How do GRE tunnels work?

Related questions

1. What is Cisco Nhrp?
2. Does Dmvpn support multicast?
3. What is the advantage of GRE tunnel?
4. What is Nhrp in networking?
5. What is Cisco GRE?
6. Is GRE Cisco proprietary?
7. Is Dmvpn Cisco proprietary?
8. What is the NHRP role in Dmvpn?
9. Is GRE secure?
10. What is GRE in networking?

Tags

1. #payloads
2. #delivered
3. #needs
4. #network
5. #through
6. #networks
7. #tunnels
8. #tunnel
9. #packet
10. #packets
11. #works
12. #routing
13. #encapsulating
14. #destination
15. #payload
16. #inside
17. #endpoints
18. #outer
19. #discontinuous
20. #encapsulated
21. #connect
22. #inner
23. #intervening