.123.206183.178.123.20727183.178.123.208183.178.123.209 – 183.178.123.214183.178.123.21528183.178.123.216183.178.123.217 – 183.178.123.222183.178.123.22329183.178.123.224183.178.123.225 – 183.178.123.230183.178.123.23130183.178.123.232183.178.123.233 – 183.178.123.238183.178.123.23931183.178.123.240183.178.123.241 – 183.178.123.246183.178.123.24732183.178.123.248183.178.123.249 – 183.178.123.254183.178.123.255 


已有 0 人追稿

登入

用戶登入