TheOSPFRFC3623GracefulRestartfeatureallowsyoutoconfigureIETFNSFinultivendornetworks.WhenusingOSPFGracefulRestart，whichmechanismisusedtocontinueforwardingpacketsduringaswitchover？（）A.Reverse Path ForwardingB.Hardware-based forwardingC.UDP forwardingD.Layer 2 Forwarding

单项选择题

The OSPF RFC 3623 Graceful Restart feature allows you to configure IETF NSF in ultivendor networks. When using OSPF Graceful Restart，which mechanism is used tocontinue forwarding packets during a switchover？（）

A.Reverse Path Forwarding
B.Hardware-based forwarding
C.UDP forwarding
D.Layer 2 Forwarding

CCIE系列认证综合练习