Which statements correctly describe OSPF Graceful Restart when the restarting router can retain its forwarding tables through the restart?
AOS-CX supports configuring an OSPF graceful-restart helper on the relevant 6100/6200 platform family. OSPF graceful restart uses Grace-LSAs on the associated segment: a fully adjacent neighbor that receives the Grace-LSA can enter helper mode and preserve the restarting router’s adjacency during the grace period. AOS-CX 10.07 IP Routing Guide, RFC 3623: Graceful OSPF Restart
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