Shulou(Shulou.com)06/01 Report--

1. Experimental Topology

2. Application of passive interface

Passive interface (passive interface) is generally used for optimization. For example, in our topology, R2 has a loopback lo0:2.2.2.2, so it is not necessary to send EIGRP message to lo0 port. When we enable lo0 passive interface under the EIGRP routing process, R2 will no longer send any EIGRP messages to lo0, but the route of lo0 will still be sent by R2.

3. Basic configuration

R2

Interface Loopback0

Ip address 2.2.2.2 255.255.255.0

Interface Serial0/1

Ip address 23.1.1.2 255.255.255.0

Router eigrp 90

Network 23.1.1.0 0.0.0.255

Network 2.2.2.0 0.0.0.255

No auto-summary

R3

Interface Serial0/1

Ip address 23.1.1.3 255.255.255.0

Router eigrp 90

Network 23.1.1.0 0.0.0.255

No auto-summary

4. Passive interface configuration

First use debug debugging to see how EIGRP messages are sent under normal conditions.

Enable passive interface on R2

Router eigrp 90

Passive-interface Loopback0

As can be seen from the figure, only s0 EIGRP 1 is sending and receiving EIGRP messages at this time, and loopback0 no longer sends and receives any LoopBack0 messages, but R3 can still receive LoopBack0 routes.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.