Key components include:
● Multipoint GRE (mGRE) tunnel interface: Allows a single GRE interface to support multiple IPsec tunnels, simplifying the size and complexity of the configuration.
● Dynamic discovery of IPsec tunnel endpoints and crypto profiles: Eliminates the need to configure static crypto maps defining every pair of IPsec peers, further simplifying the configuration.
● NHRP: Allows spokes to be deployed with dynamically assigned public IP addresses (i.e., behind an ISP’s router). The hub maintains an NHRP database of the public interface addresses of the each spoke. Each spoke registers its real address when it boots; when it needs to build direct tunnels with other spokes, it queries the NHRP database for real addresses of the destination spokes.
https://www.cisco.com/c/en/us/products/collateral/security/dynamic-multipoint-vpn-dmvpn/data_sheet_c78-468520.html
Dynamic Multipoint Virtual Private Network (DMVPN) leverages two protocols to build dynamic VPNs to multiple destinations:
mGRE (Multipoint Generic Routing Encapsulation): mGRE is used to create a multipoint tunnel between multiple remote sites. It provides the ability to send multicast and broadcast traffic between sites without the need for a separate tunnel for each destination.
NHRP (Next Hop Resolution Protocol): NHRP is used for the dynamic discovery of the next-hop tunnel endpoint (NBMA address) in a multipoint GRE (mGRE) environment. It helps in mapping dynamic spoke addresses to the hub's public IP address, allowing for efficient spoke-to-spoke communication without requiring a full mesh of tunnels.
Therefore, the correct answer is mGRE and NHRP.
This section is not available anymore. Please use the main Exam Page.300-730 Exam Questions
Log in to ExamTopics
Sign in:
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
pfrank
8 months, 4 weeks agochekoe
9 months, 1 week agokylesam2017
10 months, 2 weeks agogondohwe
12 months agogondohwe
12 months agoJKPippers
1 year agoAnonymous983475
1 year, 5 months agompls_link
1 year, 7 months agoNet4dd
1 year, 8 months agored_sparrow_Gr
1 year, 9 months ago