# 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:** 4

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### Author: ![rockyxiao](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/rockyxiao/32/872_2.png) [@rockyxiao](https://forum.networklessons.com/u/rockyxiao)
#### Post date: [December 9, 2018, 9:01am UTC](https://forum.networklessons.com/t/ospf-virtual-link-authentication/2657/4 "2018-12-09T09:01:46Z")

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Thanks for your reply.

I will show my config as follows,

- IOS: c3725-adventerprisek9-mz.124-15.T14.image
- GNS3: 2.1.11
- My topology:  
 ![topology](https://cdn-forum.networklessons.com/uploads/default/original/2X/d/d38b442b5f8bfc274748c70eef023fb3178e216b.png) [r1 config.txt](https://cdn-forum.networklessons.com/uploads/default/original/2X/b/b1835757ed2d5a355652f909aebed020084822c2.txt) (1.2 KB)  
[r2 config.txt](https://cdn-forum.networklessons.com/uploads/default/original/2X/f/fb03d8c98f37f5aaeed57f1bdfc05159b962a33a.txt) (1.2 KB)

As you can see, I didn’t config virtual link. But I could

 ![ping%20test](https://cdn-forum.networklessons.com/uploads/default/original/2X/2/26430e35842458f7f6d495a1ea72508b5d59a877.jpeg)

and its routing table is,

 ![routing%20table](https://cdn-forum.networklessons.com/uploads/default/original/2X/1/1d147ba470a388118166562f61b5b62260574187.jpeg)

Look forward to your reply, thanks.

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