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GRE

Tunnel Interfaces

1. Tunnel Modes A tunnel makes two distant devices appear directly connected over a logical interface. When a packet is sent out on the tunnel interface, it is encapsulated in the “carrier” protocol and sent over a physical interface.The most used carrier protocols are GRE, IP-in-IP and IPv6, and this …

GRE Tunnels

1. Configuring GRE GRE tunnels appear as directly connected logical interfaces to the router even though the traffic that goes into the tunnel will actually be carried over other physical interfaces to the destination. To configure a GRE tunnel you have to set the source and the destination of the …