![An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support](https://www.downloads.netgear.com/files/answer_media/DITAToo/Knowledge%20Base%20Articles%20%28New%29/CHP%20Products/Routers/RAX20_loopback_test_front.png)
An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support
![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)
Basic Settings on a Router (1.1.3) > Cisco Networking Academy's Introduction to Routing Concepts | Cisco Press
![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
![An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support](https://www.downloads.netgear.com/files/answer_media/DITAToo/Knowledge%20Base%20Articles%20%28New%29/CHP%20Products/Routers/RAX20_loopback_test.png)