EI CCIE真题 考点系列知识2-命名的EIGRP配置方案-乾颐堂安德（周亚军）

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配置命名的EIGRP

配置命名的EIGRP可在ios 15.0(1)M、12.2(33)SRE、12.2(33)XNE、Cisco IOS XE Release 2.5或者更高的版本进行，思科最新EI CCIE考试版本为IOSv

可在如下图7-3实验拓扑配置：

图7.3　命名的eigrp

实验步骤：

请自行完成IP地址等基本配置

配置命名的EIGRP：

R1(config)#router eigrp ?

<1-65535>  Autonomous System

  WORD       EIGRP Virtual-Instance Name     ---命名模式

R1(config)#router eigrp cisco

R1(config-router)#address-family ipv4 autonomous-system 90---此处配置AS号码

R1(config-router-af)#network 12.1.1.1 0.0.0.0在地址族下（IPv4地址族）进行通告

R1(config-router-af)#net 11.1.1.1 0.0.0.0

R2(config)#router eigrp cisco

R2(config-router)#address-family ipv4 autonomous-system 90

R2(config-router-af)#net 12.1.1.2 0.0.0.0

R2(config-router-af)#net 22.1.1.1 0.0.0.0

验证命令：

R1#show ip eigrp neighbors

EIGRP-IPv4 VR(cisco) Address-Family Neighbors for AS(90)

H   Address                       Interface        Hold  Uptime   SRTT   RTO  Q   Seq

                                           (sec)          (ms)        Cnt  Num

0   12.1.1.2                   Et0/1            11  00:00:06    8   100   0    4

R2#show ip eigrp neighbors

EIGRP-IPv4 VR(cisco) Address-Family Neighbors for AS(90)

H   Address                     Interface        Hold Uptime   SRTT  RTO  Q  Seq

                                           (sec)          (ms)       Cnt Num

0   12.1.1.1                      Et0/1            13  00:00:03   3   100   0   6

关闭EIGRP路由自动汇总

R1(config)#router eigrp cisco

R1(config-router)#address-family ipv4 autonomous-system 90

R1(config-router-af)#topology base ---在地址族下的拓扑库下进行配置

R1(config-router-af-topology)#no auto-summary

R2(config)#router eigrp cisco

R2(config-router)#address-family ipv4 autonomous-system 90

R2(config-router-af)#topology base

R2(config-router-af-topology)#no auto-summary

验证命令：

R1#show ip route eigrp

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

       E1 - OSPF external type 1, E2 - OSPF external type 2

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

       + - replicated route, % - next hop override

Gateway of last resort is not set

      22.0.0.0/24 is subnetted, 1 subnets

D        22.1.1.0 [90/1024640] via 12.1.1.2, 00:01:08, Ethernet0/1

R2#show ip route eigrp

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

       E1 - OSPF external type 1, E2 - OSPF external type 2

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

       + - replicated route, % - next hop override

Gateway of last resort is not set

      11.0.0.0/24 is subnetted, 1 subnets

D        11.1.1.0 [90/1024640] via 12.1.1.1, 00:01:33, Ethernet0/1

查看拓扑表：

R2#show ip eigrp topology 11.1.1.0/24

EIGRP-IPv4 VR(cisco) Topology Entry for AS(90)/ID(22.1.1.1) for 11.1.1.0/24

  State is Passive, Query origin flag is 1, 1 Successor(s), FD is 131153920, RIB is 1024640---可行后继和

                                                                                                                                        装载到路由表的metric分离

  Descriptor Blocks:

  12.1.1.1 (Ethernet0/1), from 12.1.1.1, Send flag is 0x0

      Composite metric is (131153920/163840), route is Internal

      Vector metric:

        Minimum bandwidth is 10000 Kbit

        Total delay is 1001250000 picoseconds  ---此处的delay采用兆分之一秒，而不是之前的

              microsecond

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

        Originating router is 11.1.1.1

R2#show eigrp address-family ipv4 topology 11.1.1.0/24 ---也可以这样

EIGRP-IPv4 VR(cisco) Topology Entry for AS(90)/ID(22.1.1.1) for 11.1.1.0/24

  State is Passive, Query origin flag is 1, 1 Successor(s), FD is 131153920, RIB is 1024640

  Descriptor Blocks:

  12.1.1.1 (Ethernet0/1), from 12.1.1.1, Send flag is 0x0

      Composite metric is (131153920/163840), route is Internal

      Vector metric:

        Minimum bandwidth is 10000 Kbit

        Total delay is 1001250000 picoseconds

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

        Originating router is 11.1.1.1

EIGRP使用许多常量定义度量值的转换和计算可参考表8-1。

表8-1  新的K值计算

例如：

Metric=131153920

RIB=131153920/128=1024640

本实验配置完毕，欢迎关注乾颐堂最新EI CCIE版本考试情况以及后续是知识点

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