The problem is that each spoke and hub will have 2 service providers for WAN - primary and backup. I am still wondering which design is better and more stable to implement - using more DMVPN clouds (for the backup service provider network) or creating static IPSEC GRE tunnels in the backup links?
Re: URGENT dual cloud dual hub single tier dmvpn with backup ser
Dynamic Multipoint VPN (DMVPN) combines generic routing encapsulation (GRE) tunnels, IPSecurity (IPSec) encryption, and Next Hop Resolution Protocol (NHRP). It allows for the management of devices with dynamically assigned IP addresses. It also enables direct spoke-to-spoke communication, without the need to go through the hub.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...