Configuring Mac Address Move Notifications And Suppression; Configuring Mac Address Move Notifications; Configuring Mac Address Move Suppression - H3C S7500E-X Configuration Manual

Configuring MAC address move notifications and
suppression
The outgoing interface for a MAC address entry learned on interface A is changed to interface B
when the following conditions exist:
•
Interface B receives a packet with the MAC address as the source MAC address.
•
Interface B belongs to the same VLAN as interface A.
In this case, the MAC address is moved from interface A to interface B, and a MAC address move
occurs.
If a MAC address is continuously moved between the two interfaces, Layer 2 loops might occur. To
detect and locate loops, you can configure MAC address move notifications and MAC address move
suppression.

Configuring MAC address move notifications

This feature enables the device to output MAC address move logs when MAC address moves are
detected.
To display the MAC address move records after the device is started, use the display mac-address
mac-move command.
To configure MAC address move notifications:
Step
Enter system view.
1.
Enable MAC address
2.
move notifications, and
optionally specify a
MAC move detection
interval.

Configuring MAC address move suppression

When the system detects that a MAC address frequently moves to or from an interface, you can
configure MAC address move suppression on the interface to shut it down. The interface
automatically comes up after waiting for a suppression interval. Also, you can use the shutdown
command and then the undo shutdown command to bring up the interface.
To configure MAC address move suppression:
Step
Enter system view.
1.
Command
system-view
mac-address notification mac-move
[ interval interval-value ]
Command
system-view
11
Remarks
N/A
By default, MAC address move
notifications are disabled.
If you do not specify a MAC
move detection interval, the
default setting of 1 minute is
used.
To enable the system to display
MAC address move logs, you
must execute the snmp-agent
trap enable mac-address
command after executing the
mac-address notification
mac-move command.
Remarks
N/A