CCNA Notes
CompTIA LX103
Cisco ICND1
Cisco ICND2
- Topics
- To
- Be
- Added
Various
Labs
CompTIA LX103
Cisco ICND1
Cisco ICND2
Various
Labs
This is an old revision of the document!
GRE tunnels, but dynamic, yanno?
Going to skip the explanation until I hit this part in the books, but until then - a refresher on quick Phase 2 configuration from a Hub/spoke topology with one HUB. And excuse the terrible diagram, I'll build a better one one I'm not pressed for time!
REFER TO THE ABOVE DIAGRAM AND NOTE THE CONFIGS BELOW!
interface Tunnel10 ip address 192.168.1.1 255.255.255.0 no ip redirects ip nhrp network-id 1 tunnel source Loopback0 tunnel mode gre multipoint end
interface Tunnel10 ip address 192.168.1.3 255.255.255.0 <-- Set IP for Tun INT no ip redirects ip nhrp map 192.168.1.1 1.1.1.1 <-- Map Phys address for NHS aka How do I get to 192.168.1.1? ip nhrp network-id 3 <-- Useful for multi-hub environments. Details later... ip nhrp nhs 192.168.1.1 <-- Specify NHS for tunnel traffic to traverse. tunnel source Loopback0 tunnel mode gre multipoint <-- Enable Dynamic Multipoint VPN end