Routing Notes 04 GRE and DMVPN 2

GRE CONFIGURATION

ROUTER 1

conf t
interface tunnel 0
tunnel source 29.10.10.1
tunnel destination 29.10.10.2
ip address 192.168.1.1 255.255.255.0

ROUTER 2

conf t
interface tunnel 0
tunnel source 29.10.10.2
tunnel destination 29.10.10.1
ip address 192.168.1.2 255.255.255.0

ROUTER 1

router rip
no auto summary
network 192.168.1.0
network 29.0.0.0

ROUTER 2

router rip
no auto summary
network 192.168.1.0
network 29.0.0.0

DIFFERENCE BETWEEN GRE AND DMVPN

GRE - Generic Route Encapsulation
1. Runs on Multicast Traffic
2. VPN, routes are treated private on public connection
3. Ability to encapsulate private ip address to public connection

DMVPN - Next Hop Resolution Protocol