Routing and WAN connections
BAT54-Rail/F..
Release
7.54
06/08
11.7
Changes in other services
395
U Addresses for DHCP clients
The start and end addresses define the address pool which is available to the
clients.
When a client is activated in the network and requests an IP address by DH-
CP, the device with an activated DHCP server will offer to issue an address.
This address is selected from the pool of valid IP addresses. A computer
which received an IP address in the past requests this address again and,
assuming the DHCP server has not assigned this number to another comput-
er in the meantime, it will attempt to issue this address again.
The DHCP server also checks the LAN to confirm that the selected address
is free. Once the address is confirmed as unique, then it is assigned to the
requesting computer.
Note: The factory settings include the IP networks 'Intranet' and 'DMZ', al-
though there are no settings for IP addresses and netmasks. The device
is in a special operating mode. It then uses the IP address '172.23.56.254'
and the address pool '172.23.56.253' for assigning IP addresses to the
network.
D Start address
The first IP address in the pool available to the clients. If no address is
entered here the DHCP takes the first available IP address from the net-
work (as determined by network address and netmask).
D Default: 0.0.0.0
D End address
The last IP address in the pool available to the clients. If no address is
entered here the DHCP takes the last available IP address from the net-
work (as determined by network address and netmask).
D Default: 0.0.0.0
D Netmask
Corresponding netmask for the address pool available to the clients. If no
address is entered here the DHCP server uses the netmask from the cor-
responding network.
D Default: 0.0.0.0
D Broadcast
As a rule broadcast packets in a local network have an address which
results from the valid IP addresses and the netmask. In special cases
(e.g. when using subnets for a selection of workstations) it may be neces-
sary to use a different broadcast address. In this case the broadcast
address is entered into the DHCP module.
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