Chapter 5: Ethernet Interface Commands

Efficient Networks® Router family

 

Command Line Interface Guide

 

 

eth ip directbcast

Enables or disables the forwarding of broadcast packets directed to a specific network prefix. When forwarding is disabled, the router silently discards all packets broadcast to a subnet. The default is off; thus, by default, all network prefix-directed broadcast packets are discarded. This applies to all broadcast interfaces, including all Ethernet interfaces.

A network prefix-directed broadcast address is the broadcast address to a particular network. For example, if a network’s IP address is 192.168.254.254 and its mask is 255.255.255.0, its network prefix-directed broadcast addresses are 192.168.254.0 and 192.168.254.255.

This feature is independent of the IP firewall and IP filtering features. However, it does require that IP routing be enabled (see eth ip enable). To see the current settings for IP routing and directed broadcasts, use the eth list command.

Mgmt Class

Network (R/W)

Input Format

eth ip directedbcast on off

Parameters

on

Enables the forwarding of packets broadcast to a subnet.

off

Disables the forwarding of packets broadcast to a subnet.

Response

Command prompt.

eth ip disable

Disables IP routing across the Ethernet LAN. This commands acts as a master switch allowing you to disable all IP routing for testing or control purposes.

NOTE:

This command requires a save and reboot before it takes effect.

Mgmt Class

Network (R/W)

Page 5-18

Efficient Networks®

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Efficient Networks 107-0001-000 manual Eth ip directbcast, Eth ip disable, Eth ip directedbcast on off