Backup Management Agent - Enterasys Vertical Horizon VH-2402S2 Configuration Manual

Backup Management Agent

Note the following points about master and backup management agents:
•
The VH-SMGMT2 with software version 02.06.00.00 supports a
stack master management agent and a backup management agent.
The agent with the lower stack ID will be the master. Every 5 minutes
the master agent downloads the entire configuration data to the
backup agent. Any configuration changes made to the master agent
will be synchronized incrementally with the backup agent as they
occur.
•
Up to a maximum of two Management Modules (one master and one
back-up), may exist within a stackable configuration, which may
consist of up to seven switches in a stack.
•
The Management Modules (master or backup) cannot be "hot"
inserted. The "hot" removal of the master or the backup Management
Module will cause system instability and will require a manual reboot
of the entire stack.
•
The master management agent (version 02.06.00.00 or greater) will
synchronize the system software with that of the backup
management. This ensures that the backup agent always contains
the same version of software as the master agent. The system
software synchronization is performed as a background task,
requiring 10 minutes for the master agent to download the software
to the backup agent. The stack continues to operate while the backup
agent reboots after loading the software code.
•
Upon the failure or "hot" removal of the master Management Module
within a stackable configuration, the following occurs:
- A "Trap" is sent, a "Log event" is logged, the switch is re-booted
and the backup Management Module takes over without loss of
configuration settings.
- The fail-over time of master management to that of the backup
management in a medium-size stackable configuration is
approximately 2 minutes. Consequently, network traffic is
disrupted during the fail-over period.
- The backup management's "Backup Master" state changes to a
"Master" state and the switch Unit IDs will also reflect the new
change.
- All ports will still be active and the switch will continue forwarding
traffic in a normal operative manner.
- If a Management Module were to be re-installed, the newly-
installed Management Module would assume the role of "Master"
agent with the incumbent one changing status to that of "Backup
Master" agent.
- If you need to replace a failed master Management Module, you
can retain all configuration settings by moving the backup agent
module to the location of the failed master agent. A new
Management Module can then be installed in the location of former
backup agent.
2 Management Overview VH-2402S2