what is RPF（ Reverse Path Forwarding ）？
what is RPF（ Reverse Path Forwarding ）？
相关考题：
组播转发技术中最为核心的技术就是RPF,下列关于RPF说法正确的有()。 A.RPF的全称为Reverse Path Forwarding;B.RPF的转发依据是报文的目的地址和单播路由表;C.PRF的转发依据是报文的源地址和单播路由表;D.RPF和具体的某种单播路由协议是无关的。
下列关于RPF(Reverse Path Forwarding)的说法正确的是() A.RPF是广播数据采用的数据包转发方法B.RPF是组播数据包采用的数据转发方法C.RPF依据组播包源地址执行数据转发D.RPF依据组播包目的地址执行数据转发
What operation on relations R and S produces the relation shown below?A．UnionB．DifferenceC．IntersectionD．Division
r1 is the hub ， multipoint mode subinterface， r2 and r3 is spoke， when r2 down at the spoke， What will r1 react？how about r3？
What is true about Unicast RPF in strict mode？（）A、It works well with a multihomed environment.B、It will inspect IP packets that are encapsulated in tunnels， such as GRE，LT2P，or PPTP.C、uRPF is performed within the CEF switching path.D、There might be a problem with DHCP as Unicast RPF is blocking packets with a 0.0.0.0 sourceaddress.
What Cisco IOS feature examines packets received to make sure that the source address and interfaceare in the routing table and matck the interface that the packet was received on？（）A、MPLS Traffic EngineeringB、Dynamic access-listsC、AuthenticationD、Receive ACLE、Unicast RPF
Which two statements about RPF checks in Multicast Source Discovery Protocol （MSDP） are true？（）A、It prevents message looping， Session Advertisement （SA）messages must be RPF checkedB、RPF check should be done against the route to the source S of the corresponding PIM-SM domainC、RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain，which originated the SAD、RPF checking Session Advertisement （SA） messages will cause message looping
What is the benefit of using Anycast RP via RFC 4610 for IP multicast RP redundancy？（） A、 Improves convergence of the multicast network due to enhanced RPF checksB、 Simplifies the number of control plane protocols over other RP redundancy methodsC、 Eliminates the use of Protocol Independent Multicast （PIM） in the topologyD、 Increases the administrative distances in Multicast Source Discovery Protocol （MSDP） configuration
单选题What is true about Unicast RPF in strict mode？（）AIt works well with a multihomed environment.BIt will inspect IP packets that are encapsulated in tunnels， such as GRE，LT2P，or PPTP.CuRPF is performed within the CEF switching path.DThere might be a problem with DHCP as Unicast RPF is blocking packets with a 0.0.0.0 sourceaddress.
单选题Given： What is the result？（）A An exception is thrown at runtime.B r， e， o，C Compilation fails.D r， t， t，
多选题关于组播RPF检查，下面说法哪些是错误的（）A组播RPF检查不依赖单播路由B所有组播协议都使用RPF检查C路由器收到组播报文，但RPF检查失败，将丢弃收到的组播报文DRPF检查的作用有2个，1是防止组播路由发生环路；2是防止转发冗余的组播数据报文
单选题What is the benefit of using Anycast RP via RFC 4610 for IP multicast RP redundancy？（）A Improves convergence of the multicast network due to enhanced RPF checksB Simplifies the number of control plane protocols over other RP redundancy methodsC Eliminates the use of Protocol Independent Multicast （PIM） in the topologyD Increases the administrative distances in Multicast Source Discovery Protocol （MSDP） configuration
问答题r1 is the hub ， multipoint mode subinterface， r2 and r3 is spoke， when r2 down at the spoke， What will r1 react？how about r3？
单选题What Cisco IOS feature examines packets received to make sure that the source address and interfaceare in the routing table and matck the interface that the packet was received on？（）AMPLS Traffic EngineeringBDynamic access-listsCAuthenticationDReceive ACLEUnicast RPF
填空题If((6-3)r+4)/2= 13, what is the value of r?____