Nokia Network Voyager for IPSO 4.0 Reference Guide 471To disable BOOTP relay on an interface1. Click BOOTP Relay under Configuration > Router Services in the tree view.2. Select Off for the interface on which you want to disable BOOTP.3. Click Apply to disable the interface.When you click off, then apply, the BOOTP relay parameters (primary IP, wait time, andnew server) disappear, however the parameters are still stored in the system. If you selectOn, then Apply, these parameters reappear.4. Click Save to make your changes permanent.IP Broadcast HelperIP Broadcast Helper is a form of static addressing that uses directed broadcasts to forward localand all-nets broadcasts to desired destinations within the internetwork. IP Broadcast Helperallows the relaying of broadcast UDP packets on a LAN as unicasts to one or moreremote servers. This is useful when you relocate servers or hosts from their originalcommon segment and still want the service to be available.NoteFor further information, see RFC1542 section 4.You cannot pass BOOTP UDP packets by using the IP Broadcast helper (UDP port 67). TheBOOTP functionality on a router is different from generic UDP packet forwarding to a specifiedIP address. While the IP Broadcast Helper forwards the UDP packet to the IP address withoutmodification, the BOOTP implementation is more complex—the client sends a broadcastBOOTP packet to the router, which sends a modified packet to the server. The router modifiesthe packet by inserting its IP address in the giaddr field of the BOOTP packet (this field is usedby the server to identify the network where the packet originated).Table 29 describes the parameters that you can configure for IP broadcast helper.Table 29 IP Broadcast helper configuration parametersParameter DescriptionForward Nonlocal Allows you to forward packets that are not originated by a source that is directly onthe receiving interface. When you enable Forward Nonlocal, it applies to allinterfaces that are running the IP Helper service.Selecting Disabled requires that packets be generated by a source directly on thereceiving interface to be eligible for relay. Enabled allows forwarding of packetseven if the source is not directly on the receiving interface. The default is Disabled,which requires that packets be generated by a source directly on the receivinginterface to be eligible for relay.IP Helper InterfaceOn/OffSpecifies whether IP helper service is running on the interface. After you select Onand click the Apply button, configuration options for IP broadcast helper for theinterface appear.
