Configuration | System | IP Routing | DHCP
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VPN 3000 Concentrator Series User Guide
Lease Timeout
Enter the timeout in minutes for addresses that are obtained from a DHCP server. Minimum is 5, default
is 120, maximum is 500000 minutes. DHCP servers “lease” IP addresses for this period of time. Before
the lease expires, the VPN Concentrator asks to renew it on behalf of the client. If for some reason the
lease is not renewed, the connection terminates when the lease expires. The DHCP server’s lease period
takes precedence over this setting.
Listen Port
Enter the UDP port number on which DHCP server response messages are accepted. The default is 67,
which is the well-known port. To ensure proper communication with DHCP servers, we strongly
recommend that you not change this default.
Time out P erio d
Enter the initial time in seconds to wait for a response to a DHCP request before sending the request to
the next configured DHCP server. Minimum is 1, default is 2, maximum is 10 seconds. This time
doubles with each cycle through the list of configured DHCP servers.
Apply / Cancel
To apply the settings for DHCP parameters, and to include your settings in the active configuration, click
Apply. The Manager returns to the Configuration | System | IP Routing screen.
Reminder: To save the active configuration and make it the boot configuration, click the Save Needed icon at the
top of the Manager window.
To discard your entries, click Cancel. The Manager returns to the Configuration | System | IP Routing screen.