The router eigrp Command

In this article we will discuss The router eigrp Command, will make brief discussion on The router eigrp Command, In last article we discuss about Autonomous System Numbers (AS).

The Cisco IOS includes the processes to enable and configure several different types of dynamic routing protocols.

The router global configuration mode command is used to begin the configuration of any dynamic routing protocol.

When followed by a question mark (?), the router global configuration mode command lists of all the available routing protocols supported by this specific IOS release running on the router.

The following global configuration mode command is used to enter the router configuration mode for EIGRP and begin the configuration of the EIGRP process:

Router(config)# router eigrp autonomous-system

The autonomous-system argument can be assigned to any 16-bit value between the number 1 and 65,535. All routers within the EIGRP routing domain must use the same autonomous system number.

In this example, 1 identifies this particular EIGRP process running on this router. To establish neighbor adjacencies, EIGRP requires all routers in the same routing domain to be configured with the same autonomous system number. That same EIGRP is enabled on all three routers using the same autonomous system number of 1.

The router eigrp autonomous-system command does not start the EIGRP process itself. The router does not start sending updates. Rather, this command only provides access to configure the EIGRP settings.

To completely remove the EIGRP routing process from a device, use the no router eigrp autonomous-system global configuration mode command, which stops the EIGRP process and removes all existing EIGRP router configurations.

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