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RESET MASTERSHIP
RESET MASTERSHIP
Use the RESET MASTERSHIP command to force an election to take place
between all management modules in the hub. The result of this command is to
elect a new master management module, based on the mastership priority
setting. The DMM-elected master provides all command and control capabilities
in the hub. The controller places all other DMMs in the hub in standby mode.
CoreBuilder 5000 DMMs always take precedence over ONline™ management
modules.
This command causes a master management module election in the hub in
which it is installed. The management module with the highest mastership
priority setting becomes master. You set a DMM’s mastership priority using the
SET MODULE MASTERSHIP_PRIORITY command. A DMM always assumes
mastership over an ONline management module installed in a CoreBuilder 5000
hub.
You can only enter this command from a Master DMM and you must SAVE or
REVERT any changes before you execute this command.
CAUTION:
Do not enter this command from a Telnet session. Slave DMMs do not
have network connectivity. Resetting mastership from a Telnet session may cause
you to lose the session without being able to reconnect.
The time it takes to complete an election depends on a management module's
mastership priority setting. A DMM with a mastership priority value of 10
completes a mastership election fastest. A DMM with a mastership of 1,
however, takes about 90 seconds to complete a mastership election. Set the
master DMM to 10 and the slave DMMs to mastership priority values of 7, 8, or
9 to facilitate the election process.
Format
Example
The following command causes the DMM to initiate a mastership election:
CB5000> reset mastership
Resigning
Related Commands
RESET HUB
SET MODULE MASTERSHIP_PRIORITY
reset mastership