Reference Guide

• Reload a member unit, from the unit itself.
EXEC Privilege mode
reset-self
• Reset a stack-unit when the unit is in a problem state.
EXEC Privilege mode
reset stack-unit {hard}
Verify a Stack Configuration
The light of the LED status indicator on the front panel of an S4820T stack identifies the unit’s role in the stack.
• Off indicates the unit is a stack member.
• Blinking green indicates the unit is the stack standby.
• Solid green indicates the unit is the stack master (management unit).
Displaying the Status of Stacking Ports
To display the status of the stacking ports, including the topology, use the following command.
• Display the stacking ports.
EXEC Privilege mode
show system stack-ports
The following example shows four switches stacked together with two 40G links in a ring topology.
Example of Viewing Status for Stacked Switches in a Ring Topology
FTOS#show system stack-ports
Topology: Ring
Interface Connection Link Speed Admin Link Trunk
(Gb/s) Status Status Group
-----------------------------------------------------
1/48 7/56 40 up up
1/52 5/60 40 up up
2/56 6/52 40 up up
2/60 4/52 40 up up
3/48 7/52 40 up up
3/52 5/56 40 up up
4/52 6/48 40 up up
4/56 4/48 40 up up
FTOS#
The following example shows the parameters for the management unit in the stack.
Example of Viewing Status for a Single Switch
FTOS#show system stack-unit 1
-- Unit 1 --
Unit Type : Management Unit
Status : online
Next Boot : online
Required Type : S4810 - 52-port GE/TE/FG (SE)
Current Type : S4810 - 52-port GE/TE/FG (SE)
Master priority : 0
Hardware Rev : 3.0
Num Ports : 64
Up Time : 1 min, 14 sec
FTOS Version : 4810-8-3-12-1447
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