NEC IP8800/S2400 Series, Troubleshooting Manual

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3.
Troubleshooting Functional Failures in Operation
37
2 Check the setting of failed port status using
the
show channel-group command
with "detail" parameter specified.
Check the status of each port. If all ports in a link aggregation group are Down, the
link aggregation group is also Down.
Take the action below for the Down port depending on the Reason displayed.
• CH Disabled
The link aggregation group is Disabled and Down.
•
Port Down
The link is down. See "
3.4 Network Interface Communication Failure ."
• Port Speed Unmatch
Due to mismatch of the line speed on other ports in the link aggregation group,
a degeneration has occurred. To avoid degeneration, match the speed on all
ports in the link aggregation group.
• Duplex Half
The mode is Half and the degenerated status has occurred. To avoid degenera-
tion, set the Duplex mode to Full.
• Port Selecting
Because the port aggregation conditions are being checked, the degeneration
has occurred. Wait until the check completes. If the degeneration is not recov-
ered though you wait for a while, check to see the operation status and settings
of the remote system.
• Waiting Partner Synchronization
The system has finished the port aggregation condition check and is waiting for
the synchronization of the connected port, so the degeneration has occurred. If
recovery does not occur after a while, check the remote system operation status
and settings.
• Partner System ID Unmatch
Partner System ID received from the connected port does not match the Partner
System ID of the group. As a result, the degeneration has occurred. To avoid de-
generation, check the remote system operation and wiring.
• LACPDU Expired
Since the valid LACPDU time from the connected port has expired, the port has
degenerated. Check the LACPDU statistics using the
show chan-
nel-group statistics
command with "lacp" parameter specified. Also,
check the remote system operation status.
•
Partner Key Unmatch
Since Key received from the connected port does not match Partner Key of the
group, the degeneration has occurred. To avoid degeneration, check the remote
system operation and wiring.
• Partner Aggregation Individual
Since link aggregation disabled is received from the connected port, the degen-
eration has occurred. To avoid degeneration, check the remote system operation
and settings.
• Partner Synchronization OUT_OF_SYNC
Since synchronization disabled is received from the connected port, the degen-
eration has occurred. (This occurs if configuration is changed on this system or
the line is blocked on the remote system.)
•
Port Moved
The connected port was connected with another port. Check the wiring.
• Operation of Detach Port Limit
Since the detached port limiting function is activated, the link aggregation group
is Down.
No. Troubleshooting Steps and Command Action