Understanding Switch Stacks - Cisco Catalyst 3120 Software Manual

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Managing Switch Stacks

This chapter provides the concepts and procedures to manage switch stacks.

For complete syntax and usage information for the commands used in this chapter, see the command

reference for this release.

This chapter consists of these sections:

For other switch stack-related information, such as cabling the switches through their StackWise Plus

ports and using the LEDs to display switch stack status, see the hardware installation guide.

The Cisco Catalyst Blade Switch 3120 for HP does not support switch stacks with different types of

blade switches as members. Combining the Cisco Catalyst Blade Switch 3120 for HP with other types

of blade switches in a switch stack might cause the switch to work improperly or to fail.

Understanding Switch Stacks

A switch stack is a set of up to nine stacking-capable switches connected through their StackWise Plus

One of the switches controls the operation of the stack and is called the stack master. The stack master

and the other switches in the stack are all stack members. The stack members use the Cisco StackWise

Plus technology to work together as a unified system. Layer 2 and Layer 3 protocols present the entire

switch stack as a single entity to the network. The stack members can be in different enclosures.

The stack master is the single point of stack-wide management. From the stack master, you configure:

A switch stack is identified in the network by its bridge ID and, if it is operating as a Layer 3 device, its

router MAC address. The bridge ID and router MAC address are determined by the MAC address of the

stack master. Every stack member is identified by its own stack member number.

Understanding Switch Stacks, page 5-1

Configuring the Switch Stack, page 5-21

Accessing the CLI of a Specific Stack Member, page 5-25

Displaying Switch Stack Information, page 5-25

System-level (global) features that apply to all stack members

Interface-level features for each stack member

C H A P T E R

Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide

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