Avaya Configuring IP Services Manual de usuario Pagina 204

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Configuring IP Services
8-2 114065 Rev. A
NetBIOS Concepts and Terminology
The Network Basic Input-Output System (NetBIOS) is a session layer
communications service used by client and server applications in IBM Token
Ring and PC LAN networks.
NetBIOS provides applications with a programming interface for sharing services
and information across a variety of lower-layer network protocols, including IP.
Figure 8-1 shows the position of NetBIOS and IP in a simple network
architecture.
Figure 8-1. NetBIOS over IP
There are three categories of NetBIOS services: the name service, the session
service, and the datagram service.
The NetBIOS name service allows an application to
Verify that its own NetBIOS name is unique. The application issues an Add
Name Query to NetBIOS. NetBIOS broadcasts the Add Name Query,
containing the name. NetBIOS applications that receive the query return an
Add Name Response or a Name in Conflict Response. If no response to the
query is received after (typically) six broadcasts, the name is considered to be
unique.
Delete a NetBIOS name that the application no longer requires.
Client
NetBIOS NetBIOS
Server
IP IP
Host A
Router
Host B
LAN/WAN
NetBIOS
IP
Application
Layer
Session
Layer
Network
Layer
IP0032A
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