# VRF Lite Configuration on Cisco IOS **URL:** https://forum.networklessons.com/t/vrf-lite-configuration-on-cisco-ios/1166 **Category:** Lessons Discussion **Created:** [December 27, 2016, 5:48pm UTC](https://forum.networklessons.com/t/vrf-lite-configuration-on-cisco-ios/1166 "2016-12-27T17:48:01Z") **Posts on this page:** 1 **Showing post:** 109
### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis) #### Post date: [August 27, 2024, 8:31am UTC](https://forum.networklessons.com/t/vrf-lite-configuration-on-cisco-ios/1166/109 "2024-08-27T08:31:15Z")
Hello Sathish The Down Bit or the DN bit can be found within the Options section of an LSA found within the payload of an OSPF message. Take a look at this screenshot of a packet capture to see where you can find it: ![image](https://forum.networklessons.com/uploads/default/original/2X/2/2459900315f930693df073e56acde542cab080db.png) The DN bit is found in all LSAs as well as in DB description messages, and is used for much the same purpose. You can find out more information about it at this post, which also includes links… > [@When and where to use "capability vrf-lite"](https://forum.networklessons.com/t/when-and-where-to-use-capability-vrf-lite/14877/2): > > Hello James The capability vrf-lite command is used to suppress provider edge (PE) checks that are needed to prevent loops when the PE is performing mutual redistribution of packets between the OSPF and BGP protocols. When VRFs are being used on a router that is not a PE, that is, one that is not running BGP like a CE, then the checks can be turned off to allow for correct population of the VRF routing table. Specifically, this command should be enabled: only on the CE router only when you … I hope this has been helpful! Laz --- _[View the full topic](https://forum.networklessons.com/t/vrf-lite-configuration-on-cisco-ios/1166)._