GRE and L2TP are 2 commonly referred Tunnelling protocols and may be confused at times. While GRE is abbreviation for Generic Routing Encapsulation, L2TP stands for Layer 2 Tunnelling Protocol. Neither of these protocols encrypt traffic to provide protection for the data being tunnelled. Furthermore, If we want to protect the traffic, then IPsec needs to be run over L2TP or GRE. While GRE ip tunnel is used to carry “other” type of traffic, L2TP is used for multiplexing of multiple PPP sessions between two IP endpoints. L2TP was derived from Microsoft’s Point-to-Point Tunneling Protocol (PPTP) and Cisco’s Layer 2 Forwarding (L2F) technology
Below table details on differences between GRE and L2TP –
ABOUT THE AUTHOR
I am here to share my knowledge and experience in the field of networking with the goal being – “The more you share, the more you learn.”
I am a biotechnologist by qualification and a Network Enthusiast by interest. I developed interest in networking being in the company of a passionate Network Professional, my husband.
I am a strong believer of the fact that “learning is a constant process of discovering yourself.”
– Rashmi Bhardwaj (Author/Editor)
