VPN: DEEP Dive into IPSec, configurations / functions, the VPN fails, but is troubleshot with debugs / verification commands to fix the issue explained!

This is more a Part 2 of 3 in the series of 1 being building a GRE tunnel which we now have, 2 building an IPSec Tunnel which we will have shortly, and 3 placing the GRE traffic into the IPSec VPN for transmission - As IPSec only sends Unicast but GRE takes any type … Continue reading VPN: DEEP Dive into IPSec, configurations / functions, the VPN fails, but is troubleshot with debugs / verification commands to fix the issue explained!