V7122 Gateway User Guide 425Setting the PreferencesThe Preferences window is used to configure the BootP Tool parameters.Figure 125 Preferences ScreenBootP PreferencesARP is a common acronym for Address Resolution Protocol, and is the method used by allInternet devices to determine the link layer address, such as the Ethernet MAC address, inorder to route Datagrams to devices that are on the same subnet.When ARP Manipulation is enabled on this screen, the BootP Tool creates an ARP cacheentry on your computer when it receives a BootP BootRequest from the VoIP gateway. Yourcomputer uses this information to send messages to the VoIP gateway without using ARPagain. This is particularly useful when the gateway does not yet have an IP address and,therefore, cannot respond to an ARP.Because this feature creates an entry in the computer ARP cache, Administrator Privilegesare required. If the computer is not set to allow administrator privileges, ARP Manipulationcannot be enabled. ARP Manipulation Enabled: Enable ARP Manipulation to remotely reset a gateway thatdoes not yet have a valid IP address.
