单选题In BGP graceful restart， how does a peer router indicate the end of a route exchange？（）AAn open message with the E bit set.BAn update message with the E bit set.CAn open message with an end-of-RIB marker.DAn update message with an end-of-RIB marker.
单选题
In BGP graceful restart， how does a peer router indicate the end of a route exchange？（）
A
An open message with the E bit set.
B
An update message with the E bit set.
C
An open message with an end-of-RIB marker.
D
An update message with an end-of-RIB marker.
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相关考题：
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多选题Which pre-conditions must be met before an OSPF router can perform graceful restart？（）ARouter must be ABRBRouter must contain one sham link.CThe network topology must be stable.DRouter must be able to forward packets.ENeighbors must support graceful restart.
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