16.6 Entering Networks Using CIDR Format
Networks and network endpoints can be specified in Novell ZENworks Network Access Control using Classless Inter Domain Routing (CIDR) format. CIDR is a commonly used method for specifying Internet objects. Table 16-2 presents common CIDR naming conventions.
Table 16-2 CIDR Naming Conventions
|
/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 |