Cisco AJ732A - MDS 9134 Fabric Switch Configuration Manual page 96

In-Service Software Upgrade (ISSU) in a Two-Node Cluster
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
The upgrading node sends a message to the other node of the intent to leave the cluster. The
•
upgrading node can either be a master node or a slave node.
• The remaining node remains in the cluster and performs the role of the master node if it was a slave
node. This node continues to remain in the cluster with the quorum intact.
• After the ISSU is completed and the switches boot up, the upgraded node rejoins the cluster as a
slave node.
Note This feature is tied to the internals of ISSU logic and no additional commands need to be executed.
Cisco MDS 9000 Family Storage Media Encryption Configuration Guide
4-34
Chapter 4 Cisco SME Cluster Management
OL-18091-01, Cisco MDS NX-OS Release 4.x