nanog mailing list archives
Re: Big Temporary Networks
From: joel jaeggli <joelja () bogus com>
Date: Sun, 16 Sep 2012 09:42:27 -0700
On 9/16/12 9:24 AM, Jay Ashworth wrote:
We tend to engineer for a maximum of around 50 associations per radio (not AP). beyond that performance really starts to suck which can be measured along a multitude of dimensions. The most visible one to the client(s) being latency due to loss and subsequent retransmission.----- Original Message -----From: "Gaurab Raj Upadhaya" <gaurab () lahai com>So you're *REALLY* motivated on this "reduce the coverage" thing, then.you could say yes :), reduce the coverage per-AP. Most APs I have seen will start failing with about ~100 associations and not to forget about the max GE uplink they have. that's about 40-50 people at most (being optimist).Really? 100 associations? On enterprise/carrier grade gear? Seriously?
Reduction in coverage is done on a couple of dimensions. that ap with the 3-5dBi gain dipoles probably shouldn't be 100mW. but the noise floor is in a different place when the room is full of clients so it can't be to low either. Dropping the low speed rates backward compatibility with 802.11b and setting the multicast rate to something higher will force clients in marginal coverage situations to roam more quickly, hog the air less and allow for higher throughput.
g) we have a /32 and /20 (v6 and v4 respectively) address space assigned by APNIC for this and other events in Asia (including the APNIC meeting itself) so we use that. We used to have a v4 /16 though before runout.I'm talking to someone from the Interop team; they have a dedicated /8.They gave that 45/8 back and kept 2 x /16 for themselves.I did not know that. Good on 'em. Cheers, -- jra
Current thread:
- Re: Big Temporary Networks, (continued)
- Re: Big Temporary Networks Jo Rhett (Sep 18)
- Re: Big Temporary Networks Jay Ashworth (Sep 20)
- Re: Big Temporary Networks Jo Rhett (Sep 18)
- Re: Big Temporary Networks William Herrin (Sep 18)
- Re: Big Temporary Networks Jo Rhett (Sep 18)
- Re: Big Temporary Networks Robert Bonomi (Sep 18)
- Re: Big Temporary Networks William Herrin (Sep 18)
- Re: Big Temporary Networks Robert Bonomi (Sep 18)
- Re: Big Temporary Networks George Herbert (Sep 18)
- Re: Big Temporary Networks joel jaeggli (Sep 16)
- Re: Big Temporary Networks Niels Bakker (Sep 17)
- Re: Big Temporary Networks joel jaeggli (Sep 20)
- the economies of scale of a Worldcon, and how to make this topic relevant to Nanog Jo Rhett (Sep 20)
- Re: the economies of scale of a Worldcon, and how to make this topic relevant to Nanog Jay Ashworth (Sep 21)
- Re: the economies of scale of a Worldcon, and how to make this topic relevant to Nanog Jo Rhett (Sep 21)
- Re: the economies of scale of a Worldcon, and how to make this topic relevant to Nanog Robert Bonomi (Sep 22)
- Re: the economies of scale of a Worldcon, and how to make this topic relevant to Nanog Jay Ashworth (Sep 23)
- Re: the economies of scale of a Worldcon, and how to make this topic relevant to Nanog Jimmy Hess (Sep 23)