User`s guide

VoiceFinder AP1100 VoIP Gateway User’s Guide Version 1.1
AddPac Technology Co., Ltd. -
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4.8. DHCP(Dynamic Host Configuration Protocol)
Configuration
Dynamic Host Configuration Protocol (DHCP) automatically allocates IP
addresses to DHCP clients.
The DHCP function of the VoiceFinder AP1100 Gateway uses the address pool
that has been set in the Gateway to allocate IP addresses to DHCP clients and
manage IP addresses.
If software of the VoiceFinder AP1100 Gateway does not respond to the
request of DHCP through the database that is set in the Gateway, the
Gateway will send the request to another DHCP server that the network
manager has set.
The following figure shows the basic procedure that the DHCP client requests
an IP address to the DHCP server.
VoiceFinder
AP1100 Router
AddPac
DHCP Server
Host A
DHCPACK (unicast)
DHCPREQUEST (broadcast)
DHCPOFFER (unicast)
DHCPDISCOVER (broadcast)
IBM RS/6000
Router
Host A (a client) sends a broadcast message “DHCPDISCOVER” to the DHCP
server of the Gateway. Then, the DHCP server sends the DHSCPOFFER Unicast
message that contains configuration information – IP address to be allocated,
Information