Upgrading the System Software When Running Redundant SAEs
When running the SRC software with redundant SAEs, we recommend that you run the same release of the SRC software on all C Series Controllers in the same Juniper Networks database community. Mixing SRC software releases in a network may cause shared configuration data to be placed in the Juniper Networks database that is not compatible with all versions of the SRC software. As a result, when running redundant SAEs, we recommend that you postpone any planned configuration changes to the C Series Controllers until you complete the SRC software upgrade on all C Series Controllers running in the Juniper Networks database community.
Use the following procedure to upgrade the SRC software on C Series Controllers in a network environment running redundant SAEs. Perform this procedure on each C Series Controller in a serial fashion.
- For each router managed by the SAE, issue the request sae shutdown device command to shut down the device driver and force a graceful failover to the redundant SAE.
- Disable the SAE by issuing the disable component sae command.
- Upgrade the SRC software by issuing the request system upgrade url url command.
- Reenable the SAE by issuing the enable component sae command.
