Managing A Stack; Master And Member Switches; Stack Startup - Dell PowerEdge M I/O Aggregator Getting Started Manual

To remove an Aggregator from the stack, enter the
command in global configuration mode. After entering the
standalone
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
stack-unit 0 iom-mode