A、Graceful restart allows session information recovery without disruption to the network.
B、A node can perform a graceful restart to help a neighbor recover its state. The label bindings are kepton state information, which helps the failed node recover faster and does notaffect the current for wardtraffic.
C、Graceful restart allows a node to recover state from its neighbor when there is no RP or before thedevice undergoes SSO.
D、Graceful restart does not allow session information recovery.
E、During a graceful restart, the router removes any stale prefixes after a timer for stale entries expire
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