UCS CIMC web cannot be opened

[NeoChen722593]

Hi All,

We have a Be6k M6 server can be pinged, but the CIMC web cannot be opened, it always loading the webpage. SSH login will get stuck after entering the account password, we also have another server with the same model and firmware that can open CIMC web, but no matter how we input the account/password, it will not login. Firmware version is 4.3(2.230270).

May I ask how to solve this?

[Steven Tardy]

Haven't seen this exact issue without there being an issue on the local network (cabling/MTU/dupe-IP/etc).

Are the two CIMCs (working and non-working) in the same network/VLAN/switch?

There is one known issue with MTU differences and PMTU typically when using VPN tunnels but that usually only impacts the Web GUI (full MTU packets) and not SSH (<<full MTU packets).
CSCwe22758 - After CIMC upgrade to 4.1(3b) and 4.2(2a) cannot access CIMC GUI and Intersight claim fails

Does the non-working work if you connect a laptop network connection directly to the CIMC (remove upstream )?
Does the non-working start working if the server is power-drained (remove all power cables from server for 30 seconds)?

[NeoChen722593]

@Steven Tardy 

Our two be6k servers on the same network, we can ping two servers,

 the two servers on the other site no manage by intersight, 

I alse use ucs_ipmi_tool on esxi, but it show "Get Device ID command failed".

and we'll try to shutdown the server and remove all power cables from server for 5 mins,

hope this can resolve the cimc problem.