
Configuring NetBIOS over IP
8-3
This chapter describes IP support for the NetBIOS name service, the NetBIOS
session service, and the NetBIOS datagram service.
Configuring NetBIOS on an IP Interface
NetBIOS software on the router communicates with NetBIOS clients and servers
through IP interfaces that have been configured with NetBIOS.
Forwarding Name Query Packets over an Unnumbered IP Interface
NetBIOS cannot be configured directly on an unnumbered interface. Because of
this restriction, Name Query Requests cannot be broadcast over an unnumbered
interface.
To forward Name Query Requests over unnumbered interfaces, the network
administrator configures a static NetBIOS name entry to the proper NetBIOS
name server (see “Configuring a Static NetBIOS Name” on page 8-5). In this way,
Name Query Requests will traverse the unnumbered interfaces as unicast IP
packets.
Customizing IP Support for NetBIOS
The NetBIOS name service and datagram service rely on the capability of the
underlying network to broadcast Name Query Requests to all NetBIOS
applications. In a NetBIOS over IP environment, it is the responsibility of the IP
router to ensure that the broadcast queries reach all appropriate network segments.
To do this, the router
1. Analyzes each NetBIOS packet received on any NetBIOS interface to
determine whether the packet is a broadcast packet
2. Rebroadcasts each broadcast packet out all appropriate interfaces except the
one on which it was received (readdressing the packet if required)
For instructions on using Site Manager to configure the router for NetBIOS over IP, see
“Configuring NetBIOS on the Router” on page 8-9.
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