BMS installed to the customer PE. PE route BMS to BRAS.
MA5600A and MA5600B in the topology take turns switch to the grey color and green color. In the grey color time, the device can't be configure.
log the MA5600 then configure:
MA5600(diagnose)%%display sysman mac-address
Current MAC address of active mainboard: XX-XX-XX
Default MAC address of active mainboard: XX-XX-XX
MA5600(diagnose)%%sysman mac-address current XX-XX-XX // restore the mac-address to default.
Modifying current MAC address may cause the conflict of MAC address, are you
Command is being executed, please wait...
The configuration takes effect after system is restarted
After this process, the link become stable
MAC address from the MA5600A and MA5600B same.