Mobile Broadband Modem MBM621 User Manual
The following table explains the settings on the LAN IP Setup screen.
Table 3-1. LAN IP Setup Screen Settings
Settings | Description |
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LAN TCP/IP Settings | The LAN IP address of the modem. |
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| • The LAN IP address of the modem. |
| • IP Subnet Mask. The LAN Subnet Mask of the modem. |
| Combined with the IP address, the IP Subnet Mask allows a |
| device to know which other addresses are local to it, and which |
| must be reached through a gateway or modem. |
|
|
Use Modem as DHCP Server | A Dynamic Host Configuration Protocol (DHCP) server assigns IP, |
| DNS server, and default gateway addresses to all computers |
| connected to the modem’s LAN. See the following section. |
Address Reservation | Specify a reserved IP address for a computer on the LAN, so that it |
| always receives the same IP address when it access the modem’s |
| DHCP server. See “Reserved IP Addresses”. |
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Setting up the Modem as a DHCP Server
A Dynamic Host Configuration Protocol (DHCP) server assigns IP, DNS server, and default gateway addresses to all computers connected to the modem’s LAN. IP addresses are assigned to the attached PCs from a range of addresses specified in this screen. Each address is tested before it is assigned to avoid duplicate addresses on the LAN.
For an explanation of DHCP and help with assigning IP addresses, see the link to the online document in “Internet Networking and TCP/IP Addressing” in Appendix B.
To set up the modem as a DCHP server:
1.On the LAN IP screen, select the Use router as DHCP server check box.
2.Specify the range of IP addresses to be assigned by filling in the Starting IP Address field and Ending IP Address field.
These addresses should be part of the same IP address subnet as the router’s LAN IP address. Using the default addressing scheme, you should define a range between 192.168.1.2 and 192.168.1.100, although you might want to save part of the range for devices with fixed addresses.
3.Click Apply to save your settings.
The modem delivers the following parameters to any LAN device that requests DHCP:
Advanced Settings |