Cisco CCNA Packet Tracer Ultimate labs: EIGRP troubleshooting lab 3: Answers: EIGRP K-value mismatch

Packet Tracer file (PT Version 7.1): https://bit.ly/2JiCvSj Get the Packet Tracer course for only $10 by clicking here: https://goo.gl/vikgKN Get my ICND1 and ICND2 courses for $10 here: https://goo.gl/XR1xm9 (you will get ICND2 as a free bonus when you buy the ICND1 course).

For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more.

#CCNA #PacketTracer #CCENT

What is a "EIGRP K-value mismatch"?

EIGRP K values are the metrics that EIGRP uses to calculate routes. Mismatched K values can prevent neighbor relationships from being established and can negatively impact network convergence.

The following error message is displayed on the console of a Device because the K values are mismatched:

%DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 10.1.1.1 (Ethernet0/0) is down: K-value mismatch

The following are two scenarios where the above error message can be displayed:

Two devices are connected on the same link and configured to establish a neighbor relationship. However, each device is configured with different K values. One of two peers has transmitted a “peer-termination” message (a message that is broadcast when an EIGRP routing process is shut down), and the receiving device does not support this message. The receiving device will interpret this message as a K-value mismatch.

Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced distance-vector routing protocol that is used on a computer network for automating routing decisions and configuration. The protocol was designed by Cisco Systems as a proprietary protocol, available only on Cisco routers. Partial functionality of EIGRP was converted to an open standard in 2013 and was published with informational status as RFC 7868 in 2016.

EIGRP is used on a router to share routes with other routers within the same autonomous system. Unlike other well known routing protocols, such as RIP, EIGRP only sends incremental updates, reducing the workload on the router and the amount of data that needs to be transmitted.

EIGRP replaced the Interior Gateway Routing Protocol (IGRP) in 1993. One of the major reasons for this was the change to classless IPv4 addresses in the Internet Protocol, which IGRP could not support.

Almost all routers contain a routing table that contains rules by which traffic is forwarded in a network. If the router does not contain a valid path to the destination, the traffic is discarded. EIGRP is a dynamic routing protocol by which routers automatically share route information. This eases the workload on a network administrator who does not have to configure changes to the routing table manually.

In addition to the routing table, EIGRP uses the following tables to store information:

Neighbor T ... https://www.youtube.com/watch?v=6FFFiA_DZ2A