Notation
IP addresses are written in dotted decimal notation. Each decimal group
(between the decimal points) is the decimal equivalent of 8 bits of the binary
address. Notice that the dotted decimal divisions do not exactly correspond
to the network, subnet, and host field divisions of the address. One address
field may cover more than one dotted decimal division. Or, the division
between address fields may not fall in the same place as a dotted decimal
division. It is recommended that subnet/host fields be allocated at a dotted
decimal division point (at a “byte boundary”) whenever possible.
IP Addresses
binary:
1000 0100
0000 0111
0011 0100
0001 0011
dotted decimal:
132.
7.
52.
19
address fields:
network
subnet
host
132.7
52
19
The address class can be determined by the first decimal number. This is
because the leftmost bits are assigned according to the address class:
For a class A address, the first digits are in the range 1 through 126
(leftmost bit is 0).
For a class B address, the first digits are in the range 128 through 191
(leftmost bits are 10).
For a class C address, the first digits are in the range 192 through 223
(leftmost bits are 110).
Address Range *
class A
0
1. x. x. x
through 126. x. x. x
8 bits
24 bits
class B
10
128. 1. x. x
through 191. 254. x. x
16 bits
16 bits
class C
110
192. 0. 1. x
through 223. 255. 254. x
24 bits
8 bits
* Some addresses are reserved and are not included in the ranges listed.
Internet Protocol Routing Service
IP Addressing Scheme
2-60
Summary of Contents for 600 Series
Page 1: ...Hewlett Packard Series 200 400 and 600 Routers HP Routing Services and Applications ...
Page 4: ......
Page 5: ...1 Product Notes ...
Page 6: ...Features of HP Routers Architecture and Technology Branch Office Routing Product Notes 1 2 ...
Page 38: ...Architecture and Technology Software Control Path Architecture 1 34 ...
Page 52: ...Branch Office Routing Future Directions 1 48 ...
Page 53: ...2 Routing Services Notes ...
Page 106: ...Bridging Service Traffic Prioritization 2 54 ...
Page 158: ...Novell IPX Routing Service NetBIOS Protocol Support 2 106 ...
Page 194: ...Data Compression for WAN Links Conclusion 2 142 ...
Page 195: ...3 Application Notes and Case Studies ...
Page 224: ...Improving Network Availability Application Recovery 3 30 ...
Page 234: ...ISDN Wide Area Network Design Dry Creek Joint Elem School District Performance 3 40 ...
Page 316: ......