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Routing Protocols

  • Keep bypass tunnels operational during configuration changes (PTX10001-36MR, PTX10003, PTX10004, PTX10008, and PTX10016)—Starting in Junos OS Evolved Release 22.2R2, you can configure the operating system to keep bypass tunnels operational until the tunnels are no longer carrying local repair traffic, even during configuration change. Bypass tunnels that are carrying local repair traffic are in the BackupActive state. When you change the bypass-related configuration on software releases containing this feature, the OS keeps any bypass tunnels that are in BackupActive state up. When the bypass tunnels are no longer in BackupActive state, the operating system tears down the bypass tunnels. This feature ensures all local repair traffic reaches its destination and prevent traffic loss on label-switched paths (LSPs).

    Configure this feature at the [edit protocols rsvp interface all link-protection] hierarchy level. Use theshow rsvp session bypass command to check whether the bypass routes protecting an interface remain operational in BackupActive state after the configuration changes.