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<br>
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CRXN stands for **C**ommunity **R**un e**X**pansive **N**etwork. It's a computer network run by the _community for the community_.
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We are a dual-stack IP-based network supporting both IPv4 and IPv6. We are focused on having a network that is accessible to all,
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reliable in terms of having redundant links and diverse. The first part means that we are welcome to anyone who wants to join, the
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second part means that we focus on having a lot of links between adjacent routers such that if one is to fail there exists a fallback
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(in the case where the route is only available through said router - if there are more routers then this is mitigated). We also strive
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to have diverse links - this means linking over the Internet whether it be clearnet or via an overlay network such as Yggdrasil or CJDNS
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or in the best case creating physical links.
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CRXN
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======
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CRXN stands for **C**ommunity **R**un e**X**pansive **N**etwork. It's a computer network _run by the community for the community_.
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We provide an IPv6 (that's the freshest Internet Protocol out there to date) and on CRXN anything that can speak IPv6
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will be able to function correctly - a network without borders! We are focused with having a network that really focuses
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on the "end-to-end" principal of IP - that is to say that if you want to run something and make it available to other then
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you won't have to worry about NAT-traversal, port fowarding, lack of raw IP support and all the other non-sense that IPv4
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created (due to lack of addresses). Compared to the clearnet (normal Internet) there isn't much fuss involved around getting
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a network ID assigned to you and so forth, we truly are for the community and all our members take some of their own time
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to work on their network and the greater CRXN inter-network as a whole.
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It's a great place to test out new protocols, networking projects, play games, exchange ideas and learn about networking,
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routing and network sub-systems themselves. You also get to learn how CRXN is put toghether which is a great way to learn
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networking with those that run networks already themselves.
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The network has a few goals that we always want to maintain as to not lose our allure:
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1. Be a network for learning
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* We don't want to shun people away from using some new
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routing protocol as it might be cool and interesting to
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learn
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2. Be reliable
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* Of course when learning people should also make sure
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their routers don't just accept any route without making
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sure its valid - hence network operators should make sure
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their networks operate even when some are causing mayhem
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(malicious or learning by trial and error)
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* Also shouldn't be painfully slow
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3. Diverse routing
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* We want to try out protocols like **ospf**, **babel**, **bgp**
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and so on and so forth
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* We want to build a network out of a mix and match of these all
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working in harmony toghether
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* Monocultures suck!
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4. Usable
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* We have DNS, we have voice chat servers and we have IRC (we
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even have gaming!) but we can always do with much **much more**!
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* We want the users, _you_, to make the network usable for your
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needs - who knows it might provide a service that helps out
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someone else
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5. Peering
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* We want people to setup redundant links using whatever protocols
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they want, be it **wireguard**, **GRE**, **fastd** etc.
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* We want there to be interesting links and diversity
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6. _Chaos and Order_
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* The network should never stop experimenting
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* But it should have 99% uptime and safety fallbacks
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* If you want to experiment - then go ahead and try cuase
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as little disruption as possible
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* If you run a node - make it secure - sign routes etc.
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to prevent others from experimenting from messing your
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network up
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We aim to create a more open Internet available to everyone and a place to learn about IP routing and networking in general.
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@ -19,28 +65,43 @@ mediums or routing daemon you choose to use is up to you - this falls in line wi
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## About the network
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### Ranges
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### IPv6 Ranges
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The subnets that we use so far are the below private ranges.
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Aggregate prefixes are organized as /48 IPv6 ULAs by region:
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* For **IPv4** we are running on the `10.0.0.0/8` range.
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* For **IPv6** we are running on the `fd8a:6111:3b1a::/48` range.
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1. European CRXN
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* Space: `fd8a:6111:3b1a::/48`
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2. Southern African CRXN
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* Space: `fded:4178:23fe::/48`
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3. Indian CRXN
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* Space: `fdfa:1685:3d1::/48`
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4. Russian CRXN
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* Space: `fda1:8885:300d::/48`
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5. American CRXN
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* Space: `fd68:b488:442c::/48`
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IPv4 note: If we run out we will simply use more private ranges but we will keep out the `192.168.0.0/16` range such that home networks (sane ones) will not have any clashes.
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The regional range sare not fixed in the sense that, for example, you could
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register a range in the Southern African range whilst your network is actaully
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physically located in Europe. We only do this to organize the network more
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easily.
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### The state of the network
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![CRXN babelweb map](map.png)
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The network is currently at a mere ~10 nodes with a few services being run over the network such as Mumble and NFS. The only routing
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daemon being used at this moment is babel and for tunnelling we are using fastd to establish VPN connections at an L2 layer between sites.
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The network is currently made up of around ~10 nodes so far with a few services running on
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the network, such as Mumble, [BonoboNET](/projects/bonobonet) (IRC), gaming (Xonotic, Minetest)
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and a few websites. We even have DNS which can resolve `.crxn` domains (find out more about that here (TODO).)
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In terms of transit we run fastd over clearnet, Yggdrasil and CJDNS.
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You can see the looking glass here (TODO).
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You can view the babel part of the network on the [live router map](http://deavmi.assigned.network:4444).
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You can also see a live map of the subset of users who are only running
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the original babel routing software, _babeld_, here, on the [live router map](http://deavmi.assigned.network:4444).
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## Getting started
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### Joining the network
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There is a tutorial (which is done for the most part) [here](peering.md) which will help you get connected onto the inter-network.
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Does it sound interesting enough for you already? Want to get connected? Then head on over
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to our [Getting started] section where you can find all the guides you need in order to get connected,
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follow the rules and have fun!
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