R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Configuration Guide

Configuring MAC Information

The MAC Information feature can generate syslog messages or SNMP notifications when MAC address

entries are learned or deleted. You can use these messages to monitor users leaving or joining the

network and analyze network traffic.

The MAC Information feature buffers the MAC change syslog messages or SNMP notifications in a

queue. When the timer set for sending syslog messages or SNMP notifications does not expire, the

device overwrites the last piece of information written into the queue with the new MAC address change

if the queue has been exhausted. To send a syslog message or SNMP notification immediately after it is

created, set the queue length to zero.

Configuration guidelines

Enable MAC Information globally before you enable it on interfaces.

This feature is not applicable to EA and EB cards that are operating in MAC extension mode (bridging)

or mixed extension mode (mix-bridging-routing). For more information about the operating mode of

cards, see Fundamentals Configuration Guide.

Enabling MAC Information globally

Ste

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enable MAC Information

globally.

mac-address information enable

By default, MAC Information is

disabled globally.

Enabling MAC Information on an interface

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter interface view.

• Enter Layer 2 Ethernet interface

view:

interface interface-type

interface-number

• Enter S-channel interface view:

interface s-channel

interface-number.channel-id

N/A

3. Enable MAC Information on

the interface.

mac-address information enable

{ added | deleted }

By default, MAC Information is

disabled on an interface.