Reference Guide
is removed, the standby unit becomes the stack manager and Dell Networking OS elects a new standby
unit. Dell Networking OS resets the failed master unit: after online, it becomes a member unit; the
remaining members remain online.
Example of S-Series Stack Manager Redundancy (S50)
Stack#show redundancy
-- Stack-unit Status --
------------------------------------------------
Mgmt ID: 0
Stack-unit ID:
1
Stack-unit Redundancy Role: Primary
Stack-unit State: Active
Stack-unit SW Version: 7.8.1.0
Link to Peer: Up
-- PEER Stack-unit Status --
------------------------------------------------
Stack-unit State: Standby
Peer stack-unit ID: 2
Stack-unit SW Version: 7.8.1.0
-- Stack-unit Redundancy Configuration --
------------------------------------------------
Primary Stack-unit: mgmt-id 0
Auto Data Sync: Full
Failover Type: Hot Failover
Auto reboot Stack-unit: Enabled
Auto failover limit: 3 times in 60 minutes
-- Stack-unit Failover Record --
------------------------------------------------
Failover Count: 0
Last failover timestamp: None
Last failover Reason: None
Last failover type: None
--Last Data Block Sync Record: --
------------------------------------------------
Stack Unit Config: succeeded Mar 24 2009 20:35:14
Start-up Config: failed Mar 24 2009 20:35:14
Runtime Event Log: succeeded Mar 24 2009 20:35:14
Running Config: succeeded Mar 24 2009 20:35:14
ACL Mgr: succeeded Mar 24 2009 20:35:14
LACP: no block sync done
STP: no block sync done
SPAN: no block sync done
Management Access on S-Series Stacks
You can access the stack via the console port or VTY line.
• Console access — You may access the stack through the console port of the master unit (stack
manager) only. Similar to a standby RPM, the console port of the standby unit does not provide
management capability; only a limited number of commands are available. Member units provide a
limited set of commands.
• Remote access — You may access the master unit and standby unit in a stack through the dedicated
management Ethernet interfaces with SNMP, SSH, or via Telnet.
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Stacking