Dell Force10 C150 Configuration Manual page 1020

Figure 50-1. S-Series Stack Manager Redundancy
Stack#show redundancy
-- Stack-unit Status
------------------------------------------------
Mgmt ID:
Stack-unit ID:
Stack-unit Redundancy Role:
Stack-unit State:
Stack-unit SW Version:
Link to Peer:
-- PEER Stack-unit Status
------------------------------------------------
Stack-unit State:
Peer stack-unit ID:
Stack-unit SW Version:
-- Stack-unit Redundancy Configuration
------------------------------------------------
Primary Stack-unit:
Auto Data Sync:
Failover Type:
Auto reboot Stack-unit:
Auto failover limit:
-- Stack-unit Failover Record
------------------------------------------------
Failover Count:
Last failover timestamp:
Last failover Reason:
Last failover type:
-- Last Data Block Sync Record:
------------------------------------------------
Stack Unit Config:
Start-up Config:
Runtime Event Log:
Running Config:
Management Unit Selection on S-Series Stacks
FTOS has a selection algorithm to decide which stack units will be the primary and secondary management
units. During the bootup of a single unit or the stack, FTOS compares the priority values of all of the units
in the stack and elects the unit with the numerically highest priority the primary, and the next highest
priority the secondary.
For example, if you add a powered standalone unit to a stack, either the standalone unit or the stack reloads
(excluding the new unit), depending on which has the higher priority, the new unit or the existing stack
manager. If the new unit has the higher priority, it becomes the new stack manager after the stack reloads.
All switches have a default priority of 0; if a priority tie occurs, the system with the highest MAC address
supersedes, as shown in
1020 | Stacking S-Series Switches
--
--
--
--
succeeded
failed
succeeded
succeeded
ACL Mgr: succeeded
Figure 50-2.
0
1
Primary
Active
7.8.1.0
Up
Standby
2
7.8.1.0
--
mgmt-id 0
Full
Hot Failover
Enabled
3 times in 60 minutes
0
None
None
None
Mar 24 2009 20:35:14
Mar 24 2009 20:35:14
Mar 24 2009 20:35:14
Mar 24 2009 20:35:14
Mar 24 2009 20:35:14