Eigrp_topology.png

EIGRP基本配置

R1(config)#router eigrp ?  
  <1-65535>  Autonomous System  
  WORD   EIGRP Virtual-Instance

Autonomous System：AS号
EIGRP Virtual-Instance：命名的EIGRP实例

宣告网段

R1(config)#router eigrp 90
R1(config-router)#network ?
  A.B.C.D  Network number
R1(config-router)#network 12.1.1.1 ?
  A.B.C.D  EIGRP wild card bits
  <cr>

EIGRP wild card bits:通配符掩码（反掩码）-> 表示一个范围

通告网段给其他邻居并在该范围内激活EIGRP

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举例

R1(config-router)#network 12.1.1.1 0.0.0.0  
　　!-- 仅激活12.1.1.1/32，同时通告其所处的网段12.1.1.0/30

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Passive interface

基本配置

R4(config)#router eigrp 90
R4(config-router)#passive-interface default 
*Mar 17 21:21:09.471: %DUAL-5-NBRCHANGE: EIGRP-IPv4 90: Neighbor 34.1.1.3 (Ethernet0/0) is down: interface passive
*Mar 17 21:21:09.473: %DUAL-5-NBRCHANGE: EIGRP-IPv4 90: Neighbor 24.1.1.2 (Serial1/1) is down: interface passive

passive-interface default ：将所有接口都Passive

将非Passive接口移除

R4(config-router)#no passive-interface ethernet 0/0
*Mar 17 21:21:33.733: %DUAL-5-NBRCHANGE: EIGRP-IPv4 90: Neighbor 34.1.1.3 (Ethernet0/0) is up: new adjacency
R4(config-router)#no passive-interface s1/1
*Mar 17 21:21:43.929: %DUAL-5-NBRCHANGE: EIGRP-IPv4 90: Neighbor 24.1.1.2 (Serial1/1) is up: new adjacency

验证

R4#show ip protocols
  Routing for Networks:
    24.1.1.4/32
    24.1.2.0/24
    34.1.1.4/32
    44.1.1.0/24
  Passive Interface(s):
    Loopback0
    Loopback1
  Routing Information Sources:
    Gateway         Distance      Last Update
    24.1.1.2              90      00:00:18
    34.1.1.3              90      00:00:18
  Distance: internal 90 external 170