Administrator Guide

Unit UnitType Status ReqTyp CurTyp Version Ports
------------------------------------------------------------------------------------
1 Member not present S3048-ON
2 Member not present
3 Management online S3048-ON S3048-ON 9.8(0.0P2) 52
4 Member not present
5 Member not present
6 Member not present
-- Power Supplies --
Unit Bay Status Type FanStatus FanSpeed(rpm)
---------------------------------------------------------------------------
3 1 up AC up 8032
3 2 absent absent 0
-- Fan Status --
Unit Bay TrayStatus Fan0 Speed
------------------------------------------------------------------------------------
3 1 up up 18000
3 2 up up 18000
3 3 down
Speed in RPM
DellEMC#
The following example shows the show system stack-ports command.
DellEMC#show system stack-ports
Topology: Ring
Interface Connection Link Speed Admin Link Trunk
(Gb/s) Status Status Group
------------------------------------------------------------------
1/56 3/56 40 up up
1/60 3/60 40 up up
3/48 40 up down
3/52 40 up down
3/56 0/56 40 up up
3/60 0/60 40 up up
Influencing Management Unit Selection on a Stack
Stack priority is the system variable that Dell EMC Networking OS uses to determine which units in the stack are the master and standby
management units. If multiple units tie for highest priority, the unit with the highest MAC address prevails.
If management was determined by priority only, a change in management occurs when:
• the management unit is powered down or a failover occurs.
• you disconnect the management unit from the stack.
When the management unit fails, the unit disappears from the stack topology. At that time, the standby unit detects the communication
loss and switches from the standby unit role to the management unit role in the stack. From the remaining units in the stack, the system
selects a new standby unit based on the unit priority using the same algorithm used when the stack was initially created. When the failed
unit recovers, it takes the next available role, usually that of a stack member.
• Influence the selection of the stack management units.
CONFIGURATION mode
stack-unit unit-number priority priority-value
The unit with the numerically highest priority is elected the master management unit, and the unit with the second highest priority is
the standby unit.
The range is from 1 to 14.
The default is 0.
784
Stacking