Issue Description
Networking:
As shown in the following figure, a CE6850EI functions as the parent switch to set up an SVF system with leaf switches CE6810EIs.

Symptom:
Leaf switches cannot join the SVF system.
As shown in the following figure, a CE6850EI functions as the parent switch to set up an SVF system with leaf switches CE6810EIs.

Symptom:
Leaf switches cannot join the SVF system.