waiting for help,please

Thanks for your inquiry about the M-LAG.
For limitations in connecting servers to the switch using the v-stp mode, you could check the M-LAG Configuration Notes.
First, when the switch is configured with both V-STP and M-LAG, in versions earlier than V200R002C50, the switch does not support the MSTP mode or STP multi-process, in V200R002C50 and later versions, the switch does not support the MSTP mode but supports the STP multi-process.
Second, you must enable STP on the peer-link interface and configure global V-STP.
And when the V-STP mode is used, two devices that constitute an M-LAG can choose not to function as root bridges on a Layer 2 network. The networking is flexible and the two devices support M-LAG cascading. V-STP is recommended because it can eliminate loops caused by incorrect M-LAG configurations or connections. This post was last edited by z00350373 at 2018-01-18 21:12.