The EIGRP show commands are highly detailed and give a comprehensive understanding of the state of the network. Troubleshooting EIGRP should start with the generic routing commands (show ip route and show ip protocols) before jumping into EIGRP-specific troubleshooting.
The show ip eigrp neighbors Command
The show ip eigrp neigbors command shows the Neighbours Table.
The table below explains the command output above
The show ip eigrp topology Command
The show ip eigrp topology command shows the topology table. This command shows the effect of DUAL. It shows whether the successor or the route is in an active or passive state and if there is a Feasible Successor.
The table below explains the command output above
The Show ip eigrp traffic Command
The show ip eigrp traffic command shows the EIGRP traffic received and generated by the router.
The table below explains the command output above
Troubleshooting EIGRP
There are many mehtods and tools that help one to troubleshoot a network. One of the most benificial tools would be the endless Cisco Documentation available for free at Cisco.com this would be because you can progress and easily eliminate the obvious in a checklist manner.
One of the most frequent troubleshooting techniques would be the use of debug commands, which provide the ability to see traffic and router processes in real time.
That being said debug is a resource hog. If you want to crash a router try debug all. For this reason use only specific feature options and for finite periods of time. When you are done, no debug all or undebug all which will disable debugging
Software Study Resources:
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| The Command Memorizer was originally developed by a CCIE Candidate (David Bombal) for his own use and is now available to anyone who wants to use it.Command Memorizer helped him pass the CCIE Lab on the first attempt, and although I am not a CCIE candidate “officially” I have fiddling with it and finding it useful to test my command line retention and overall progress towards CCIE readiness as I do my current CCNP.The proof will be in the pudding as the Command Memorizer boasts 1000s of commands and hundreds of scenarios to test command line knowledge and retention. It has a section for EIGRP and I also like knowing where I am on my long road to Cisco.Like most study aids / study tools this tool / aid has a specific focus. The Command Memorizer only works when used in conjunction with theoretical backing because you need to know what a command does and how it relates to the technology area. IOW You need to make the connection before you can start drilling actual commands repetitively to get them to start flowing and become second nature.
For a disclosure statement on my relationship with Configure Terminal. |
Cisco Press Resources:
Notes and Notices:
This is a part of my personal BSCI notes and research to assist myself in learning and understanding the concepts and theory for the BSCI exam. I learn by making notes reading and writing things down and wish to file them where I can’t lose them. These notes are not to be seen, judged or mistaken for replacements to Cisco recognized and authorized training which I personally support and attend and suggest you undertake if you are going for the BSCI Certification.