HA Backout Procedure

If you reach the point in your upgrade procedure where you have upgraded both Oracle® Enterprise Session Border Controllers in the HA node to a later release that you decide you no longer want to use, you can fall back to a previous release. This section shows you how to fall back to an older image with both systems in your HA node upgraded.

In the descriptions and processes outlined below, Oracle® Enterprise Session Border Controller1 is the active system and Oracle® Enterprise Session Border Controller2 is the standby system. The procedure uses these designations because when you have completed upgrade process specific to these releases, Oracle® Enterprise Session Border Controller1 is the active system.

To backout to a previous (older) release with the both Oracle® Enterprise Session Border Controllers in the HA node upgraded:

1. Change the boot parameters on Oracle® Enterprise Session Border Controller2 to use the appropriate Release SCX6.4.0 software image.

   Using one of these methods, access the boot parameters on Oracle® Enterprise Session Border Controller2:

   • Reboot the Oracle® Enterprise Session Border Controller using any of the ACLI reboot commands. Stop the booting process by hitting the Space bar on your keyboard to halt boot-up when you see this message: Press any key to stop auto-boot.... Type a c and press Enter to begin displaying the boot parameters.

   • In the ACLI configure terminal menu, type bootparam and press Enter to being displaying the list of boot parameters.

     Scroll through the boot parameters by pressing Enter. Stop when you reach the file name boot parameter.

     The following example uses the filenames /code/images/nnSCX640.xz and /boot/nnSCZ712.64.bz.

     ORACLE2# configure terminal
     ORACLE1(configure)# bootparam
     '.' = clear field;  '-' = go to previous field;  ^D = quit
     boot device          : eth0
     processor number     : 0
     host name            : boothost
     file name            : /boot/nnSCZ712.64.bz /code/images/nnSCX640.xz

     In the example above, type the appropriate Release S-CX6.4.0 file name next to the Release S-CZ7.1.2 file name. Press <Enter> to continue scrolling through the boot parameters.

     Exit to the main Superuser prompt.

     ORACLE2(configure)# exit
     ORACLE2#

2. Reboot Oracle® Enterprise Session Border Controller2.
3. Using the ACLI show version command to confirm that you are using the appropriate release.

   ORACLE2# show version
   ACME PACKET 4500 Firmware S-CX6.4.0 GA
   07/15/10
   ORACLE2#

4. Initiate a switchover on Oracle® Enterprise Session Border Controller2.

   ORACLE2# notify berpd force

   At this point, Oracle® Enterprise Session Border Controller2 becomes the active system running Release S-CX6.4.0. Oracle® Enterprise Session Border Controller1 is now the standby system running Release S-CZ7.1.2

5. On Oracle® Enterprise Session Border Controller1, change the boot parameters as you did in Step 1 of this procedure.
6. Reboot Oracle® Enterprise Session Border Controller1.