10-30-2024 03:04 AM
Hi
I am learning about advanced EIGRP and have made the following notes for advanced features that can be implemented , would somebody kindly pass comment on if I have missed anything or if theres any other advanced features I can configure as part of best practise.
Thanks in advance
To implement EIGRP (Enhanced Interior Gateway Routing Protocol) advanced features for optimum performance, you can follow these best practices:
bash
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interface GigabitEthernet0/1
ip authentication mode eigrp [AS number] md5
ip authentication key-chain eigrp [AS number] [key-chain-name]
bash
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interface GigabitEthernet0/0
ip summary-address eigrp [AS number] [summary-address] [subnet-mask]
bash
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router eigrp [AS number]
maximum-paths [number]
bash
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router eigrp [AS number]
timer hello [seconds]
timer hold [seconds]
bash
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router eigrp [AS number]
distribute-list [access-list] in|out
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router eigrp [AS number]
eigrp stub
By implementing these advanced features and best practices, you can significantly enhance the performance and reliability of your EIGRP deployment.
10-30-2024 03:18 AM
Hello jk865,
Eigrp also supports Unequal path load-balancing (4 Unequal paths default) using Variance command
Eigrp supports 100 hops by default, you can increase up to 255 using metric maximum-hops command
Lastly, main imprtant this Eigrp named configuration ( router eigrp <name>), what commands you mentioned that's for eigrp classic configuration. Named mode configuration is more advanced.
Best regards
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10-30-2024 03:24 AM
Many thanks
10-30-2024 05:27 AM
Hi,
There's some important differences between what you can do I theory and what you'll end up doing in production networks:
Best,
Cristian.
10-30-2024 05:31 AM
Hello,
You have some great starting notes and are well on your way to understanding EIGRP. Among other tips I'd like to add a few of my own.
Under your timers you may have the syntax reversed. I believe you would want the stable links to have lower timers and unstable links to have higher timers. However most organizations leave the timers as is since its fine for general operations.
STUB routing - In your notes you put that EIGRP stub routing is configured to reduce unnecessary EIGRP traffic and improve performance. I would make sure you understand how it does this. What is the default setting when its enabled and what are some other options you can configure?
Route manipulation - you can also use offset lists for adding metric to a link although not sure how much this is used in production.
EIGRP named mode - named mode has many other features you can use. One such improvement is the authentication. You can still use MD5 but you can also configure HMAC-SHA authentication.
Hope this helps with your studies and understanding and good luck.
-David
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