help! network is down at Omni! - sudo-discuss

Marc Juul

1 Apr 1 Apr

2:53 a.m.

We ran some tests and it seems like there is very high latency (around 200 ms) and packet loss (18% was the lowest I saw) on the wifi. This is based on flood pinging a wifi-connected laptop from the gateway (saros). There appeared to be no such issues going from saros over ethernet to a laptop or from saros over ethernet to the wifi access points. This is very confusing because even though the APs have a central controller, the traffic from the AP's clients does not flow through the controller so something would have to be wrong with multiple APs at the same time. Jake tested from both ends of the building to ensure it wasn't just one AP. Unless there is massive wifi interference at Omni or a malicious wifi device, I can't think of what it could be. Then of course there is the issue of the unreachable ethernet-connected door computer. No idea there. More debugging needed to get to the bottom of this. On Fri, Apr 1, 2022 at 9:39 AM Jake via sudo-discuss < sudo-discuss(a)sudoroom.org> wrote:

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the front door computer is unreachable, because some network switch between it and the server is not working right i guess... either one of the switches upstairs (in the "public computer lab") or something in the network cage. I had to leave before i was able to figure out what was wrong and I can't access the front door computer from theh network, so I don't know whether card access will work although now that i think about it, it probably does work. the wifi was being really really really slow tonight (thursday night) and Arthur and I were trying to figure out what was wrong, and Yar and Marc helped remotely, but we never figured out where the problem was, and I didn't realize until i had to leave that the front door computer is entirely inaccessible. $ ping 100.64.64.11 "No route to host" even though i power cycled it and it's getting a link light. I don't actually know where the other end of its ethernet cable is but since the front door computer is important to security and accessibility, this worries me. Can someone who understands the building's network please try to fix this ASAP? -jake _______________________________________________ sudo-discuss mailing list -- sudo-discuss(a)sudoroom.org To unsubscribe send an email to sudo-discuss-leave(a)sudoroom.org More options at https://sudoroom.org/lists/postorius/lists/sudo-discuss.sudoroom.org/

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Jake

2:59 p.m.

The consequences are that the front door computer is not accessible over the internet AND it's not working so people can't gain access to the building using their cards. also the wifi is super slow, I don't know why. The only person who knows anything about the wifi system is Daniel and I can't find his email address but over Signal he said he'd come look at it on Saturday. I am very grateful for the tons of labor he poured into setting up our elaborate wifi system (as well as getting the equipment donated) but we should improve documentation of the system so that more people are able to figure out what's wrong when things go wrong. I'm going to need to go there and fix it apparently. -jake On Fri, 1 Apr 2022, Andrew R Gross via sudo-discuss wrote:

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What is the consequence until this is resolved? Is the local WiFi usable? Jake, did you say the access system is still functional? *Andrew R Gross, (he/him)* 412.657.5332 - shrad.org <http://www.shrad.org> On Fri, Apr 1, 2022 at 2:53 AM Marc Juul via sudo-discuss < sudo-discuss(a)sudoroom.org> wrote:

We ran some tests and it seems like there is very high latency (around 200 ms) and packet loss (18% was the lowest I saw) on the wifi. This is based on flood pinging a wifi-connected laptop from the gateway (saros). There appeared to be no such issues going from saros over ethernet to a laptop or from saros over ethernet to the wifi access points. This is very confusing because even though the APs have a central controller, the traffic from the AP's clients does not flow through the controller so something would have to be wrong with multiple APs at the same time. Jake tested from both ends of the building to ensure it wasn't just one AP. Unless there is massive wifi interference at Omni or a malicious wifi device, I can't think of what it could be. Then of course there is the issue of the unreachable ethernet-connected door computer. No idea there. More debugging needed to get to the bottom of this. On Fri, Apr 1, 2022 at 9:39 AM Jake via sudo-discuss < sudo-discuss(a)sudoroom.org> wrote:

the front door computer is unreachable, because some network switch between it and the server is not working right i guess... either one of the switches upstairs (in the "public computer lab") or something in the network cage. I had to leave before i was able to figure out what was wrong and I can't access the front door computer from theh network, so I don't know whether card access will work although now that i think about it, it probably does work. the wifi was being really really really slow tonight (thursday night) and Arthur and I were trying to figure out what was wrong, and Yar and Marc helped remotely, but we never figured out where the problem was, and I didn't realize until i had to leave that the front door computer is entirely inaccessible. $ ping 100.64.64.11 "No route to host" even though i power cycled it and it's getting a link light. I don't actually know where the other end of its ethernet cable is but since the front door computer is important to security and accessibility, this worries me. Can someone who understands the building's network please try to fix this ASAP? -jake _______________________________________________ sudo-discuss mailing list -- sudo-discuss(a)sudoroom.org To unsubscribe send an email to sudo-discuss-leave(a)sudoroom.org More options at https://sudoroom.org/lists/postorius/lists/sudo-discuss.sudoroom.org/

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Jake

7:50 p.m.

it does work without a network connection! it DOESN'T work when it's being hammered with packets apparently. On Fri, 1 Apr 2022, Yardena Cohen wrote:

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The door computer should still work without a network connection. If people can't even swipe into the building, then it's probably not a network issue.

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