This document describes the steps for performing a failover of the Service Redundancy Group (SRG) in a Juniper SRX Multi-Node High Availability (MNHA) environment. The procedure allows for the seamless transfer of SRG services from the Active node to the Backup node.

Terminology and Key Concepts

• Service Redundancy Group (SRG): A designated group of services that can be transferred between nodes in the MNHA setup.
• Active Node: The node currently running SRG services.
• Backup Node: The standby node, ready to take over SRG services if the Active node fails or during a manual failover.
• Peer ID: Identifies nodes within the MNHA setup; each SRX device has a unique Peer ID.

The below command displays the SRG status, including Active and Backup roles for each SRG.

• show chassis high-availability information
  
  

To trigger the failover, run request chassis high-availability failover command on the Active node. Replace <peer-id> with the Peer ID of the Backup node and <SRG_ID> with the actual SRG ID.

• request chassis high-availability failover peer-id <peer-id> services-redundancy-group <SRG_ID>

After running the failover command, verify that the Backup node has successfully taken over as the Active node.

• show chassis high-availability information  
  
  

Confirm that the SRG role has moved to the Backup node, now acting as the Active node.