Dell PowerEdge XL 5133-4 Dell PowerEdge M I/O Aggregator Getting Started Guide - Page 32

To remove an Aggregator from the stack, enter the stack-unit 0 iom-mode standalone command in global configuration mode. After entering the command, save the configuration and reload the Aggregator for the change to take effect. Managing a Stack Master and Member Switches You can manage a stack of Aggregators as a single entity when they are connected together. Manage the stack from the CLI through the serial console connection or a remote Telnet session over the OOB management IP address. When a stack is created, one switch automatically becomes the master switch and another switch is elected standby master. The master switch maintains stack operation with minimal impact in the event of: • Switch failure • Inter-switch stacking link failure • Switch insertion • Switch removal If the master switch goes off line, the standby master replaces it as the new master. Stack Startup Topology Discovery When a stack is formed, a topology discovery process builds up a database that contains information about both switches in the stack, including the FTOS version, hardware version, management priority, and switch MAC address. Use the CLI (show system command) to view this information. Auto Stack Number Assignment During the stack formation process, a unique stack-unit number is assigned if the same number is assigned to more than one switch. After assignment is complete, each switch saves its stack-unit number. To view stack-unit numbers, enter the show system command. 32 Assembling a Switch Stack