First: You can back up your configuration from principal switch - it will have shared and local configuration for both switches ("copy running-config [ftp/scp/usb etc])
Second: Two options how to default the configuration:
- copy default-config startup-config (will clear all configuration, but VCSid, RBid, VCS mode will remain the same) followed by reload
- Change VCSid and/or RBid, that will default configuration
Third: To Break (split) the cluster you need to disconnect ISL connection and change VCSid on one of the switches. Meaning if you want to have 2 stand alone switches connected to each other via regular link/port-channel - VCSid should be unique on each switch. recommended to remove isl configuration from the port
(no isl enable; no fabric enable)
Forth: Manually re-apply configuration from backup file; Shared configuration to both of them and local accordingly
