Siemens SE551 S30853-H1029-R701 User Manual

Gigaset SE551 WLAN dsl/cable / ENG / A31008-M1029-B101-2x-7619 / configure_router.fm / 03.11.2008

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Configuring the DHCP server
The Gigaset SE551 WLAN dsl/cable has a 

 for which the factory setting is 

active. As a result, the IP addresses of the PCs are automatically assigned by the 
Gigaset SE551 WLAN dsl/cable. 

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To activate the DHCP server, select On.

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If the DHCP server is active, you can define a Lease time. The 

 determines 

the period for which the PCs keep the IP address assigned to them without changing 
them.

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Define the range of IP addresses which the Gigaset SE551 WLAN dsl/cable should 
use to automatically assign IP addresses to PCs. Define the First issued IP address 
and the Last issued IP address. 

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You can define the name of a domain (Windows workgroup) in the Domain name 
field.

Even if you have activated the DHCP server you can still assign individual PCs a static 
IP address (e.g. if you are setting up these PCs for NAT functions).

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Enter the MAC address and the name of the PC in the Device name field.

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Enter the IP address you wish to assign to the PC in the field below.

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Click on the Add button to add the entry to the list.

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Click on the Delete button to delete the entry from the list.

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Apply the settings by clicking OK.

Please remember:
New settings can only be made after rebooting the Gigaset SE551 WLAN dsl/cable. 
If necessary, reconfigure the IP address on your PC (including one that is statically 
assigned) so that it matches the new configuration. 

Please remember:
u If the DHCP server for the Gigaset SE551 WLAN dsl/cable is activated, you can con-

figure the network setting on the PC so that the option Obtain an IP address 
automatically is set. To find out how to do this, please read the document enti-
tled “Network configuration” on the CD.

u If you deactivate the DHCP server, you will have to assign a static IP address for 

the PCs using the network settings.

Please remember:
If you select the Never expires option, the IP addresses are never changed. 
You must select this option if you want to make NAT or firewall settings using the 
IP addresses of the PCs, or else you must assign these PCs static IP addresses.