Hewlett-Packard ProCurve NAC 800 Users Manual
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Brand: HP
Category: Gateway
Type: Operation & user’s manual for HP ProCurve NAC 800
Pages: 591 (8.37 Mb)
System Administration
Entering Networks Using CIDR Format
15-14
Entering Networks Using CIDR Format
Networks and network endpoints can be specified in NAC 800 using Classless
Inter Domain Routing (CIDR) format. CIDR is a commonly used method for
specifying Internet objects. table 15-3 presents common CIDR naming con-
ventions.
Block Netmask Networks Hosts
/32 255.255.255.255 1/256 of a Class C Network 1
/31 255.255.255.254 1/128 2
/30 255.255.255.252 1/64 4
/29 255.255.255.248 1/32 8
/28 255.255.255.240 1/16 16
/27 255.255.255.224 1/8 32
/26 255.255.255.192 1/4 64
/25 255.255.255.128 1/2 128
/24 255.255.255.0 1 Class C network 256
/23 255.255.254.0 2 Class C networks 512
/22 255.255.252.0 4 Class C networks 1,024
/21 255.255.248.0 8 Class C networks 2,048
/20 255.255.240.0 16 Class C networks 4,096
/19 255.255.224.0 32 Class C networks 8,192
/18 255.255.192.0 64 Class C networks 16,384
/17 255.255.128.0 128 Class C networks 32,768
/16 255.255.0.0 1 Class B network 65,536
/15 255.254.0.0 2 Class B networks 131,072
/14 255.252.0.0 3 Class B networks 262,144
/13 255.248.0.0 8 Class B networks 512,000
Table 15-3. CIDR Naming Conventions