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d36-EIGRP.md
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d36-EIGRP.md
@ -1651,4 +1651,40 @@ Success rate is 100 percent (5/5), round-trip min/avg/max = 24/27/32 ms
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*图 36.15 -- EIGRP的自动路由汇总*
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参考图36.15中的EIGRP网络,路由器R1与R2运行着EIGRP,使用着自治系统编号150。`10.1.1.0/24`、`10.2.2.0/24`与`10.3.3.3.0/24`子网都是直接连接到路由器R1上的。路由器R1正将这些路由通告给R2。路由器R1与R2是使用了一条在`150.1.1.0/24`子网(该子网是一个与`10.1.1.0/24`、`10.2.2.0/24`及`10.3.3.3.0/24`子网都不相同的主要网络<major network>), 上的背靠背的串行链接,连接起来的。
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参考图36.15中的EIGRP网络,路由器R1与R2运行着EIGRP,使用着自治系统编号150。`10.1.1.0/24`、`10.2.2.0/24`与`10.3.3.3.0/24`子网都是直接连接到路由器R1上的。路由器R1正将这些路由通告给R2。路由器R1与R2是使用了一条在`150.1.1.0/24`子网(该子网是一个与`10.1.1.0/24`、`10.2.2.0/24`及`10.3.3.3.0/24`子网都不相同的主要网络<major network>), 上的背靠背的串行链接,连接起来的。根据连接在这些路由器上的网络,默认EIGRP将执行自动汇总,如下所示:
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- `10.1.1.0/24`、`10.2.2.0/24`与`10.3.3.3.0/24`子网将被汇总到`10.0.0.0/8`
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- `150.1.1.0/24`子网将被汇总到`150.1.0.0/16`
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可以查看`show ip protocols`命令的输出,来对此默认行为进行验证。路由器R1上该命令的输出如下所示:
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```
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R1#show ip protocols
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Routing Protocol is “eigrp 150”
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Outgoing update filter list for all interfaces is not set
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Incoming update filter list for all interfaces is not set
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Default networks flagged in outgoing updates
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Default networks accepted from incoming updates
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EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
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EIGRP maximum hopcount 100
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EIGRP maximum metric variance 1
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Redistributing: eigrp 150
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EIGRP NSF-aware route hold timer is 240s
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Automatic network summarization is in effect
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Automatic address summarization:
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150.1.0.0/16 for Loopback1, Loopback2, Loopback3
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Summarizing with metric 2169856
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10.0.0.0/8 for Serial0/0
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Summarizing with metric 128256
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Maximum path: 4
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Routing for Networks:
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10.1.1.0/24
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10.2.2.0/24
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10.3.3.0/24
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150.1.1.0/24
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Routing Information Sources:
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Gateway Distance Last Update
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(this router) 90 00:03:12
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150.1.1.2 90 00:03:12
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Distance: internal 90 external 170
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```
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