NEC IP8800/S6300 Manuale Utente

3.   

Troubleshooting Functional Failures in Operation

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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 "

• 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