Graceful restart is supported on all routing
platforms. To implement graceful restart for particular features,
your system must meet these minimum requirements:
JUNOS Release 5.3 or later for aggregate route, BGP, IS-IS,
OSPF, RIP, RIPng, or static route graceful restart
JUNOS Release 5.5 or later for RSVP on egress provider
edge (PE) routers
JUNOS Release 5.5 or later for LDP graceful restart
JUNOS Release 5.6 or later for the CCC, TCC, Layer 2 VPN,
or Layer 3 VPN implementations of graceful restart
JUNOS Release 6.1 or later for RSVP graceful restart
on ingress PE routers
JUNOS Release 6.4 or later for PIM sparse mode graceful
restart
JUNOS Release 7.4 or later for ES-IS graceful restart
(J Series Services Routers)
JUNOS Release 8.5 or later for BFD session (helper mode
only)—If a node is undergoing a graceful restart and its BFD
sessions are distributed to the Packet Forwarding Engine, the peer
node can help the peer with the graceful restart
JUNOS Release 9.2 or later for BGP to support helper mode
without requiring graceful restart to be configured
