Which two NHRP functions are specific to a DMVPN Phase 3 implementation?
DMVPN Phase 3 uses an NHRP redirect to tell the source spoke that traffic forwarded through the hub has a suboptimal path. The destination spoke then sends an NHRP resolution reply directly to the source spoke, supplying the mapping needed for the direct spoke-to-spoke shortcut. Registration messages support spoke-to-hub registration, and resolution requests are also used in Phase 2.
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