Automatic And Manual Stack Unit Failover - Dell S4048T Configuration Manual

Automatic and Manual Stack Unit Failover

Stack unit failover is the process of the standby unit becoming a management unit.
Dell Networking OS fails over to the standby stack unit when:
1 Communication is lost between the standby and primary stack unit.
2 You request a failover via the CLI.
To display the reason for the last failover, use the show redundancy command from EXEC Privilege mode.
Example of the show redundancy Command
Dell#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:
-- 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:
ACL Mgr:
LACP:
STP:
SPAN:
Dell#
0
0
Primary
Active
9.6(0.0)
Down
not present
mgmt-id
Full
Hot Failover
Enabled
3 times in 60 minutes
0
None
None
None
no block sync done
no block sync done
no block sync done
no block sync done
no block sync done
no block sync done
no block sync done
no block sync done
0
High Availability (HA) 419