44net

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3196 discussions

Network topology and vpn connection.
by pete M 26 Oct '20

26 Oct '20

Hi! First I want to thanks the ampr group and especially G1FEF for providing me a /24 that I am in the process of being bgp annonce with a vultr vps in NJ. If what I am about to talk dont fit in the group, please let me know, I will move this else where. I am in no mean a network guru but I understand concept pretty easily. SO I am planning my /24 as this. the VPS at vultr will use Bird to annonce the route, I will use only the default route provided by vultr. >From there I created a dummy interface that have my /24 as its IP. I then want to make a VPN server to distribute the net and ip to remote site I have that use a mix of hardwired and wireless connection. The routers are all edgerouter-x from ubiquity they will all eventually be interconnected by 2 sources, the hardwired provided by many ISP and the wireless that I am building as a redundancy. If one sources fail, the router will fall back to the other link. the prefered links will always be the hardwired, the wireless is the backup. (some of the links are 40 Km long, but most are 5-6 Km and the smallest is under 1 Km.) >From those edge router I will have connection to the vpn and every router will have a dhcp server that will serve a part or the /24 like 16 ip for each site. (I have 3 site right now) and I will have fixed IP at each site for the repeaters and aprs gateways. Now the configuration of the vpn is my first problem. should I have the vpn server listening on the ipv4 address of vultr or should I made it listen to the dummy interface? I think this is juste the beginning of my quest! Pierre VE2PF

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How long for attribution of a ip segment?
by pete M 23 Oct '20

23 Oct '20

Hi! I asked a few months ago for a /24 so I could advertise it by BGP on a vultr server. I had receive a request to fill up a form, but for personal reason I was not able to pursue the project. rewind to end of september and I redo the request, fill out the form and do everything in order, well I hope, but it was delayed cause the emails I was receiving kept going into the spam folder.. Sent a few email back to ask the status, if my form was filled ok, I had no answer. I am just wondering if I did something wrong or if the request is en route. Sorry if this is the wrong forum to ask. Pierre VE2PF

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ARDC Office Hours: Thurs Nov. 12 @ 17:00 UTC
by Rosy Wolfe 22 Oct '20

22 Oct '20

Hello 44net! In our video call on Oct. 10, I heard from folks that they were interested in more regular meetings and office hours. So - let's give the office hours a try! I'll be online for two hours on Thurs. Nov. 12 @ 17:00 UTC (10am PT / 1pm ET / 6pm BST). Link to the video call will be posted in advance. Looking forward to chatting with you soon! All the best, Rosy -- Rosy Wolfe Executive Director Amateur Radio Digital Communications (ARDC) ampr.org

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Re: [44net] Thanks to everyone for a good 44net community call!
by Rob Janssen 19 Oct '20

19 Oct '20

> Is the European Asterisk/DUNDI/AMPRNet voip network you describe below documented somewhere? I tried to google around but did not find anything. There is some scattered information, e.g. this at DB0WA: https://www.afu.rwth-aachen.de/projekte/hamnet/anwendungen/sip-telefonie https://www.afu.rwth-aachen.de/projekte/hamnet/infos-fuer-betreiber/dundi-n… This page also describes a crawler for such nodes and shows a map, but I think this crawler is dead as the map shows information from last year and has not been updated since. That is probably related to the renumbering of the German/Austrian network. (as you know these networks ended up being in the part that was sold) I don't know if the network itself is still actively maintained or if it is just an experiment that is not interesting to its inventers anymore and just keeps running until the servers crash, someone turns them off, or a disruption such as the renumbering occurs. At least locally for me it works fine, but I use it mainly for calls to one other person who is on the same PBX as I am. Rob

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Re: [44net] Thanks to everyone for a good 44net community call!
by Rob Janssen 19 Oct '20

19 Oct '20

> If you're offering to organize, create and open-source a conferencing > system that does what Zoom does AND SCALES UP, be my guest! You could > even apply to us for a grant... I don't know how wide its coverage is, but here in Europe we have a network of Asterisk PABXes on AMPRnet that have interconnecting trunks between them that allow you to call anyone on the network on their roaming number. Phone numbers are allocated based on the callsign (using a scheme based on the letters printed on DTMF keypads. based on my callsign, my phone number is 713210234253 for "1st letter on key 7, 2nd letter on key 3, digit 1, 3rd letter on key 2, 2nd letter on key 4, 3rd letter on key 5" giving PE1CHL ). The DUNDi trunk protocol distributes the information about the home server for each number across the network, so all Asterisk servers know how to route the calls. It is easy to host a conference on one or more of the Asterisk servers and have everyone dial in to that. There is such a conference running on my local server where I have my IP phone connected all the time. I think such systems can do low-bandwidth video as well, but I have never tried that. For audio it works perfectly. > Seriously, this touches on one of my pet topics: IP multicasting. A huge > amount of work went into the development of IP multicast protocols in > the 1980s and 1990s, yet nearly all of it has been stillborn. It sees > use only in walled gardens like AT&T Uverse (an IPTV over VDSL service > in the US) and in degenerate form for intra-net resource discovery on LANs. I agree that would be much more efficient than having the basic star-type structure where everyone gets the same stream from one server. That would be one thing that could be implemented in AMPRnet to show the world that it really has advantages. For phone quality voice and the number of attendees we would expect, running this over AMPRnet in the star configuration should be no issue. Rob

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Recap from Oct. 10 Video Call
by Rosy Wolfe 15 Oct '20

15 Oct '20

Hi 44net, Thanks again to everyone who joined us on Saturday's call. I really enjoyed getting to share about what we've been doing with all of you. A recap of the meeting has been posted here, including links to slides, survey results, and the chat. We've also provided answers to all of the questions brought up in the chat, to make sure we got them all covered. https://www.ampr.org/recap-ardc-44net-oct-10-community-call/ The one thing that's not posted is the video - we are having an issue with the file and will post it as soon as it's resolved. Thanks for your patience! In the meantime, please enjoy rest of the materials and written Q+A. Looking very forward to the next call! All the best, Rosy -- Rosy Wolfe Executive Director Amateur Radio Digital Communications (ARDC) ampr.org

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HNAP4PlutoSDR - HAMNET on 70cm with the PlutoSDR
by Jann Traschewski 15 Oct '20

15 Oct '20

Hello AMPRNet, we like to announce a new open source HAMNET-access solution for the 70-cm-band making use of the popular ADALM Pluto SDR. Lukas Ostendorf recently finished his master thesis "Design of a Radio Communications Protocol for HAMNET Access in the 70cm Amateur Radio Band" at our employer Rohde & Schwarz in Munich. We are pleased to publish his work and further material today: https://hnap.de/2020/09/08/master-thesis-released.html There are still some tasks like signal amplification on the roadmap, but the community is growing and helping to move on. It seems the telegram group chat is currently the best place to exchange: https://t.me/hamnet_access_protocol Most communication is in German, however I'm pretty sure English is fine as well. At least you will find nice pictures of current experiments in the backlog :) Looking forward to your contribution, for the HNAP-Team, Jann DG8NGN -- Jann Traschewski, Faber-Castell-Str. 9, D-90522 Oberasbach, Germany Tel.: +49-911-99946898, Mobile: +49-170-1045937, E-Mail: jann(a)gmx.de Ham: DG8NGN / DB0VOX / DB0FOX / DB0ZM / DB0DBA / DB0HZS

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Re: [44net] Thanks to everyone for a good 44net community call!
by Rob Janssen 13 Oct '20

13 Oct '20

> Mikrotik is the only one among cheaper gear to have a PIM (only Sparse mode) implementation. It is a bit clumsy but with a few tweaks it is (from my experience so far) manageable. Do you have a description somewhere how you set it up in a 44Net network? We have a national network over here with many (mostly) MikroTik routers linked by radio links and VPNs. It could be an interesting experiment... Rob

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Re: [44net] Thanks to everyone for a good 44net community call!
by Rob Janssen 13 Oct '20

13 Oct '20

> We also have a network of PBX's tied together here in the US but using > AREDN Mesh connectivity. Phone numbers are a flat 4-digits for local > calling. For wide area calls, the person's (or service) 3-digit area > code is prepended to the 4-digit local number. There are around 40 pbx's > scattered around the world on this network. There is a White Pages > directory to determine a person's (or service) phone number. > It would be interesting to try to connect the two systems together. Of course it is always tricky to interconnect two systems that have a different and potentially conflicting numbering plan. I actually like the numbering plan they use here. You number is not tied to the PBX you have registered on, but it roams with you wherever you connect. So when the local situation changes (someone stops providing the service or some more nearby PBX appears where you have better connectivity or better services) you can just port your existing number without problem. And no directory is required, I can just dial numbers on the keypad knowing only the callsign. For you it would be 62206142 It would have been even better when they had thought of having some unique prefix that makes it recognizable as a HAM number and not a POTS phone number, and that avoids collisions with other numbering plans. Rob

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Re: [44net] Thanks to everyone for a good 44net community call!
by Rob Janssen 12 Oct '20

12 Oct '20

> Sorry about the glitches at the beginning. Jitsi was giving us problems > (frozen or long-delayed video, etc) so I made the call to switch to > Zoom. We regularly use zoom internally within ARDC for Board and Grant > Advisory Committee meetings and it has performed well; it also seemed to > work well today. I am a bit disappointed that, as a group of radio amateurs active in IP networking, supposedly the people who know all about how to setup a communication system all by themselves, we have to resort to a system like zoom.us to hold a conference. Rob

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