INSYS MoRoS GPRS 2.1 PRO, Руководство пользователя

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Functions MoRoS GPRS 2.1 PRO
12.12.3 Setting up the DHCP Server
On request, the DHCP server of the MoRoS GPRS 2.1 PRO can automatically allo-
cate 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 MoRoS GPRS 2.1 PRO is used, this function
must absolutely be disabled in the MoRoS GPRS 2.1 PRO. 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 the web interface
In order to setup the DHCP server, check in the menu "Server services" on
the page "DHCP" 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 MoRoS GPRS 2.1 PRO allocates addresses in the LAN. The IP ad-
dress range of the DHCP server must be located in the same network as
the IP address of the MoRoS GPRS 2.1 PRO.
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
firmly configured DNS servers are communicated to the clients.
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 cli-
ent into the entry field "MAC address" and the IP address, to which the
DHCP client is to be connected, into the field "IP address". Save the allo-
cation by clicking "OK".
In order to delete one or more allocations, check in the section "Fixed al-
location of IP addresses to MAC addresses“ the checkbox in the column
"delete" and click then "OK" to accept the setting.
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