Westell Inc. A9081XXYY-07 ユーザーズマニュアル
030-300479 Rev. A
Draft 1 – 10/17/05
030-300479 Rev. A
50
October 2005
User Guide
UltraLine IIB (Model A90-816030)
by the network and which portion is controlled by the host.
Address Range
DHCP Start Address
DHCP Start Address
Displays the first IP address that the Public LAN DHCP Server will provide.
The DHCP Start Address must be within the IP address and lower than the
DHCP End Address.
The DHCP Start Address must be within the IP address and lower than the
DHCP End Address.
DHCP End Address
Displays the last IP address that the Public LAN DHCP Server will provide.
The DHCP End Address must be within the IP address and higher than the
DHCP Start Address.
The DHCP End Address must be within the IP address and higher than the
DHCP Start Address.
DHCP Lease Time
Factory Default = 01:00:00:00
Displays the amount of time the provided addresses will be valid, after which
time the Public LAN DHCP client will usually re-submit a request.
Note: DHCP Lease Time is displayed in the format (day:hour:min:sec)*. This
value must be greater than 10 seconds. Seconds must be between 0 and 59,
minutes must be between 0 and 59, and hours must be between 0 and 23.
Displays the amount of time the provided addresses will be valid, after which
time the Public LAN DHCP client will usually re-submit a request.
Note: DHCP Lease Time is displayed in the format (day:hour:min:sec)*. This
value must be greater than 10 seconds. Seconds must be between 0 and 59,
minutes must be between 0 and 59, and hours must be between 0 and 23.
If the settings you have entered in the Public LAN Settings fields are incorrect, the following warnings messages
may be displayed via pop-up screens. If this occurs, check the Public LAN settings.
Warning Message
Check Public LAN DHCP Settings
Start Address is not part of the Subnet
Check the value in the DHCP Start Address field
End Address is not part of the Subnet
Check the value in the DHCP End Address field
End Address is below the Start Address
Check the value in the DHCP End Address field
Lease time must be greater than 10 seconds
Check the values in the DHCP Lease Time fields
Seconds must be between 0 and 59
Check the Seconds field at DHCP Lease Time
Minutes must be between 0 and 59
Check the Minutes field at DHCP Lease Time
Hours must be between 0 and 23
Check the Hours field at DHCP Lease Time
15.5.4 IP Passthrough – Single IP Address Passthrough
The following screen will be displayed if you select LAN > IP Passthrough from the Configuration menu. IP
Passthrough enables you to select the device on your LAN that will share your Single Static IP address. Before you
begin this section, configure your PC settings to obtain an IP address from your Gateway automatically. (Refer to
your computer’s Windows® Help screen for instructions.)
NOTE: IP Passthrough enables you to share the WAN-assigned IP address with one device on your LAN. Network
Address Translation (NAT) and Firewall rules do not apply to the device configured for IP Passthrough. Thus, the
device with the single static IP address becomes visible on the Internet. If you are using Routed IP protocol, IP
Passthrough configuration will not be available.