Routing ProtocolDescriptionUsing the ospf network-type command, you can configure the OSPF network type atthe interface. Using the undo ospf network-type command, you can restore thedefault network type.When the user has set a new network type at the interface, the original network typeat the interface will be canceled automatically.For related commands, see ospf peer.Example# Set the interface Serial 0 to be NBMA.[3Com-Serial0] ospf network-type nbma3.1.29 ospf peerSyntaxospf peer ip-address [ eligible ]undo ospf peer ip-addressViewInterface viewParameterip-address: IP address for neighboring router at NBMA, point-to-point andpoint-to-multipoint interfaces, in the dotted decimal format.eligible: indicates the peer process the priority to select DR.DescriptionUsing the ospf peer command, you can configure the IP address of the neighboringrouter. Using the undo ospf peer command is to cancel the IP address setting for theneighboring router.By default, no IP address is set for any opposite router.For the NBMA network, such the X.25 or FR network that do not support broadcast,some special configurations are required. As the interface cannot discover theneighboring router through broadcasting the Hello packets, we have to specify the IPaddress of the neighboring router and whether the router is eligible for election for it59