Version 6.2 273 February 2011
SIP User's Manual 3. Web-Based Management
Note: By default, the device’s DHCP server is enabled. Therefore, when connecting
the device to your enterprise’s LAN, the device responds to DHCP requests
and consequently distributes IP addresses (instead of your Enterprise’s
DHCP server, if exists).
Your device's DHCP server:
Displays a list of all DHCP host devices connected to the device
Defines the range of IP addresses that can be allocated in the LAN
Defines the length of time for which dynamic IP addresses are allocated
Provides the above configurations for each LAN device and can be configured and
enabled/disabled separately for each LAN device
Can assign a static lease to a LAN PC so that it receives the same IP address each
time it connects to the network, even if this IP address is within the range of addresses
that the DHCP server may assign to other computers
Provides the DNS server with the host name and IP address of each PC that is
connected to the LAN
The device can also act as a DHCP relay, escalating DHCP responsibilities to a WAN
DHCP server. In this case, the device acts merely as a router, while its LAN hosts receive
their IP addresses from a DHCP server on the WAN. With the device's optional Zero
Configuration Technology feature, the IP Auto Detection method detects statically-defined
IP addresses in addition to the device's DHCP clients. It learns all the IP addresses on the
LAN, and integrates the collected information with the database of the DHCP server. This
allows the DHCP server to issue valid leases, thus avoiding conflicting IP addresses used
by other computers in the network.
¾ To configure DHCP:
1. Click the DHCP Server item (Configuration tab > Data menu > Data Services
submenu > DHCP Server); the following page appears:
Figure 3-187: Configuring DHCP Server
The page displays a summary of the services currently being provided by the DHCP
server.
Note: If a device is listed as "Disabled" in the 'Service' column, then DHCP services
are not being provided to hosts connected to the network through that device.
This means that the device does not assign IP addresses to these computers,
which is useful if you wish to work with static IP addresses only.
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