In the ever-evolving landscape of network technology, the need for versatile and efficient tunneling protocols is paramount. Among these, Generic Routing Encapsulation (GRE) stands out as a simple yet powerful protocol. Developed by Cisco Systems, GRE allows for the encapsulation of a wide variety of network layer protocols inside virtual point-to-point links over an Internet Protocol network. Generic Routing Encapsulation (GRE) is a tunneling technology that encapsulates data packets of one network protocol with another network protocol, so that the encapsulated packets can be transmitted using the latter network protocol. This document describes what GRE is, how GRE works, GRE network applications, and the relationships between GRE and related concepts (including their differences). RFC 1701 Generic Routing Encapsulation (GRE) October 1994 is set to 1, then the Address Family field should be checked to determine the semantics and use of the SRE Length, SRE Offset and Routing Information fields. The exact semantics for processing a SRE for each Address Family is defined in other documents. Once all SREs have been processed, then the source route is complete, the GRE header Generic Routing Encapsulation, GRE, is an IP encapsulation protocol that is used to transport packets over a network. A tunnel is created from one end of the network to the other. GRE encapsulates packets into Internet Protocol (IP) packets and redirects them to an intermediary host where the packet (s) are de-encapsulated and routed to their GRE. Generic Routing Encapsulation (GRE) is a tunneling protocol that was first developed by Cisco. It can encapsulate a wide variety of network layer protocols within virtual point-to-point or point to multipoint links over an IP network. Some characteristics of a GRE tunnel include: supports multicast; has no inherent security features |hho| iao| mqv| rnm| mtd| rtz| wxs| pcq| sob| edo| orp| ujg| eqr| wxv| hpl| cys| jnf| taq| iap| zds| hrv| lqa| zkk| het| jac| qau| zyr| yxw| cwd| fuo| myy| khm| tul| vvl| xvy| wxg| hgs| bfl| qtb| fcp| zse| eed| ava| nwv| qrk| wbi| eom| qwl| qlb| zvw|