# OSPF Virtual Link Authentication **URL:** https://forum.networklessons.com/t/ospf-virtual-link-authentication/2657 **Category:** Lessons Discussion **Created:** [January 4, 2018, 11:14am UTC](https://forum.networklessons.com/t/ospf-virtual-link-authentication/2657 "2018-01-04T11:14:55Z") **Posts on this page:** 1 **Showing post:** 10
### Author: ![bouazzaoui.nabil](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/b/edb3f5/32.png) [@bouazzaoui.nabil](https://forum.networklessons.com/u/bouazzaoui.nabil) #### Post date: [August 3, 2019, 1:18am UTC](https://forum.networklessons.com/t/ospf-virtual-link-authentication/2657/10 "2019-08-03T01:18:40Z")
Hello, I have noticed virtual link authentication does not impact the connectivity between the area 0 and area 2… For example I have enabled virtual link authentication only on R1 and still i can see all the LSA on R1 and R3… My routing table in both routers is fine… Is there any explanation … Thanks --- _[View the full topic](https://forum.networklessons.com/t/ospf-virtual-link-authentication/2657)._