Technical Documentation

Configuring MAC Move Parameters

When a MAC address appears on a different physical interface or within a different unit of the same physical interface and this behavior occurs frequently, it is considered a MAC move. You can configure the router to report a MAC address move based on the following parameters: the number of times a MAC address move occurs, a specified period of time over which the MAC address move occurs, and specified number of times a MAC address move occurs in one second. You can only configure the global-mac-move statement at the global hierarchy level.

To configure MAC address move reporting if the MAC address moves at least a specified number of times in one second, include the threshold-time statement at the [edit l2-learning global-mac-move] hierarchy level. The default threshold time is 1 second.

To configure reporting of a MAC address move if the MAC address moves for a specified period of time, include the notification-time statement at the [edit l2-learning global-mac-move] hierarchy level. The default notification timer is 1 second.

To configure reporting of a MAC address move if the MAC address moves a specified number of times, include the threshold-count statement at the [edit l2-learning global-mac-move] hierarchy level. The default threshold count is 50 moves.

Use the show l2-learning mac-move-buffer command to view detailed information about MAC address moves.

The following example sets the notification time for MAC moves to 1 second, the threshold time to 1 second, and the threshold count to 50 moves.

[edit protocols l2-learning]global-mac-move {notification-time 1;threshold-count 50;threshold-time 1;}

Published: 2010-05-11