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There are three things that need to be considered based on your network requirement as stated below 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 final destination based on routing table. A tunnel is created from one end of the network to the other. Generic Routing Encapsulation, GRE, is an IP encapsulation protocol that is used to transport packets over a network. In computer networks, we often need this mechanism in order to provide a level of tunneling or security when transporting packets from one place to another or through an otherwise public network is required. de-encapsulation where the data object or packet is taken back to its original form as it was initially before encapsulation. Well, so how do we read it then, for that occurs the counter part of encapsulation i.e. What is encapsulation? The general internal representation of an object or data or packet is hidden from the outside world. Understanding GRE – Generic Routing Encapsulation In this blog, we will understand what is encapsulation, the CoS of GRE and firewall filters in GRE. GRE follows this protocol and sends packets from one network to another through a GRE tunnel. To transport packets in a private and secure path over a public network, we use the process of encapsulating packets inside an IP encapsulation protocol. Last updated at Wed, 13:44:55 GMT Synopsis

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