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  • MACsec with GRES and NSR (MX140 and MX480 with the MIC-3D-20GE-SFP-E, MIC-3D-20GE-SFP-EH, and MIC-MACSEC-20GE line cards)—Starting in Junos OS Release 21.2R1, Media Access Control Security (MACsec) support includes GRES and nonstop active routing (NSR) to provide nonstop MACsec service during a Routing Engine switchover.

    [See Configuring Media Access Control Security (MACsec) on Routers.]