UTStarcom WA3001, User Manual

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90 Chapter 7 Performance Statistics
Fields Description
Clean Click this button to clean the statistics of the
system.
Theory:
DHCP service operation theory:
The communication method between the DHCP workstation
and server is depending upon whether it is the first time that the
DHCP workstation logs into the network. Consider the following
situation as an example when the DHCP workstation logs into
the network for the first time:
The first period is a discovery period when the DHCP
workstation discovers DHCP servers. The DHCP workstation
broadcasts the “dhcp discover” messages to search DHCP
servers (DHCP server IP address is not known), i.e., the DHCP
workstation sends specific broadcast information to
255.255.255.255. Every host installed with TCP/IP protocol on
the network will receive such broadcast information. Only DHCP
servers will respond to this broadcast information.
The second period is an offer period when DHCP servers offer
the IP address. DHCP servers will respond when they receive
the “dhcp discover” message and assign an unleased IP
address to the DHCP workstation. Then send the DHCP
workstation the “dhcp offer” message, which includes the IP
address to be leased and other configuration.