If the packet has arrived on the best return path to the source by doing a reverse lookup in the FIB table. Does a lookup of the Cisco Express Forwarding table for packet forwarding. Checks output ACLs on the outbound interface. Forwards the packet. Unicast...
Security Configuration Guide: Unicast Reverse Path Forwarding Cisco IOS XE Release 3S (Cisco ASR 920) Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883 TH...
当Unicast RPF在某个接口上启用,路由器检查所有进入此接口的数据包,确定其源IP地址和源接口在路由表中存在。这种“向后看”的能力只有当Cisco express forwarding (CEF) 启用时才生效,因为其依赖于Forwarding Information Base (FIB),FIB是CEF生成的。 注意: Unicast RPF只能在接口的input方向上。 Unicast RPF检查从...
uRPF(Unicast Reverse Path Forwarding) 概念和原理 这是网络设备的一个安全特性,主要功能是用于防止基于源地址欺骗的网络攻击行为,说简单一点就是在IP数据包转发的时候不单基于目的地址查看路由表,对源地址同样进行查表,如未能查到路由(一般不是默认路由,但根据策略不同行为稍有区别),则不对数据包进行转发;从路由...
(scalar:Enum8)Unicast Reverse Path Forwarding StatusSELECTION: 1 - enabled 2 - disabled DEFAULT: enabled Related Documentation For other CLI options, see the Cisco Nexus 9000 Series NX-OS Command Reference: http://www.cisco.com/c/en/us/support/sw...
URPF(Unicast Reverse Path Forwarding)反向路径转发 uRPF(Unicast Reverse Path Forwarding)是一种单播反向路由查找技术,用于防止基于源地址欺骗的网络攻击行为。 URPF技术会首先获取包的源地址和入接口,而后以源地址为目的地址,在路由转发表中查找相对应的转发接口是否与入接口匹配,如不匹配则认为该源地址是伪装的,并将...
Cisco IOS XE Security Configuration Guide: Securing the Data Plane, Release 2 - Configuring Unicast Reverse Path Forwarding [Cisco IOS XE Software Release 2] CIX Release 被引量: 0发表: 0年 Efficient reverse path forwarding check mechanism An efficient Reverse Path Forwarding (RPF) check mechanism...
display trill forwarding-path unicast命令用来查询TRILL单播转发路径。 命令格式 display trill forwarding-path unicast role { ingress dst-nickname dst-nickname | transit dst-nickname dst-nickname | egress out-interface eth-trunk interface-number } { eth-type { ip | l2 | dhcp | arp } | src-mac...
After the link between Switch B and Switch C fails, the forwarding path switches to Switch A -> Switch B -> Switch D -> Switch E. At the early stage of the path switchover, there is a high probability that the status of the neighbor relationship between Switch B and Switch C flaps ...
In a single-path internetwork, split horizon with poison reverse has no greater benefit than split horizon. However, in a multipath internetwork, split horizon with poison reverse greatly reduces count-to-infinity problems and routing loops. Count-to-infinity problems can still occur in a multi...