Ip Address Syntax; Netmasks; Subnets; Table 4-1 Ip Address Classes And Number Of Network Bits - Lucent Technologies Stinger Compact Remote Getting Started Manual

Initial Stand-alone Configuration
Providing a basic system IP configuration

IP address syntax

The Stinger unit uses dotted decimal notation (not hexadecimal) for IP addresses.
Netmask information is appended to the IP address after a forward slash (/).

Netmasks

If no netmask is specified, the unit uses a default mask based on the class of the IP
address that is supplied. Table 4-1 shows address classes and the number of network
bits in the default mask for each class.
Table 4-1. IP address classes and number of network bits
Class
Class A
Class B
Class C
For example, a class C address, such as 198.5.248.40, has 24 network bits, leaving 8
bits for the host portion of the address. If no subnet mask is specified for a class C
address, the Stinger unit uses the default mask of 24 bits, as shown in Figure 4-5.
Figure 4-5.
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
By default, this address is displayed as 198.5.248.40/24.

Subnets

Subnets are permitted under the same syntax. A subnet address specifies a number of
network bits that does not adhere to the Class A, B, or C network limits. For example,
the following address specifies a 29-bit subnet:
ip-address = 198.5.248.40/29
In this address, 29 bits of the address are used to specify the network. The 3
remaining bits are used to specify eight addresses on the subnet. With 3 bits used to
specify hosts on a 29-bit subnet, eight different bit combinations are possible. Of
those eight possible host addresses, two are reserved:
000 — Reserved for the network (base address)
001
010
100
110
101
4-10
Address range
0.0.0.0 through 127.255.255.255
128.0.0.0 through
191.255.255.255
192.0.0.0 through
223.255.255.255
Default netmask for class C IP address
Default 24 bits
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Default network
bits
8
16
24