DCB settings required on CloudEngine 6800 switches to connect to the OceanStor 2600 v3

Hello,
Personally I'm not familiar with DCB, maybe some other people on the forum are and they will reply.
I can help with an example, which can serve you as a reference:
http://support.huawei.com/hedex/pages/EDOC110002054831180AFU/01/EDOC110002054831180AFU/01/resources/dc/dc_cfg_dcb_0016.html?ft=0&fe=10&hib=9.15.4.11.1&id=dc_cfg_dcb_0016&text=Example%20for%20Configuring%20DCB&docid=EDOC1100020548
How to check the negotiation status:
[~SwitchA] display dcb
M:Manual; A:Auto
-------------------------------------------------------------------------------
Interface PFC Name PFC Status ETS Name ETS Status App-Profile
-------------------------------------------------------------------------------
10GE1/0/1 default ENABLE(A) ets1 SUCCEED -
10GE1/0/2 default ENABLE(A) ets1 SUCCEED -
10GE1/0/3 default ENABLE(A) - - -
-------------------------------------------------------------------------------

Also, feel free to get in touch with TAC:
http://e.huawei.com/en/service-hotline-query