Hi, feixue!
The possible causes are as follows:
l
The
network between the BMU and AD server is unreachable.
l
The
service port of the AD server is incorrect.
l
The
password of the AD server is incorrect.
To rectify the fault, perform the following steps:
1. Confirm with the AD administrator whether the
password is correct.
a) If the password is incorrect, change it.
b) If the password is correct, go to the next step.
2. Log in to the BMU server.
3. Run the ping AD server IP address
command to check the network connectivity between the BMU and AD server.
a) If the network is unreachable, check and modify the AD
server status, network adapter status, network cable connection status and
network configuration to ensure that the network is reachable.
b) If the network is reachable, go to the next step.
4. Run the telnet AD server IP address
AD service port number command to check whether the AD service port can be
connected.
If the connection
fails, the service port number has been changed or is mapped to another port
through NAT. Contact the AD
administrator to obtain the related information.
I hope I can help you!