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ManualsBrandsNortel Networks ManualsNetwork RouterNortel Networks Network Router BCM50a
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Appendix F IP subnetting 239
BCM50a Integrated Router Configuration — Advanced
5 255.255.248.0 (/21) 32 2046
6 255.255.252.0 (/22) 64 1022
7 255.255.254.0 (/23) 128 510
8 255.255.255.0 (/24) 256 254
9 255.255.255.128 (/25) 512 126
10 255.255.255.192 (/26) 1024 62
11 255.255.255.224 (/27) 2 048 30
12 255.255.255.240 (/28) 4096 14
13 255.255.255.248 (/29) 8192 6
14 255.255.255.252 (/30) 16 384 2
15 255.255.255.254 (/31) 32 768 1
Table 55 Class B subnet planning
No. “Borrowed” Host Bits Subnet Mask No. Subnets No. Hosts per Subnet