Administrator Guide

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
4 Member not present
5 Member not present
Stack Unit in Card-Problem State Due to Configuration Mismatch
• Problem: A stack unit enters a Card-Problem state because there is a configuration mismatch
between the logical provisioning stored for the stack-unit number on the master switch and the
newly added unit with the same number.
• Resolution: From the master switch, reload the stack by entering thereload command in EXEC
Privilege mode. When the stack comes up, the card problem will be resolved.
Upgrading a Switch Stack
To upgrade all switches in a stack with the same Dell Networking OS version, follow these steps.
1. Copy the new Dell Networking OS image to a network server.
2. Download the Dell Networking OS image by accessing an interactive CLI that requests the server IP
address and image filename, and prompts you to upgrade all member stack units.
EXEC Privilege mode
upgrade system { flash: | ftp: | scp: | tftp: | usbflash: } partition
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Stacking