Chapter 12 Avaya P330 Layer 3 Features

NetBIOS Re-broadcast Configuration

NetBIOS Overview

Short for Network Basic Input Output System, an application programming interface (API) that augments the DOS BIOS by adding special functions for local- area networks (LANs). Almost all LANs for PCs are based on the NetBIOS. Some LAN manufacturers have even extended it, adding additional network capabilities.

The Avaya P330 can be configured to relay netbios UDP broadcast packets. This feature is used for applications such as WINS that use broadcast but may need to communicate with stations on other subnets or VLANs.

Configuration is performed on a per-interface basis. When a netbios broadcast packet arrives from an interface on which netbios rebroadcast is enabled, the packet is distributed to all other interfaces configured to rebroadcast netbios.

If the netbios packet is a net-directed broadcast (e.g., 149.49.255.255), the packet is relayed to all other interfaces on the list, and the IP destination of the packet is replaced by the appropriate interface broadcast address.

If the netbios broadcast packet is a limited broadcast (e.g., 255.255.255.255), it is relayed to all VLANs on which there are netbios-enabled interfaces. In that case, the destination IP address remains the limited broadcast address.

NetBIOS Re-broadcast Configuration CLI Commands

In order to...

Use the following command...

 

 

 

 

Set NetBIOS rebroadcasts mode on

ip netbios-rebroadcast

an interface

 

 

 

Disable NetBIOS rebroadcasts

no ip netbios-rebroadcast

mode on an interface

 

 

 

Avaya P334T-ML User’s Guide

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Avaya P334T-ML manual NetBIOS Overview, NetBIOS Re-broadcast Configuration CLI Commands