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, 15:26, 17 February 2020
==Introduction==
Generic Routing Encapsulation (GRE) is a tunneling protocol that can encapsulate a wide variety of network layer protocols inside virtual point-to-point links over an Internet Protocol network.
This article provides an extensive configuration example with details on how to create a tunnel connection between two GRE Tunnel instances, one of which is configured on RUTxxx router and the second one on CISCO device.
==Prerequisites==
You will need:
* One RUTxxx router
* One Cisco router
* A PC to configure the routers
* Both routers must have a Public Static or Public Dynamic IP addresses
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