![What is Loopback interface in Cisco Router and what is use of loopback interface how to configure Loopback interface What is Loopback interface in Cisco Router and what is use of loopback interface how to configure Loopback interface](https://1.bp.blogspot.com/-XIpygxE83-8/X9Irut4mU3I/AAAAAAAABwc/mdnhe8TqZ30K9pLVZYWuUYev5DwMJnfKgCLcBGAsYHQ/s384/a1.jpg)
What is Loopback interface in Cisco Router and what is use of loopback interface how to configure Loopback interface
![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)
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 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?w=614&h=257)
How to configure loopback interfaces on cisco router | Learn Linux CCNA CEH IPv6 Cyber-Security Online
David Bombal on 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 #
![cisco - Whats's the function of a loopback interface in routing protocols? - Network Engineering Stack Exchange cisco - Whats's the function of a loopback interface in routing protocols? - Network Engineering Stack Exchange](https://i.stack.imgur.com/TLEFV.png)
cisco - Whats's the function of a loopback interface in routing protocols? - Network Engineering Stack Exchange
![Basic Settings on a Router (1.1.3) > Cisco Networking Academy's Introduction to Routing Concepts | Cisco Press Basic Settings on a Router (1.1.3) > Cisco Networking Academy's Introduction to Routing Concepts | Cisco Press](https://www.ciscopress.com/content/images/chap1_9781587133237/elementLinks/01fig15_alt.jpg)