How Does A Device Obtain An Ip Address And Subnet Mask; Dhcp Addressing; Static Addressing - Pirelli P.RG F4202N User Manual

Fiber optic intergrated access device

Table of Contents

Type Two

In larger networks, where there are more devices, the IP address of '192.168.10.8' is, again, split into two

parts but is structured differently:

 Part one ('192.168') identifies the network on which the device resides.

 Part two ('.10.8') identifies the device within the network.

This type of IP Address operates on a subnet mask of '255.255.0.0'.

How does a Device Obtain an IP Address and Subnet Mask?

There are three different ways to obtain an IP address and the subnet mask. These are:

 Dynamic Host Configuration Protocol (DHCP) Addressing

 Static Addressing

 Automatic Addressing (Auto-IP Addressing)

The Router contains a DHCP server, which allows computers on your network to obtain an IP address and

subnet mask automatically. DHCP assigns a temporary IP address and subnet mask which gets reallocated

once you disconnect from the network.

DHCP will work on any client Operating System. Also, using DHCP means that the same IP address and

subnet mask will never be duplicated for devices on the network. DHCP is particularly useful for networks

with large numbers of users on them.

You must enter an IP Address and the subnet mask manually on every device. Using a static IP and subnet

mask means the address is permanently fixed.

Auto-IP Addressing

Network devices use automatic IP addressing if they are configured to acquire an address using DHCP but

are unable to contact a DHCP server. Automatic IP addressing is a scheme where devices allocate them-

selves an IP address at random from the industry standard subnet of 169.254.x.x (with a subnet mask of

255.255.0.0). If two devices allocate themselves the same address, the conflict is detected and one of the

devices allocates itself a new address. Automatic IP addressing support was introduced by Microsoft in the

Windows 98 operating system and is also supported in Windows 2000 and Windows XP.

142

HBK 939800036-A1

Table of Contents

Show Quick Links

Table of Contents