A CCESS G ATEWAY68 Installing the Access Gateway Setting the DHCP Options – DHCP (Dynamic Host Configuration Protocol) allowsyou to assign IP addresses automatically (to subscribers who are DHCP enabled). TheAccess Gateway can “relay” the service through an external DHCP server or it can beconfigured to act as its own DHCP server. Setting the DNS Options – DNS (Domain Name System) allows subscribers to entermeaningful URLs into their browsers (instead of complicated numeric IP addresses).DNS converts the URLs into the correct IP addresses automatically.Setting the DHCP OptionsWhen a device connects to the network, the DHCP server assigns it a “dynamic” IP address forthe duration of the session. Most users have DHCP capability on their computer. To enable thisservice on the Access Gateway, you can either enable the DHCP relay (routed to an externalDHCP server IP address), or you can enable the Access Gateway to act as its own DHCPserver. In both cases, DHCP functionality is necessary if you want to automatically assign IPaddresses to subscribers.1. Enter c (configuration) at the Access Gateway Menu. The Configuration menu appears.2. Enter dh (dhcp).3. Follow the on-screen instructions to set up your DHCP options. For example:The Access Gateway’s adaptive configuration technology provides DynamicAddress Translation (DAT) functionality. DAT is automatically configured tofacilitate “plug-and-play” access to subscribers who are misconfigured withstatic (permanent) IP addresses, or subscribers that do not have DHCP capabilityon their computers. DAT allows all users to obtain network access, regardless oftheir computer’s network settings.By default, the Access Gateway is configured to act as its own DHCP server andthe relay feature is “disabled.”. Please verify that your DHCP Server supportsDHCP packets before enabling the relay. Not all devices containing DHCPservers (for example, routers) support DHCP Relay functionality.When assigning a DHCP Relay Agent IP address for the DHCP Relay, ensurethat the IP address you use does not conflict with devices on the network side ofthe Access Gateway.Although you cannot enable the DHCP relay and the DHCP service at thesame time, it is possible to “disable” both functions from the Command LineInterface. In this case, a warning message informs you that no DHCP servicesare available to subscribers.
