DMVPN with IPsec Phase 3: Difference between revisions

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 '''DMVPN''' has three phases that route data differently:
-Phase 1: All traffic flows from the spoke to and through the hub.
+Phase 1: All traffic goes from the spoke to and through the hub.
-Phase 2: Start with Phase 1 then allows spoke-to-spoke tunnels based on demand and triggers. Phase 2 has different routing, where packet forwarding is being done using the IP routing table.
+Phase 2: Starts with Phase 1 and after it allows spoke-to-spoke tunnels. Phase 2 has different routing, where packet forwarding is being done using the IP routing table. Spokes reach other spokes networks based on the next-hop tunnel IP address of the other spoke for a particular network.
-Phase 3: Starts with Phase 1 and improves the scalability and has fewer restrictions than Phase 2. Phase 3 allows the summarization of routes from hub to spokes. So again spokes wouldn’t need specific routes to other spokes networks.
+Phase 3: Improves the scalability and has fewer restrictions than Phase 2. Phase 3 allows the summarization of routes from hub to spokes. Spokes don’t even need routes, they can use the default gateway toward the hub router.