Service manual

454
SEP 2006
Ver. 1.1
DP-8020E/8020P/8016P
Following figure shows the timeline diagram of messages exchanged between DHCP client and servers
when allocating a new network address.
Following figure shows the timeline diagram of messages exchanged between DHCP client and servers
when reusing a previously allocated network address.
DHCPOFFER
DHCPREQUEST DHCPREQUEST
DHCPRELEASE
DHCPACK
DHCPDISCOVERDHCPDISCOVER
DHCPOFFER
(not selected)
Server
(selected)
Client Server
Commits configuration
Discards lease
Determines
configuration
Collects replies
Selects configuration
Begins initialization
Initialization complete
Graceful shutdown
Determines
configuration
Timeline diagram of messages exchanged between DHCP client and servers
when allocating a new network address
DHCPACK
DHCPREQUESTDHCPREQUEST
DHCPACK
Server Client Server
Locates
configuration
Begins initialization
Locates
configuration
Timeline diagram of messages exchanged between DHCP client and servers when
reusing a previously allocated network address
Initialization complete
Subsequent
DHCPACKS ignored