XX branch when RH2285 has been online and found BMC's web interface can log in, but the remote control cannot be open.
Between the client and the server through a firewall.
When login to the RH2285, Remote control cannot be open, overtime appears.
Firewall maintenance staff open the related server KVM (BMC) Interface port (port 2198), then the problem is resolved.
Situation like this is more likely to be a firewall blocking port 2198 BMC caused.
Huawei server port list as below:
IPMI Over Lan master port
IPMI Over Lan auxiliary port
http protocol port
telnet service port
ftp service port
ssh service port
Server port number list for RH1285/2285, E6000, X6000, T6000 series server are the same.