Enterasys Networks 9034313-07 manual Configuring Broadcast Suppression, Show port broadcast

Configuring Broadcast Suppression

Configuring Broadcast Suppression

Purpose

To review and set the broadcast suppression threshold for one or more ports. This feature limits the number of received broadcast frames the switch will accept per port. Broadcast suppression thresholds apply only to broadcast traffic—multicast traffic is not affected. By default, a broadcast suppression threshold of 14881 packets per second (pps) will be used, regardless of actual port speed. Broadcast suppression protects against broadcast storms and ARP sweeps.

Note: Class of Service functionality can also be used to control broadcast, unknown unicast, and/or multicast flooding. This feature prevents configured ports from being disrupted by a traffic storm by rate-limiting specific types of packets through those ports. Refer to “About CoS-Based Flood Control” on page 10-20for more information.

Commands

For information about...	Refer to page...
show port broadcast	7-33
set port broadcast	7-34
clear port broadcast	7-34

show port broadcast

Use this command to display port broadcast suppression thresholds.

Syntax

show port broadcast [port-string]

Parameters

port‐string	(Optional) Select the ports for which to show broadcast suppression
	thresholds. For a detailed description of possible port‐string values, refer
	to “Port String Syntax Used in the CLI” on page 7‐1.

Defaults

If port‐string is not specified, broadcast status of all ports will be displayed.

Mode

Switch command, read‐only.

Example

This example shows how to display the broadcast suppression thresholds for ports 1 through 4:

C3(su)->show port broadcast ge.1.1-4

Port	Total BC	Threshold
	Packets	(pkts/s)

----------------------------------------

ge.1.1 0 50

SecureStack C3 Configuration Guide 7-33