# DMVPN Questions

**URL:** <https://legacy-community.ine.com/t/dmvpn-questions/3540>\
**Category:** CCNP Enterprise\
**Tags:** networking, ine, lab\
**Created:** [March 21, 2023, 10:02pm UTC](https://legacy-community.ine.com/t/dmvpn-questions/3540 "2023-03-21T22:02:27Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![major133-ac9365513dd](https://avatars.discourse-cdn.com/v4/letter/m/f4b2a3/32.png) [@major133-ac9365513dd](https://legacy-community.ine.com/u/major133-ac9365513dd)\
**Post date:** [March 21, 2023, 10:02pm UTC](https://legacy-community.ine.com/t/dmvpn-questions/3540/1 "2023-03-21T22:02:27Z")

</div>

Hi @Network_Eric

- R1(config-if)#ip nhrp map{overlay} nbma {underlay}
- R1(config-if)# ip nhrp nhs {overlay}
- R1(config-if)#ip nhrp nhs {overlay}{underlay}
- R1(config-if)#ip nhrp nhs {overlay} nbma {underlay}  
what is the difference between these commands ?

R1(config-if)#ip nhrp nhs {overlay} nbma {underlay}  
R1(config-if)#ip nhrp nhs {overlay} nbma {underlay} multicast  
what is the difference between both commands ?

R1 is spoke .  
R4 is HUB