Administrator Guide

To re-enable a downed stacking port, power cycle the stacked switch where the port is installed.
--------------------------------------MANAGMENT UNIT-----------------------------------------
Error:
Stack Port 48 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 52 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 52 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.
----------------------------------------MEMBER 2---------------------------------------------
Error: Stack Port 52 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.
Master Switch Recovers from Failure
Problem: The master switch recovers from a failure after a reboot and rejoins the stack:
• As a member unit if there is already a standby
• As a standby if there is no standby in the stack
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 dierent Dell Networking OS version than the master unit.
The switch does not come online as a stack unit.
Resolution: The version mismatch case is taken cared of by rmware synchronization, which automatically upgrades the unit to the
required Dell Networking OS version. You do not have to manually upgrade the unit.
To verify that the problem has been resolved and the stacked switch is back online, use the show system brief command.
Example of the Card Problem Error — Dierent Dell Networking OS Versions
Dell#show system brief
Stack MAC : 5c:f9:dd:ef:0b:c0
Reload-Type : normal-reload [Next boot : normal-reload]
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
---------------------------------------------------------
0 Member not present S5000
1 Member not present S5000
2 Member card problem S5000 S5000 9-1-0-0 64
3 Standby online S5000 S5000 9-1-0-1 64
4 Management online S5000 S5000 9-1-0-1 64
5 Member not present
6 Member not present
7 Member not present
8 Member not present
9 Member not present
10 Member not present
11 Member not present
Stacking
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