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3. Troubleshooting Functional Failures in Operation
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3.4.7 Communication 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
3 Check to see Threshold(W) and Allocate(W)
by the show power inline command.
Because a value in Allocate(W) is larger than one in Threshold(W), electricity is
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
logging command.
Power receiving equipment or connection cable might be faulty.
• 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.
No. Troubleshooting Steps and Command Action
1 Check the setting of failed link aggregation
using the show channel-group
command with "detail" parameter specified.
Check to see if the link aggregation mode matches that of the remote system. If the
mode is different from that of the remote system, change the mode so that it will
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."
No. Troubleshooting Steps and Command Action