EBW-E100
Functions
73
12.5.3
Setting up the DHCP Server
On request, the DHCP server of the EBW-E100 can automatically allocate other
devices in the LAN an address. This automatically allocated, dynamic IP addresses
are only valid for a certain time. The validity of the IP addresses allocated by the
DHCP server are controlled via the "Lease time". If there is already a DHCP server
in the network, in which the EBW-E100 is used, this function must absolutely be
disabled in the device. Otherwise, clients would let their IP address be assigned by
a wrong DHCP server.
IP addresses, which are in the IP pool and for which a connection to a MAC
address exists, are exclusively reserved for this DHCP client. The IP address is thus
not in the IP pool anymore. No IP addresses should be selected from the IP pool for
this MAC IP address connections. The pool should only be available for the DHCP
clients, for which no MAC address is known or is to be considered.
Configuration via web interface (menu "Server services", page "DHCP")
In order to setup the DHCP server, check the checkbox "Activate DHCP
server".
Enter into the entry fields "First and last IP address" the first IP address
and the last IP address of the address range, from which the DHCP
server of the device allocates addresses in the LAN. The IP address range
of the DHCP server must be located in the same network as the IP
address of the EBW-E100.
Enter into the entry field "Lease Time" a validity period in seconds enter a
Validity period for the IP addresses to be allocated by the DHCP server.
The default value is 3.600 seconds.
In order to inform the DHCP clients about a special DNS server, enter its
IP address into the entry field "Alternative DNS server address". If the
field is empty, the local IP address of the router and the IP addresses of
the fixed configured DNS servers are communicated to the clients.
In order to specify an alternative gateway, enter its IP address into the
"Alternative default gateway address" field. If the field is empty, the IP
address of the router will be proposed to the clients as gateway.
Save your settings by clicking "OK".
In order to view the IP addresses allocated by the DHCP server and their
"Lease Time" (validity period), use the link "Display DHCP lease times".
You can define fix allocations in the section "Add new allocation of MAC
address and IP address" in order to allocate always the same IP address
to DHCP clients. For this, enter the MAC address of the respective DHCP
client into the entry field "MAC address" and the IP address, to which the
DHCP client is to be connected, into the field "IP address". The MAC
address can be entered with or without colons; other formats are not
supported. Save the allocation by clicking "OK".
