NEC IP8800/S6700 manual Communication Failure on Using Link Aggregation, Allocations, Indicated

3.Troubleshooting Functional Failures in Operation

No.	Troubleshooting Steps and Command	Action
3	Check to see Threshold(W) and Allocate(W)	Because a value in Allocate(W) is larger than one in Threshold(W), electricity is
	by the show power inline command.	not able to be provided. First, check to see the amount of power supply provided
		to the whole system, the amount of electrical power allocation to the ports, and
		power consumption of the ports. And then configure these items to adjust
		allocations.
4	Check to see if a fault occurs by the show	Power receiving equipment or connection cable might be faulty.
	logging command.	• When "0/x Supplying power was stopped by the overload detection." is
		indicated.
		Because overload is detected, electricity is not able to be provided. Check to see
		the power receiving equipment or the connection cables. If it is not recovered,
		change the type and length of the cables by seeing "Hardware Installation
		Guide."
		If devices providing PoE are connected with each other, disable the PoE
		function of the port by the power inline command.

3.4.7Communication Failure on Using Link Aggregation

If communication is disabled or if degenerated operation is performed when link aggregation is in use, isolate the problem using the failure analysis methods listed in the following table.

Table 3-13: Communication Failure Analysis Methods When Link Aggregation Is in Use

No.	Troubleshooting Steps and Command	Action
1	Check the setting of failed link aggregation	Check to see if the link aggregation mode matches that of the remote system. If the
	using the show channel-group	mode is different from that of the remote system, change the mode so that it will
	command with "detail" parameter specified.	match that of the remote system.
		If the link aggregation mode matches that of the remote system, check to see if the
		LACP starting methods for both ports are set to "passive." If they are set to
		"passive," change the setting on either one of the ports to "active."

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