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
 
1 

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

2 

Open a console window.

3 

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.

4 

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

5 

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.

6 

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

7 

Manually clear the activity switch alarms, as required.

End of steps