Input on my recent topology #1537
Replies: 2 comments 7 replies
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Welcome! So nice to hear someone found netlab useful for certification preparation
I'm impressed. Pretty large one ;) Can I post a link to your GitHub directory?
You did a really good job. I love how you used groups to simplify the setup. Also, using "name" node attribute is creative (it does get overwritten, but it's a nice documentation touch). The only thing that I found a bit odd was using "0.0.0.0" as router ID. I'm guessing it works, but I don't think I've ever seen anyone doing it that way. |
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Yeah you can absolutely post a link :) The main reason I used 0.0.0.0 was to keep the router IDs similar to the area #, not sure if itd work in a real situation haha |
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I found https://community.cisco.com/t5/other-network-architecture-subjects/ospf-router-id-0-0-0-0/td-p/275142 from 2004 The router IDs should get auto-generated, there is no need to set them manually (but you can if you like) Similar for some of the other attributes you set - it might be interesting to test which configurations can be removed while still ending up with a working system |
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Yeah, I know I can leave out the 0.0.0.0 area specifications because they are cisco default and most the link ospf.area specifications since I set a default value for them in nodes, however, for me to keep track I just redundantly added them. Im legally blind so following trails of not explicitly stated paths causes a lot of unneeded eye strain. Also hence the node naming; the _a# specifying the ospf area so I dont have to draw a map out hahah |
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You are doing very well. Now that you done some topologies, and big ones at that, how do you find working with netlab ?
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Honestly, I started out with cisco packet tracer and gns3. I hated them haha. I saw someone mention netlab in a reddit thread, so I checked it out. Lets just say, I bought a new laptop that had windows 11 pro, nuked that for ubuntu, all because I wanted to use netlab over everything else. Netlab literally just works for my brain, cant explain it. (Theres an issue using multipass on windows 11 pro, because hyper-v roadblocks nested virtualization) |
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It’s the data model approach, it forms a solid conceptual model in your brain and then the rest logically follows from that I would encourage you to explore other platforms beyond IOS - working multi-vendor is like speaking different languages. It helps you appreciate the good parts and the limitations/trade-offs for different design choices and quirks |
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Great advice, I had started exploring SR linux and FRR as well. I was also planning on doing Juniper as well once I got the basic networking stuff down. |
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Im glad netlab clicked with you. It's an awesome program, with a lot of utility. In case you didn't know this place already, here is a link towards Junpier's Day One library While they do use Juniper gear to illustrate the concepts, that library contains lot of general networking gems and concepts, very well explained. And it's all free.
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Im a CCNA student and I tried my hand at a multiarea OSPF with redundancy. If you have a minute to look and give me feedback, I would greatly appreciate it! I am about a month into learning networking.
https://github.com/Astrotokii/NetlabLabs/tree/6352c4a8cf1f813a353b448416052fc3a8af5ea8/OSPF_M_B_P2P
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