nanog mailing list archives
Re: 10 Mbit/s problem in your network
From: joel jaeggli <joelja () bogus com>
Date: Mon, 25 Feb 2013 09:55:47 -0800
On 2/25/13 8:42 AM, Warren Bailey wrote:
That would be a rather extreme over-simplifcation of spatial-division-multiplexing and space-time-coding.I should probably know this, but doesn't N just spread better and have the ability to send receive on multiple polarizations?
As an RF engineer I should probably know this, but I can't think of many people in my industry who really care about 802.11_. I really don't even use wireless in my house, though it's generally due to overcrowding the spectrum in populous areas. From my Android phone on T-Mobile. The first nationwide 4G network. -------- Original message -------- From: Owen DeLong <owen () delong com> Date: 02/25/2013 8:38 AM (GMT-08:00) To: Frank Bulk <frnkblk () iname com> Cc: NANOG <nanog () nanog org> Subject: Re: 10 Mbit/s problem in your network Correct. However, while A is 5Ghz (only), it's not significantly better than G. The true performance gains come from 5Ghz and N together. N on 2.4Ghz has limited benefit over G. N on 5Ghz is significantly better. Owen On Feb 24, 2013, at 8:56 PM, "Frank Bulk" <frnkblk () iname com> wrote:The IEEE 802.11n standards do not require 5 GHz support. It's typical, but not necessary. Frank -----Original Message----- From: Owen DeLong [mailto:owen () delong com] Sent: Sunday, February 17, 2013 2:07 PM To: Jay Ashworth Cc: NANOG Subject: Re: 10 Mbit/s problem in your network On Feb 17, 2013, at 08:33 , Jay Ashworth <jra () baylink com> wrote:----- Original Message -----From: "Scott Howard" <scott () doc net au>A VPN or SSH session (which is what most hotel guests traveling for work will do) won't cache at all well, so this is a very bad idea. Might improve some things, but not the really important ones.The chances of the average hotel wifi user even knowing what SSH means is close to zero.{{citation-needed}}As an aside, I was sitting in JFK airport (terminal 4) a few days ago and having a shocking time getting a good internet connection - even from my own Mifi. I fired up inSSIDer, and within a few seconds it had detected 122 AP's...Yup; B/G/N congestion is a real problem. Nice that the latest generation of both mifi's and cellphones all seem to do A as well, in addition to current-gen business laptops (my x61 is almost 5 years old, and speaks A).I think by A you actually mean 5Ghz N. A doesn't do much better than G, though you still have the advantage of wider channels and less frequency congestion with other uses. Owen
Current thread:
- Re: 10 Mbit/s problem in your network, (continued)
- Re: 10 Mbit/s problem in your network joel jaeggli (Feb 18)
- Re: 10 Mbit/s problem in your network Owen DeLong (Feb 18)
- RE: 10 Mbit/s problem in your network Frank Bulk (Feb 24)
- Re: 10 Mbit/s problem in your network Owen DeLong (Feb 25)
- Re: 10 Mbit/s problem in your network Warren Bailey (Feb 25)
- Re: 10 Mbit/s problem in your network Owen DeLong (Feb 25)
- Re: 10 Mbit/s problem in your network Warren Bailey (Feb 25)
- Re: 10 Mbit/s problem in your network Rob Seastrom (Feb 26)
- Re: 10 Mbit/s problem in your network Warren Bailey (Feb 26)
- Re: 10 Mbit/s problem in your network Neil Harris (Feb 26)
- Re: 10 Mbit/s problem in your network joel jaeggli (Feb 25)
- RE: 10 Mbit/s problem in your network Frank Bulk (iname.com) (Feb 25)
- Re: 10 Mbit/s problem in your network Constantine A. Murenin (Feb 09)
- Re: 10 Mbit/s problem in your network Masataka Ohta (Feb 11)
- Re: 10 Mbit/s problem in your network James Cloos (Feb 16)
- Re: 10 Mbit/s problem in your network JP Velders (Feb 10)
- Re: 10 Mbit/s problem in your network Måns Nilsson (Feb 10)
- Re: 10 Mbit/s problem in your network fredrik danerklint (Feb 10)
- Re: 10 Mbit/s problem in your network JP Velders (Feb 10)