Advanced IP Routing
We will discuss more advanced IP routing technologies such as filtering route information to be advertised by routing protocols, adjusting metrics, and redistributing when using multiple routing protocols.
These advanced technologies allow you to create router/layer 3 switch routing tables the way you want them to be. It allows you to control the routes that IP packets are forwarded.
Overview of Cisco Route-map

A route-map is a list that summarizes the targets of a process and the contents of a process.
This section provides an overview of the route-map.
Cisco Route-map Configuration

Learn more about configuring a route-map.
The key to configure a route-map is to be clear about what you are going to use it for.
GRE Tunnel Interface - Virtual Point-to-Point Connection

The GRE (Generic Routing Encapsulation) tunnel interface is a virtual point-to-point connection between two routers that can communicate.
Read moreGRE Tunnel Interface Configuration Example

This is an example of GRE tunnel interface configuration.
We configure the GRE tunnel interface in a simple network diagram and verify it with the show command.