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This Article explains how to create a Stack on Dell Networking Force10 S25/S50 Switches

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Objectives

1. Important Points to Remember
2. Needed Hardware
3. Creating Stack
4. Verify System and Stack-Port Status
5. Reset a Switch Removed from Stack to Default

Important Points to Remember

• You may stack up to eight S25/S50 systems in combination.
• The S25 and S50 systems support mixed stacking, as long as the units have the same FTOS version.
• You may not connect 12G and 24G stack ports.

Needed Hardware

Stacking Modules

- not interchangeable

- Types

24 Gigabit - 1 port, Install 2 modules for Ring Topology

12 Gigabit - 2 port

Cables

- bi-directional

- length

4 meters

60 centimeters

Picture of Hardware Components

Creating a Stack

Command	Purpose
FTOS# show version	Verify that each unit has the same FTOS version prior to stacking them together.
FTOS# stack-unit renumber	Pre-configure unit numbers for each unit so that the stacking is deterministic upon boot up. (Optional)
FTOS(config)# stack-unit priority	Configure the switch priority for each unit to make management unit selection deterministic. (Optional)
Connect the units using stacking cables and modules
FTOS# show system brief	Power the stack one unit at a time. Start with the management unit, then the standby, followed by each of the members in order of their assigned stack number (or the position in the stack you want each unit to take). Allow each unit to completely boot, and verify that the unit is detected by the stack manager, and then power on the next unit.

Verify System and Stack-Port Status

Reset a Switch Removed from Stack to Default

The running-configuration and startup-configuration are synchronized on all stack units. A stack member that is disconnected from the stack maintain this configuration.

To remove a stack member from the stack, disconnect the stacking cables from the unit. You may do this at any time, whether the unit is powered or unpowered, online or offline.

The stack continues to use the master’s chassis MAC address even after a failover. The MAC address is not refreshed until the stack is reloaded and a different unit becomes the stack manager.

Command	Purpose
FTOS# reset stack-unit 0-11	Reload a stack-unit.
FTOS# reset-self	Reload a member unit, from the unit itself.
FTOS# reset stack-unit 0-11 hard	Reset a stack-unit when the unit is in a problem state.