How do I perform a server activity switch?

Purpose

Perform this procedure to reverse the primary and standby roles of the main servers in a redundant system. Consider the following before you perform a server activity switch.

  • A server activity switch stops and starts the primary main server. Server redundancy is unavailable until the main server is fully initialized as the new standby main server.

  • During a server activity switch:

    • The NFM-P raises an alarm about the activity switch; the alarm is not self-clearing.

    • A main server does not process SNMP traps, attempt to synchronize NEs, or collect statistics.

    • All GUI, browser, and clients lose connectivity to the NFM-P.

    • Auxiliary servers process outstanding requests, but do not communicate with a main server.

  • After a server activity switch:

    • The new primary main server deploys outstanding configuration changes to NEs, establishes communication with the auxiliary servers, and synchronizes information with the auxiliary servers.

    • The GUI clients automatically connect to the new primary main server.

    • XML API and browser clients must be redirected to the new primary main server.

Steps
 

Log in to the primary main server station as the nsp user.


Open a console window.


Enter the following:

bash$ /opt/nsp/nfmp/server/nms/bin/nmsserver.bash force_restart ↵

The server activity switch begins. The primary main server restarts as the standby main server, and the standby main server restarts as the primary.


When the activity switch is complete, close the console window.


Reconnect each browser client to the NFM-P.

  1. Close the browser window.

  2. Open the browser window.

Note: After an activity switch, depending on the state of the former primary main server station, the NFM-P automatically redirects sign-in requests to the new primary main server. If the redirection fails to occur, you must open the sign-in page using the address of the new primary main server.


Redirect each XML API client to the new primary main server.


Manually clear the activity switch alarms, as required.

End of steps