A municipal library consortium builds DMVPN Phase 3 so after initial hub contact, spoke libraries can build direct tunnels to each other. Which behavior characterizes that Phase 3 shortcut model?
Select an answer to reveal the explanation.
Short Explanation
Phase 3 is the introductions at the library conference: meet at the hub first, then get a direct hallway shortcut to the other spoke. NHRP redirect and shortcut make that hand-off happen. Without them you keep hair-pinning through the hub forever.
Full Explanation
DMVPN Phase 3 uses NHRP redirect and shortcut so spokes that initially reach each other via the hub can dynamically establish direct spoke-to-spoke tunnels. That reduces hub hair-pinning for library east-west traffic. Phase 3 does not forbid redirects, force every spoke to be an NHS, or mandate dual-cloud hubs before shortcuts work. Dual hubs are a resiliency choice orthogonal to the Phase 3 shortcut mechanism.