Switches - Dell PowerConnect J-EX4200-24T Software Manual

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Understanding Automatic Software Update on Virtual Chassis Member Switches
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Documentation
NOTE: When you merge two Virtual Chassis that had not previously been
part of the same Virtual Chassis configuration, any configuration settings
(such as the settings for Telnet/FTP services, GRES, fast failover, VLANs,
and so on) that exist on the new master will become the configuration settings
for all members of the new Virtual Chassis, overwriting any other configuration
settings.
Understanding Virtual Chassis Configuration on page 704
Example: Assigning the Virtual Chassis ID to Determine Precedence During a Virtual
Chassis Merge on page 767
Assigning the Virtual Chassis ID to Determine Precedence During a Virtual Chassis
Merge (CLI Procedure) on page 800
Disabling Split and Merge in a Virtual Chassis Configuration (CLI Procedure) on page 799
The automatic software update feature automatically updates the Junos OS version on
prospective member switches as they are added to a Virtual Chassis configuration of
J-EX4200 Ethernet Switches so the new member switch immediately joins the Virtual
Chassis configuration and is put in the active state.
For a standalone J-EX4200 switch to join an existing Virtual Chassis configuration, it
must be running the same version of Junos OS that is running on the Virtual Chassis
master. When the master in a Virtual Chassis configuration detects that a new switch
has been added to the configuration, it checks the software version on the new switch.
If the software version on the new switch is not the same as the version running on the
master, the master keeps the new switch in the inactive state. If you have not enabled
the automatic software update feature, you will have to manually install the correct
software version on each prospective member switch as it is added to the Virtual Chassis
configuration.
Understanding Software Upgrade in a Virtual Chassis Configuration on page 698
Example: Configuring Automatic Software Update on Virtual Chassis Member Switches
on page 777
Configuring Automatic Software Update on Virtual Chassis Member Switches (CLI
Procedure) on page 800
Chapter 43: Virtual Chassis—Overview, Components, and Configurations
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