Extron electronics VNM EC 200, User Manual, Page: 187 / 242

Other cluster control functions
Two buttons at the bottom of the Cluster page manage the state of the controller pair
(see figure 167 , 3 on page 175). The functions that are available are Migrate , Pair ,
and Unpair . Pair and Unpair share a single button.
• Migrate — When two controllers are paired, click to cause them to switch roles. The
service provider (primary VNM EC 200) becomes the backup (secondary VNM EC 200)
and the backup becomes the service provider.
•
Pair
— Click to cause a set of controllers to pair together initializing the service (cluster)
IP address and setting the units to operate in a shared-role state.
•
Unpair — Click to cause a controller pair to unpair, stopping the service (cluster) IP
address and return the units to independent states.
NOTE: An unpaired controller is not the same thing as a singleton. After unpairing,
the primary and secondary VNM EC 200s will not perform their role as controllers
until they have been paired back up.
Migrating a controller pair
1. Using a Web browser, navigate to the Web-based user interface by entering the LAN A
(eth0) physical IP address of the primary VNM EC 200, the physical IP address of the
secondary VNM EC 200, or enter the service (cluster) IP address for the primary and
secondary VNM EC 200s.
2. Navigate to the Configuration page.
3. Click on the Cluster link (see Cluster Page on page 175).
4.
Click Migrate at the bottom of the screen.
NOTE: The Web browser automatically logs out of the Web-based user interface
and returns to the login page.
Unpairing controllers
1.
Using a Web browser, navigate to the Web-based user interface by one of three
methods:
•
Enter the LAN A (eth 0 ) IP address of the primary VNM EC 200.
•
Enter the physical IP address of the secondary VNM EC 200.
•
Enter the service (cluster) IP address for the primary and secondary VNM EC 200s.
2.
Navigate to the Configuration page.
3. Click on the Cluster link (see Cluster Page ).
4. Click Unpair at the bottom of the screen.
NOTE:
Unpairing the VNM EC 200s can take several minutes.
Pairing controllers
See Pairing the VNM EC 200s on page 174.
VNM EC 200 • Dual (Redundant) Controller Configuration 177