Deployment Guide

The following is an example of the stack-link apping 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 dierent 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
4 Member not present
5 Member not present
Stack Unit in Card-Problem State Due to Conguration Mismatch
• Problem: A stack unit enters a Card-Problem state because there is a conguration mismatch between the logical provisioning stored
for the stack-unit number on the master switch and the newly added unit with the same number.
Stacking
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