Failed Stack Node
If the show stacking command shows the stack state for a slot as Failed, check the following things:
- Does the show stacking stack-ports command show a port state as Inhibited? If so, the problem might be a duplicate slot number. If more than one node is using the same slot number, change the slot number on one of the affected nodes to a unique slot number.
- Is the affected node isolated by other nodes for which the stack state is listed as Disabled? If so, you need to enable stacking on the disabled nodes.
- Enter the show slot detail command. If the command displays License Mismatch, either upgrade the node license, or configure a license level restriction so that all master-capable nodes are at the same effective license level.
- Enter the show slot detail command. If the command displays Incompatible EXOS Version, log into the master node and use the synchronize slot command to update the failed node.