Deployment Guide

1 2 up up 16049 up 16521
1 3 up up 16049 up 16384
1 4 up up 16181 up 16452
1 5 up up 16181 up 22215
Speed in RPM
The following is an example of the show system brief command to view the stack summary information.
Stack MAC : 4c:76:25:e4:ed:be
Reload-Type : normal-reload [Next boot : normal-reload]
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
------------------------------------------------------------------------------------
1 Management online Z9100-ON Z9100-ON 9-8(1-99) 136
2 Member not present
3 Member not present
4 Member not present
5 Member not present
6 Member not present
-- Power Supplies --
Unit Bay Status Type FanStatus FanSpeed(rpm)
---------------------------------------------------------------------------
1 1 up UNKNOWN up 32755
1 2 up UNKNOWN down 0
-- Fan Status --
Unit Bay TrayStatus Fan0 Speed Fan1 Speed
------------------------------------------------------------------------------------
1 1 up up 15919 up 16248
1 2 up up 16049 up 16521
1 3 up up 16049 up 16384
1 4 up up 16181 up 16452
1 5 up up 16181 up 22215
Speed in RPM
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
------------------------------------------------------------------
1/1/1 3/6/1 40 up up
1/2/1 3/7/1 40 up up
3/1/1 40 up down
3/2/1 40 up down
3/3/1 1/5/1 40 up up
3/4/1 1/6/1 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.
Stacking
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