鸿鹄论坛_工大瑞普ccnp实验完全手册-注释版

鸿鹄论坛_工大瑞普ccnp实验完全手册-注释版内容摘要：

ms 工大瑞普 CCNP 实验手 册 169。 2020 , Inc. All rights reserved. 10 R2 路由器 R2 作为企业的出口路由器，由于其配置了静态路由，因此其可以直接访问外部，但是内部的 R1和 R5路由器由于缺少路由，因此无法访问外网。 下面显示了 R1 路由器的路由表和其向外部发起 ping 的访问结果： R1show ip route Gateway of last resort is not set , 2 subs D [90/284160] via , 00:06:40, FastEther0/1 C is directly connected, FastEther0/1 R1 R1ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R1 R5show ip route Gateway of last resort is not set , 2 subs C is directly connected, Ether1/1 D [90/307200] via , 00:12:15, Ether1/1 R5 R5ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R5 为了解决问题，只需要在 R1和 R5 路由器上配置一条指向 R2路由器的静态默认路由即可，如下所示： R1(config)ip route 工大瑞普 CCNP 实验手 册 169。 2020 , Inc. All rights reserved. 11 R1(config)exit R1show ip route Gateway of last resort is to work , 2 subs D [90/284160] via , 00:09:19, FastEther0/1 C is directly connected, FastEther0/1 S* [1/0] via R1 R1ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), roundtrip min/avg/max = 48/71/92 ms R1 R5(config)ip route R5(config)exit R5 R5show ip route Gateway of last resort is to work , 2 subs C is directly connected, Ether1/1 D [90/307200] via , 00:13:57, Ether1/1 S* [1/0] via R5 R5ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), roundtrip min/avg/max = 32/53/64 ms R5 根据上面配置，其实只需要给内部路由器配置默认路由指向出口路由器 R2 即可解决外部网络无法访问的问题。 但是 如果内部网络路由器数量较多时，采用手工大瑞普 CCNP 实验手 册 169。 2020 , Inc. All rights reserved. 12 工配置 静态默认路由 ，则会显得非常繁锁。 因此，建议采用默认网络命令，让R2路由器自动的向内部通告默认路由。 将 R1 和 R5 的静态默认路由删除后，查看 R1 和 R5的路由表。 如下所示： R1(config)no ip route R1(config)exit R1 R1show ip route Gateway of last resort is not set , 2 subs D [90/284160] via , 00:19:02, FastEther0/1 C is directly connected, FastEther0/1 R1 R1ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R1 R5(config)no ip route R5(config)exit R5 R5show ip route Gateway of last resort is not set , 2 subs C is directly connected, Ether1/1 D [90/307200] via , 00:19:42, Ether1/1 R5 R5ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: ..... Success rate is 0 percent (0/5) 工大瑞普 CCNP 实验手 册 169。 2020 , Inc. All rights reserved. 13 R5 在 R2 上配置默认网络，配置如下所示： R2(config)router eigrp 50 R2(configrouter)work R2(configrouter)exit R2(config)ip defaultwork R2(config)exit R2show ip route Gateway of last resort is to work * , 2 subs, 2 masks D* , 00:00:53, Null0 C , Ether1/1 , 3 subs, 2 masks C , Ether1/2 D , 00:22:22, Null0 C , Ether1/0 S* [1/0] via R2 1查看 R1和 R5 路由器的路由表，并且尝试访问外部网络： R1show ip route Gateway of last resort is to work D* [90/284160] via , 00:02:03, FastEther0/1 , 2 subs D [90/284160] via , 00:02:04, FastEther0/1 C is directly connected, FastEther0/1 R1 R1ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), roundtrip min/avg/max = 48/105/188 ms R1 R5show ip route 工大瑞普 CCNP 实验手 册 169。 2020 , Inc. All rights reserved. 14 Gateway of last resort is to work D* [90/307200] via , 00:04:15, Ether1/1 , 2 subs C is directly connected, Ether1/1 D [90/307200] via , 00:04:19, Ether1/1 R5 R5ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), roundtrip min/avg/max = 76/87/96 ms R5 1使用 ip defaultwork 命令可以有效减少内部网络配置任务。 不过需要注意的是 ip defaultwork 其指出默认网络，建议采用主类网络。 如果使用无类网络，则可能会出现无法解释的问题。 3实验完成。 工大瑞普 Cisco课程开发小组 工大瑞普 CCNP 实验手 册 169。 2020 , Inc. All rights reserved. 15 CCNP Lab Manual Lab 3. Manually Summarizing EIGRP Routes 实验目的： 理解 EIGRP 的自动汇总的缺点。 掌握 EIGRP 的手工自动总结的配置方法。 实验拓扑图： 工大瑞普 CCNP 实验手 册 169。 2020 , Inc. All rights reserved. 16 实验步骤及要求： 配置各台路由器的 IP 地址，并且使用 Ping 命令确认各路由器的直连口的互通性。 配置各台路由器的 EIGRP 协议 ,并且不关闭自动总结。 在 R2 上使用 ping 测试网络路由，会发现 R2 路由器无法 ping 通路由器 R4所连接的。 如下所示： R2ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), roundtrip min/avg/max = 1/46/92 ms R2 R2ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: Success rate is 0 percent (0/5) R2 R2ping Type escape sequence to abort. Sending 5, 100byte ICMP Echos to , timeout is 2 seconds: Success rate is 0 percent (0/5) R2 查看 R2 的路由表： R2show ip route Gateway of last resort is not set , 3 subs D [90/307200] via , 00:06:25, Ether1/1 C is directly connected, Ether1/1 C is directly connected, Ether1/0 D [90/409600] via , 00:06:09, Ether1/0 D [90/409600] via , 00:06:25, Ether1/1 工大瑞普 CCNP 实验手 册 169。 2020 , Inc. All rights reserved. 17 D [90/409600] via , 00:06:25, Ether1/1 D [90/409600] via , 00:06:25, Ether1/1 D [90/409600] via , 00:06:25, Ether1/1 R2 查看 R2 路由器的拓扑数据库：。