H3C S6850 Series, Configuration Manual

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16
Configuring MAC Information
About 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 user's 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. The device overwrites the oldest MAC address change written into the queue with the most
recent MAC address change when the following conditions exist:
•
The MAC change notification interval does not expire.
•
The queue has been exhausted.
To send a syslog message or SNMP notification immediately after it is created, set the queue length
to zero.
Enabling MAC Information
Restrictions and guidelines
For MAC Information to take effect, you must enable MAC Information both globally and on
interfaces.
Procedure
1. Enter system view.
system-view
2. Enable MAC Information globally.
mac-address information enable
By default, MAC Information is globally disabled.
3. Enter Layer 2 Ethernet interface view.
interface interface-type interface-number
4. Enable MAC Information on the interface.
mac-address information enable { added | deleted }
By default, MAC Information is disabled on an interface.
Configuring the MAC Information mode
About MAC Information modes
The following MAC Information modes are available for sending MAC address changes:
•
Syslog —The device sends syslog messages to notify MAC address changes. The device
sends syslog messages to the information center, which then outputs them to the monitoring
terminal. For more information about information center, see
Network Management and
Monitoring Configuration Guide .
•
Trap —The device sends SNMP notifications to notify MAC address changes. The device sends
SNMP notifications to the NMS. For more information about SNMP, see Network Management
and Monitoring Configuration Guide .