Part 1 in a four part series, this post will look at the configuration of DMVPN Phase 1 and the routing implications using OSPF. Although Phase 1 today is considered obsolete, it is still worth reviewing.
Prior to delving into the specifics of DMVPN Phase 1 configuration, let’s start with a underlay network – NBMA (Non-Broadcast Multi-access Network), the underlay can either be the public internet or a MPLS network.
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