ELSA Cable manual Priority for the Dhcp server Request assignment

44Operating modes and functions

For each request, a host can ask for a specific period of validity. However, a DHCP server can also assign the host a period of validity that differs from what it requested. The DHCP module provides two settings for influencing the period of validity:

KMaximum lease time in minutes

Here you can enter the maximum period of validity that the DHCP server assigns a host.

If a host requests a validity in excess of 6000 minutes, this will nevertheless be the maximum available validity!

The default setting is 6000 minutes (approx. 4 days).

KDefault lease time in minutes

Here you can enter the period of validity that is assigned if the host makes no request. The default setting is 500 minutes (approx. 8 hours).

Priority for the DHCP server – Request assignment

In the default configuration, almost all the settings in the Windows network environment are selected in such a way that the necessary parameters are requested via DHCP. Check the settings by clicking Start E Settings E Control Panel E Network. Select the 'TCP/IP' entry for your network adapter and open Properties.

Check the various tabs for special entries, such as for the IP address or the standard gateway. If you would like all of the values to be assigned by the DHCP server, simply delete the corresponding entries.

Priority for a workstation—overwriting an assignment

If a computer uses parameters other than those assigned to it (e.g. a different default gateway), these parameters must be set directly on the workstation computer. The computer then ignores the corresponding parameters assigned to it by the DHCP server.

Under Windows, this can, for example, be performed via the properties of the network environment.

Click Start E Settings E Control Panel E Network. Select the 'TCP/IP' entry for your network adapter and open Properties.

You can now enter the desired values by selecting the various tabs.

The assignment of IP addresses to the various computers can be checked using the 'Setup/DHCP/Table-DHCP' item in the router's DHCP module. This table contains the assigned IP address, the MAC address, the validity, the name of the computer (if available) and the type of address assignment.

The 'Type' field specifies how the address was assigned. This field can assume the following values:

Knew

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