Configuration manual

The following is an example of the stack-link flapping error message.
--------------------------------------MANAGMENT
UNIT-----------------------------------------
Error: Stack Port 49 has flapped 5 times within 10 seconds.Shutting down this stack port now.
Error: Please check the stack cable/module and power-cycle the stack.
10:55:20: %STKUNIT1-M:CP %KERN-2-INT: Error: Stack Port 50 has flapped 5 times
within 10
seconds.Shutting down this stack port now.
10:55:20: %STKUNIT1-M:CP %KERN-2-INT: Error: Please check the stack cable/
module and
power-cycle the stack.
---------------------------------------STANDBY
UNIT------------------------------------------
10:55:18: %STKUNIT1-M:CP %KERN-2-INT: Error: Stack Port 50 has flapped 5 times
within 10
seonds.Shutting down this stack port now.
10:55:18: %STKUNIT1-M:CP %KERN-2-INT: Error: Please check the stack cable/module
and power-cycle the stack.
Master Switch Recovers from Failure
• Problem: The master switch recovers from a failure after a reboot and rejoins the stack as the standby
unit or member unit. Protocol and control plane recovery requires time before the switch is fully
online.
• Resolution: When the entire stack is reloaded, the recovered master switch becomes the master unit
of the stack.
Stack Unit in Card-Problem State Due to Incorrect Dell Networking OS Version
• Problem: A stack unit enters a Card-Problem state because the switch has a different Dell Networking
OS version than the master unit. The switch does not come online as a stack unit.
• Resolution: To restore a stack unit with an incorrect Dell Networking OS version as a member unit,
disconnect the stacking cables on the switch and install the correct Dell Networking OS version. Then
add the switch to the stack as described in Adding a Stack Unit. To verify that the problem has been
resolved and the stacked switch is back online, use the show system brief command.
Dell#show system brief
Stack MAC : 00:1e:c9:f1:00:9b
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
--------------------------------------------------------------------------
0 Management online I/O-Aggregator I/O-Aggregator 8-3-17-46 56
1 Standby
card problem I/O-Aggregator unknown 56
2 Member not present
3 Member not present
4 Member not present
5 Member not present
Card Problem — Resolved
Dell#show system brief
Stack MAC : 00:1e:c9:f1:04:82
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
----------------------------------------------------------------------
0 Management online I/O-Aggregator I/O-Aggregator 8-3-17-52 56
1 Standby
online I/O-Aggregator I/O-Aggregator 8-3-17-52 56
2 Member not present
3 Member not present
204
Stacking