Definitions for "Generic Routing Encapsulation"
An optional form of tunneling that can be supported by home agents, foreign agents, and mobile nodes. GRE enables a packet of any network-layer protocol to be encapsulated within a delivery packet of any other (or the same) network-layer protocol.
A generic encapsulation procedure, defined in RFC 1701, that was developed prior to the development of Mobile IP.
Tunneling protocol developed by Cisco that can encapsulate a wide variety of protocol packet types inside IP tunnels, creating a virtual point-to-point link to Cisco routers at remote points over an IP internetwork.