- Written by Brandon Bowling
- Posted on 11月 11, 2019
- Updated on 7月 22, 2025
- 8995 Views
This is an addendum to the “IP in IP decapsulation” document.When GRE decapsulation is configured using decap groups, incoming packets with an outer IP header having IPProto=47 (GRE) and a destination IP that matches the configured value will be decapsulated. This means that the outer IP and GRE headers will be removed from the packet, and all subsequent decisions will be based on the inner IP header.