Communication Failures When Link Aggregation Is Used - Alaxala AX6700S Troubleshooting Manual

3.4.7 Communication failures when link aggregation is used

If communication is not possible or if degraded operation is in effect when link aggregation
is used, isolate the cause of the problem according to the failure analysis method in the
following table.
Table 3-13 Communication failure analysis method when link aggregation is used
No. Items to check and commands
1 Use the
show channel-group
command with the
parameter to check the link
aggregation setting that caused the
communication failure.
2 Use the
show channel-group
command with the
parameter to check the operating
status of the port that caused the
communication failure.
Action
Make sure the link aggregation mode is the same as the mode for
the remote device. If the modes are different, modify the link
detail
aggregation mode so that it will be the same as the mode for the
remote device.
If the link aggregation modes match, check whether the LACP
start method is set to passive for both ports. If passive is set for
both ports, change the setting of one of the ports to active.
Check the status of each port displayed for Status. If all ports of
the link aggregation group have gone down, the link aggregation
detail
group also goes down.
Based on the value displayed for Reason, take one of the actions
described below on ports that have gone down.
3 Troubleshooting Functional Failures During Operation
CH Disabled
The link aggregation group is disabled and down.
Port Down
The status of the port is link down. For details,
see 3.4 Network interface communication failures.
Port Speed Unmatch
The line speed of the port is different from that of the other
ports in the link aggregation group, and degradation has
occurred. To avoid the degradation, specify the same speed
for all ports in the link aggregation group.
Duplex Half
The mode is and degradation has occurred. To avoid
Half
the degradation, set Duplex mode to Full.
Port Selecting
The port aggregation condition check is being performed,
and degradation has occurred. Wait for a while, and if the
problem is not resolved, check the operating status and the
settings of the remote device.
Waiting Partner Synchronization
The port aggregation condition check has been finished, but
degradation has occurred because the system is waiting for
the partner port to be synched. Wait for a while, and if the
problem is not resolved, check the operating status and the
settings of the remote device.
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