Users Guide

Removing Front End Port Stacking
To remove the conguration on the front end ports used for stacking, use the following commands.
1 Remove the stack group conguration that is congured.
CONFIGURATION mode
no stack-unit id stack-group id
2 Save the stacking conguration on the ports.
EXEC Privilege mode
write memory
3 Reload the switch.
EXEC Privilege mode
reload
After the units are reloaded, the system reboots. The units come up as standalone units after the reboot completes.
Troubleshoot a Stack
To troubleshoot a stack, use the following recovery tasks.
• Recover from Stack Link Flaps
• Recover from a Card Problem State on a Stack
Recover from Stack Link Flaps
Stack link integrity monitoring enables units to monitor their own stack ports and disable any stack port that aps ve times within 10
seconds.
Dell Networking OS displays console messages for the local and remote members of a apping link, and on the primary (master) and
standby management units as KERN-2-INT messages if the apping port belongs to either of these units.
In the following example, a stack-port on the master aps. The remote member, Member 2, displays a console message, and the master
and standby display KERN-2-INT messages.
To re-enable the downed stack-port, power cycle the oending unit.
Example of Console Messages About Flapping Link
---------------------MANAGMENT UNIT------------------------------
Error: Stack Port 50 has flapped 5 times within 10 seconds.Shutting down this st
ack 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 w
ithin 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.
---------------------MEMBER 2-----------------------------------
Error: Stack Port 51 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.
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Stacking