diff --git a/d36-EIGRP.md b/d36-EIGRP.md index b1a8547..4de8a26 100644 --- a/d36-EIGRP.md +++ b/d36-EIGRP.md @@ -977,4 +977,21 @@ EIGRP的拓扑表,是由EIGRP的各种协议相关模块(Protocol-Dependent - 由邻居路由器所报告的到目的网络的报告距离(RD) - 目的网络的路由源(仅针对那些外部路由),The route source(only external routes) of the destination network -> **注意**:尽管在拓扑表中包含了 +> **注意**:尽管在拓扑表中包含了最大传输单元(MTU),但EIGRP并不会在实际的度量值计算中使用到该数值。而是该MTU仅简单地作为判断到目的网络数据包大小最小值而被追踪。接口的最大传输单元指定了经某条链路,在无需将数据报或数据包拆分到更小片的情况下,所能传输的数据报最大大小(The interface MTU specifies the largest size of datagram that can be transferred across a certain link without the need of fragmentation, or breaking the datagram or packet into smaller pieces)。 + +使用`show ip eigrp topology`命令,就可查看到EIGRP拓扑表的内容。该命令下可用的选项如下所示: + +``` +R2#show ip eigrp topology ? + <1-65535> AS Number + A.B.C.D IP prefix <network>/<length>, e.g., 192.168.0.0/16 + A.B.C.D Network to display information about + active Show only active entries + all-links Show all links in topology table + detail-links Show all links in topology table + pending Show only entries pending transmission + summary Show a summary of the topology table + zero-successors Show only zero successor entries + | Output modifiers + <cr> +```