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High Availability

  • High availability enhancements for Packet Forwarding Engine sFlow, J-Flow, and port mirroring (ACX7348)—The sFlow, J-Flow, and port mirroring processes in the Packet Forwarding Engine maintain high availability during a Routing Engine switchover. These processes restart on the new active node, causing session filters to persist in the hardware. The hardware continues sending packets, but session statistics reset as new sessions from the process perspective. Inline sessions remain unaffected, which ensures continuous monitoring and data collection with minimal disruption to service.

    [See Understand Graceful Routing Engine Switchover for Junos OS Evolved.]

  • BGP support for static tunnels (ACX7348)—You can utilize static tunnels with BGP while running other protocols such as OSPF, IS-IS, RSVP, and LDP over these tunnels. Tunnel encapsulation and de-encapsulation entries synchronize from the primary Routing Engine to the backup Routing Engine for seamless switchover. However, after the switchover, statistics reset to zero on the new primary Routing Engine.

    [See BGP Overview.]