Orhan Ergun 1 Comment

GRE Tunnels – Generic Routing Encapsulation – Use Cases

GRE Tunnels 

GRE tunnels are by far most common tunnelling technology. Very easy to setup, troubleshoot and operate. But in large scale deployment, configuring GRE tunnels become cumbersome, because GRE tunnel is a point to point tunnel.

 

Read more

Orhan Ergun No Comments

DMVPN Point-to-Point GRE and mGRE

DMVPN spokes can use either point-to-point GRE tunnels or multipoint GRE tunnel interface. Recently, I received a question regarding DMVPN.

In fact, the Reader asked me two questions: When is GRE used in network design? When is mGRE used in network design?

Answering the aforementioned questions are the basics that you must know if you are planning to design DMVPN network.

Read more