Enabling MAC address synchronization
To avoid unnecessary floods and improve forwarding speed, make sure all member devices have the same MAC address table. After you enable MAC address synchronization, each member device advertises learned MAC address entries to other member devices.
As shown in Figure 3,
Device A and Device B form an IRF fabric enabled with MAC address synchronization.
Device A and Device B connect to AP C and AP D, respectively.
When Client A associates with AP C, Device A learns a MAC address entry for Client A and advertises it to Device B.
Figure 3: MAC address tables of devices when Client A accesses AP C
When Client A roams to AP D, Device B learns a MAC address entry for Client A. Device B advertises it to Device A to ensure service continuity for Client A, as shown in Figure 4.
Figure 4: MAC address tables of devices when Client A roams to AP D
To enable MAC address synchronization:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enable MAC address synchronization. | mac-address mac-roaming enable | By default, MAC address synchronization is disabled. |