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Appendix A
High Availability Features
High availability features include Routing Engine redundancy, graceful Routing Engine
switchover (GRES), nonstop bridging, nonstop active routing, graceful restart for
routing protocols, Virtual Router Redundancy Protocol (VRRP), and unified in-service
software upgrade (ISSU). Some high availability features are not supported by all
platforms and all PICs. For information about the first supported JUNOS release for
these features by PIC and platform, see the JUNOS High Availability Configuration
Guide.
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