This value sets, in seconds, how long the router waits to receive an End-of-RIB marker from its BGP peers after restarting before it stops waiting and proceeds with its own route processing during graceful restart. It is used to bound how long the router will delay full route convergence while waiting for peers to finish resending their routing information. For example, setting this to 600 gives peers up to ten minutes to finish signaling they have sent all their routes before the router moves on regardless.