Tool/software: Starterware
HI Sir/Mrs，
At present, we use 23861 chip power supply frequently to show the problem of power supply of POE, and there are two phenomena.
A, individual ports do not power
B. No power supply (four ports) for the entire chip.
Through a simple search, found that, in the case of no power supply in the register detect/class enable value anomaly, read out the value is 0 x9b (1001 1011), four ports can be normal power supply value should be 0 XFF, through this value can be judged
Port1 - the normal power supply of class enable is normal
Port2 - normal, classeenable is not normal, can not provide power
Port3 - the detect is abnormal, classeenable is not normal, can not provide electricity
Port1 - the normal power supply of class enable is normal
In the case of the failure of the power supply on the port, we have tried the following two methods to avoid the problem (the problem is to change the value of the detect/class enable register only to 0xff, which is invalid).
1. Restart the POE switch
2. Resetting the working mode of POE (currently we are semi-auto mode)
B. Set the Detect/class Restart enable value
C, Reset register to Reset port or whole chip
A, b, and c can also be avoided in sequence
Some questions to ask:
1. What causes the appeal port2, port3 and how to solve this problem
2. What is the mode that your other customers choose from 23861 as the management type switch? Are there any disadvantages to the model that we currently use is the semi-auto model
