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The Hack Day Manifesto

hackdaymanifesto.com

11–20 of 24 posts

Re: The Hack Day Manifesto

#11
post #10

8 ip addresses per attendee? That's a little high. It's incredibly hard to make DHCP work at that scale, and allocating 8 per attendee is wrong. Try 4 - if you're being nice - or 2 if you're constrained. (2 = one smartphone/tablet and a computer).

one of the reasons to go high on IP addresses is because many devices don't release their leases properly, which can cause all sorts of havoc.

Re: The Hack Day Manifesto

#12
post #11
post #10

8 ip addresses per attendee? That's a little high. It's incredibly hard to make DHCP work at that scale, and allocating 8 per attendee is wrong. Try 4 - if you're being nice - or 2 if you're constrained. (2 = one smartphone/tablet and a computer).

one of the reasons to go high on IP addresses is because many devices don't release their leases properly, which can cause all sorts of havoc.

That's true. but having dhcp capacity for more than 255 IPs is hard (or, expensive). for a 20-30 person hackday, the organizer shouldn't be worrying about overkill network provision, and should spend that time/money worrying about good food, or something else. (imho)

Re: The Hack Day Manifesto

#13
post #11
post #10

8 ip addresses per attendee? That's a little high. It's incredibly hard to make DHCP work at that scale, and allocating 8 per attendee is wrong. Try 4 - if you're being nice - or 2 if you're constrained. (2 = one smartphone/tablet and a computer).

one of the reasons to go high on IP addresses is because many devices don't release their leases properly, which can cause all sorts of havoc.

20/30 people on a regular router that has an IP range of 255 IPs will quite often fall over, I've seen it happen more than once.

Re: The Hack Day Manifesto

#14
post #12
post #11

Earlier quoted context omitted.

one of the reasons to go high on IP addresses is because many devices don't release their leases properly, which can cause all sorts of havoc.

That's true. but having dhcp capacity for more than 255 IPs is hard (or, expensive). for a 20-30 person hackday, the organizer shouldn't be worrying about overkill network provision, and should spend that time/money worrying about good food, or something else. (imho)

for a 20-30 person hackday, it's not so much of a big problem. You wouldn't need more than a /24 for that, and you'd still be inside the * 8. But most tech events with more than 100-ish people I've been to have failed on their wifi at some point, and it's normally for this reason.

Re: The Hack Day Manifesto

#15
post #13
post #11

Earlier quoted context omitted.

one of the reasons to go high on IP addresses is because many devices don't release their leases properly, which can cause all sorts of havoc.

20/30 people on a regular router that has an IP range of 255 IPs will quite often fall over, I've seen it happen more than once.

right, I'm not so sure that's because of DHCP, though.

Re: The Hack Day Manifesto

#16
post #13
post #11

Earlier quoted context omitted.

one of the reasons to go high on IP addresses is because many devices don't release their leases properly, which can cause all sorts of havoc.

20/30 people on a regular router that has an IP range of 255 IPs will quite often fall over, I've seen it happen more than once.

Also, that's mostly when you don't tell people "hey, can you not put your iPhones and Android mobile phones on the wireless?"

Re: The Hack Day Manifesto

#17

This is awesome. Thank you for putting it together. As I am in a group scheduling a Hackathon, we can put it to immediate use. I'd like to see a lot more articles of this usefulness and information density on HN. I would like to complain about a very minor point though, but one that drives me bonkers. The overuse of the word "manifesto" must stop. I even wrote an article attempting to collect all the internet manifes…

It's actually a "manifest" -- a list of things that are included (well, should be included) -- in any hack event.

I guess he was misled by the URL and title of the document, both of which say Manifesto and not manifest.

On a less snarky note (sorry about that), it seems like a good check list for putting together an event I'd like to attend. As someone else noted, none of the demo-parties and hackathons I've attended have ever checked off every box. On the other hand, it might be a cultural thing -- I imagine these events to be more developed around the valley where they're more common.

Re: The Hack Day Manifesto

#19
post #13
post #11

Earlier quoted context omitted.

one of the reasons to go high on IP addresses is because many devices don't release their leases properly, which can cause all sorts of havoc.

20/30 people on a regular router that has an IP range of 255 IPs will quite often fall over, I've seen it happen more than once.

The issue is mainly that domestic routers NAT tables tend to overflow with that many users on them.

Either this causes them to reboot (if they're crappy) or truncate the table, killing the oldest connection.

Re: The Hack Day Manifesto

#20
post #15
post #13

Earlier quoted context omitted.

20/30 people on a regular router that has an IP range of 255 IPs will quite often fall over, I've seen it happen more than once.

right, I'm not so sure that's because of DHCP, though.

DHCP pool being exhausted or NAT table getting full are the two main problems I've seen at hackdays
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