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Operating modes and functions
55
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ELSA LANCOM Wireless L-II
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EN
give its own IP address to the stations in the WLAN as that of the DNS or
NBNS server, in which case the relevant queries cannot be answered.
Default gateway assignment
The device always assigns the requesting computer its own IP address as a
gateway address. However, because a
ELSA AirLancer
does not have the
functions of a gateway, this task must be done by another gateway.
If a gateway in a wired LAN must also be available in the wireless network,
enter the IP address of the gateway in the DHCP module as the 'Gateway
Address'. Otherwise, the access point will give its own IP address to the
stations in the WLAN as that of the gateway, in which case the relevant
queries cannot be answered.
If necessary, this assignment can be overwritten with the settings on the
workstation computer.
Period of validity for an assignment
The addresses assigned to the computer are valid only for a limited period of
time. Once this period of validity has expired, the computer can no longer use
these addresses. In order for the computer to keep from constantly losing its
addresses (above all its IP address), it applies for an extension ahead of time
that it is generally sure to be granted. The computer loses its address only if
it is switched off when the period of validity expires.
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:
Maximum 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 that exceeds the maximum length, this will
nevertheless be the maximum available validity!
The default setting is 6000 minutes (approx. 4 days).
Default 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).
100235 Wireless L-11.book Seite 55 Montag, 30. Oktober 2000 5:43 17
