Deployment Guide

Table Of Contents
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 flaps five times
within 10 seconds.
Dell EMC Networking OS displays console messages for the local and remote members of a flapping link, and on the primary
(master) and standby management units as KERN-2-INT messages if the flapping port belongs to either of these units.
In the following example, a stack-port on the master flaps. 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 offending unit.
Example of Console Messages About Flapping Link
Recover from a Card Problem State on a Stack
If a unit added to a stack has a different Dell EMC Networking OS version, the unit does not come online and Dell EMC
Networking OS cites a card problem error.
To recover, disconnect the new unit from the stack, change the Dell EMC Networking OS version to match the stack, and then
reconnect it to the stack.
Example of Card Problem Error on a Stack - Different Dell EMC Networking OS Versions
870
Stacking