Qtech QSW-2870 [95/230] Chapter3

Qtech QSW-2870 [95/230] Chapter3
3-1
Chapter3
IP Service Configuration
3.1 Summary
This chapter introduces configurations of QSW-2870 Switch IP
services. This chapter includes the following section.
3.2 DHCP Configuration
3.2.1 DHCP Introduction
DHCP Background
The PC connected with Internet needs to know its IP address and other information
before sending or receiving data message such as network gateway, sub-network
mask and DNS server IP address. PC can obtain the information by BOOTP. BOOTP
(Bootstrap Protocol) is a remote boot protocol appearing earlier and it communicates
with remote server to obtain necessary information of communication. BOOTP is
mainly used for Client without disk to obtain its IP address, IP address of server, boot
mapping file name and network gateway IP address from the Server.
BOOTP design is used in relatively static environment. Each host has a permanent
network connection. Administrator creates a BOOTP configuration file and this file
defines a group of BOOTP parameters for each host. Because the configuration
usually remains unchanged, this file will not change usually. The configuration usually
remains unchanged for weeks typically.
With the unceasing expansion of network scale and the increasing complexity of
network, the case that the computer number is more than the number of available IP
address usually appears. At the same time, with the wide use of portable computer
and wireless network, the location of computer usually changes and the
corresponding IP address should be usually updated. This make the network
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3.1 Summary
3-1
3.2 DHCP
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