David Bombal no Twitter: "Paul tries to configure a loopback interface on a Cisco router with a loopback address. The router, however, displays the following error. Why is this configuration invalid? #CCNA #
![NETWORK LOOPS AND LOOP AVOIDANCE. Do you know what a network loop is… | by Techspecialist Academy | Medium NETWORK LOOPS AND LOOP AVOIDANCE. Do you know what a network loop is… | by Techspecialist Academy | Medium](https://miro.medium.com/max/614/1*Iv636CnDWycdqs_cAFfRDA.png)
NETWORK LOOPS AND LOOP AVOIDANCE. Do you know what a network loop is… | by Techspecialist Academy | Medium
![How to configure loopback interfaces on cisco router | Learn Linux CCNA CEH IPv6 Cyber-Security Online How to configure loopback interfaces on cisco router | Learn Linux CCNA CEH IPv6 Cyber-Security Online](https://linuxtiwary.files.wordpress.com/2016/10/loopback-interfaces-tutorial.png)