High Availability
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NSR support for RSVP-TE dynamic tunnels (MX Series and PTX Series)—Starting in Junos OS Release 21.2R1, we support nonstop active routing (NSR) for RSVP-Traffic Engineering (RSVP-TE) dynamic tunnels.
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NSR support for SR-TE (MX Series and PTX Series)—Starting in Junos OS Release 21.2R1, we support NSR for segment routing–traffic engineering (SR-TE), allowing for hitless traffic flow on Routing Engine switchover. Routes using next hops from SR-TE policies that don't support NSR might experience traffic loss on switchover. The SR-TE policies that don't support NSR are DCSPF and Path Computation Element (PCE).