Users Guide

The following is an example of the show system brief command to view the stack summary information.
Dell#show system brief
Stack MAC : 00:01:e8:8a:de:48
Reload Type : normal-reload
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
--------------------------------------------------------
0 Member not present
1 Member not present
2 Member not present
3 Management online S4810 S4810 8-3-12-13 64
4 Member not present
5 Member not present
6 Member not present
7 Member not present
8 Member not present
9 Member not present
10 Member not present
11 Member not present
The following example shows the show system stack-ports command.
Dell#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
Inuencing Management Unit Selection on a Stack
Stack priority is the system variable that Dell 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.
• Inuence the selection of the stack management units.
CONFIGURATION mode
stack-unit priority
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.
826
Stacking