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d36-EIGRP.md
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d36-EIGRP.md
@ -1039,3 +1039,20 @@ IP-EIGRP (AS 150): Topology entry for 172.16.100.0/24
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Hop count is 1
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```
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在上面的输出中,可以看出经由`Serial0/1`的路径并没有满足可行条件(FC),因为其报告的距离(RD)超过了可行距离(FD)。这就是该路径没有在`show ip eigrp topology`命令的输出中打印出来的原因。而为了判断出那些后继路由、可行后继路由,以及未能满足可行条件的那些路由,就可以使用`show ip eigrp topology all-links`命令,而不是对单个前缀进行查看,从而查看到在EIGRP拓扑表中所有前缀的所有可能的路由。下面对此命令的输出进行了演示:
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```
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R2#show ip eigrp topology all-links
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IP-EIGRP Topology Table for AS(150)/ID(2.2.2.2)
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Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
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r - reply Status, s - sia Status
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P 150.2.2.0/24, 1 successors, FD is 20512000, serno 42
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via Connected, Serial0/1
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via 150.1.1.1 (2195456/2169856), Serial0/0
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P 150.1.1.0/24, 1 successors, FD is 1683456, serno 32
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via Connected, Serial0/0
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via 150.2.2.1 (21024000/2169856), Serial0/1
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P 172.16.100.0/24, 1 successors, FD is 1686016, serno 47
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via 150.1.1.1 (1686016/28160), Serial0/0
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via 150.2.2.1 (2167998207/2147511807), Serial0/1
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```
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