Enabling Mac Address Synchronization - H3C S6850 Series Configuration Manual

mac-address mac-learning priority { high | low }
By default, low MAC learning priority is used.

Enabling MAC address synchronization

About 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
•
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 2 MAC address tables of devices when Client A accesses AP C
MAC address
MAC A
Device A
Port A1
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 2:
Port
A1
IRF
Client A
MAC address Port
MAC A A1
Device B
Port B1
AP D
9
Figure 3.