Mac Information Configuration; Overview; Introduction To Mac Information; How Mac Information Works - HP 3600 v2 series Configuration Manual

MAC Information configuration

Overview

Introduction to MAC Information

To monitor a network, you must monitor users who are joining and leaving the network. Because a MAC
address uniquely identifies a network user, you can monitor users who are joining and leaving a network
by monitoring their MAC addresses.
With the MAC Information function, Layer 2 Ethernet ports send Syslog or trap messages to the monitor
end in the network when they obtain or delete MAC addresses. By analyzing these messages, the
monitor end can monitor users who are accessing the network.

How MAC Information works

When a new MAC address is obtained or an existing MAC address is deleted on a device, the device
writes related information about the MAC address to the buffer area used to store user information.
When the timer set for sending MAC address monitoring Syslog or trap messages expires, or when the
buffer reaches capacity, the device sends the Syslog or trap messages to the monitor end.
The device writes information and sends messages only for the following MAC addresses: automatically
learned source MAC addresses, MAC addresses that pass or fail MAC authentication, MAC addresses
that pass 802.1X authentication, MAC addresses matching OUI addresses in the voice VLAN feature,
and secure MAC addresses. The device does not write information or send messages for blackhole MAC
address, static MAC addresses, dynamic MAC addresses that are manually configured, multicast MAC
addresses, and local MAC addresses.
For more information about MAC authentication, 802.1X, and secure MAC addresses in port security,
see Security Configuration Guide. For more information about voice VLAN and OUI addresses, see the
chapter "Voice VLAN configuration."

Configuring MAC Information

Enabling MAC Information globally

Follow these steps to enable MAC Information globally:
To do...
Enter system view
Enable MAC Information globally

Enabling MAC Information on an interface

Follow these steps to enable MAC Information on an interface:
Use the command...
system-view
mac-address information enable
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Remarks
—
Required
Disabled by default.