Juniper SRX5400 Hardware Manual page 301

To add SRX5K-SPC3s in an Services Gateway cluster without incurring downtime:
1. Use the console port on the Routing Engine to establish a CLI session with one of the devices in the
cluster.
2. Use the show chassis cluster status command to determine which services gateway is currently primary,
and which services gateway is secondary, within the cluster.
3. If the device with which you established the CLI session in Step
cluster, use the console port on the device that is the secondary node to establish a CLI session.
4. Use the show chassis fpc pic-status command to check the status of all the cards on both the nodes.
5. In the CLI session for the secondary services gateway, use the request system power off command to
shut down the services gateway.
6. Wait for the secondary services gateway to shut down completely and than remove the power cables
from the chassis.
7. Install the new SPC3 or SPC3s in the powered-off services gateway using the procedure in
an SRX5400 Services Gateway SPC" on page
Installing an SRX5800 Services Gateway SPC.
8. Insert the power cables to the chassis and power on the secondary services gateway and wait for it to
finish starting.
9. Reestablish the CLI session with the secondary node device.
10. Use the show chassis fpc pic-status command to make sure that all of the cards in the secondary node
chassis are back online.
11. Use the show chassis cluster status command to make sure that the priority for all redundancy groups
is greater than zero.
12. Use the console port on the device that is the primary node to establish a CLI session.
13. In the CLI session for the primary node device, use the request chassis cluster failover command to
fail over each redundancy group that has an ID number greater than zero.
2 is not the secondary node in the
297, or Installing an SRX5600 Services Gateway SPC, or
304
"Installing