[ietf86-tech] Fwd: WAPs for Orlando

Thu Feb 7 10:11:14 PST 2013

Thanks Chris.
Our experience with deployments for NANOG, IEEE 802, ICANN, ISOC and other groups is that the integrated 2x3 MIMO antennas work just fine for our deployments because of our low power network design.

Rick Alfvin
VP Business Development

Verilan, Inc.
7327 SW Barnes Rd. #215
Portland, OR  97225

Mobile: +1 (585) 781-0952
Email: ralfvin at verilan.com
Skype: ralfvin.verilan
Website: www.verilan.com

On Feb 7, 2013, at 1:04 PM, Chris Elliott <chelliot at pobox.com> wrote:

> On Feb 7, 2013, at 12:38 PM, joel jaeggli <joelja at bogus.com> wrote:
> 
>> On 2/7/13 9:33 AM, Chris Elliott wrote:
>>> Was in a meeting...out now...
>>> 
>>> I'm assuming the 1142s have dual radios. If not, no way.
>> if it has one it's an 1141
>>> The real performance difference, given both have dual radios, is that the 1252s have support for 802.11n with three antennas per radio and MIMO support, in addition to .11a,b,g support, which only gives you two antennas with diversity. This support helps all clients, not just .11n clients, including 2.4Ghz clients where we don't enable .11n--we still get benefits from the better radio for both transmission and reception.
>> 1142 is 2 x 3 mimo
> 
> My bad. The radios are the same (or maybe a bit better in the 1142s as it's newer), --conflated the earlier 1132 and 1242 APs specs in my brain. Same on CPU/memory and uplink (gig). The only advantage for the 1252s would be the better antennas, which may not actually be beneficial in this environment. And i verified that the 1142s can do .11n on both radios without exceeding 15.4W poe.
> 
> So, I take it all back. I'm good with the 1142s. Our configs should drop right in, or with minimal changes (interface names? Probably the same).
> 
> Chris.
> 
>>> While I don't have numbers, I expect the 1252s to significantly outperform the 1142s in complex environments, especially with lots of high-speed clients. We only enable the higher-speeds on the interfaces (11M and up), and we certainly have a complex environment.
>>> 
>>> The faster CPU/more memory/faster wireless cards/radios may give slight improvements as well, but I'm much less certain that it's significant.
>>> 
>>> So, while I'm comfortable using the 1142s for common areas, lobbies, bars/restaurants, I would really like the 1252s for the meeting spaces, terminal room, and NOC.
>>> 
>>> Plus, we're using this installation over two meetings, so the additional installation effort and shipping costs are worth it, in my opinion.
>>> 
>>> Chris.
>>> 
>>> 
>>> --
>>> Chris Elliott
>>> CCIE # 2013
>>> 
>>> “You and I are mirages that perceive themselves”
>>> --Douglas Hofstadter
>>> 
>>> On Feb 7, 2013, at 11:46 AM, Warren Kumari <warren at kumari.net> wrote:
>>> 
>>>> On Feb 7, 2013, at 11:28 AM, Jim Martin <jim at daedelus.com> wrote:
>>>> 
>>>>> Gentlepeople,
>>>>>   A question from Rick. I personally am a bit leery, but I defer to our wireless experts....
>>>>> 
>>>>>   - Jim
>>>>> 
>>>>> Begin forwarded message:
>>>>> 
>>>>>> From: Rick Alfvin <ralfvin at verilan.com>
>>>>>> Subject: WAPs for Orlando
>>>>>> Date: February 7, 2013 8:14:48 AM PST
>>>>>> To: Jim Martin <jim at daedelus.com>
>>>>>> 
>>>>>> Hi Jim,
>>>>>> What would you think about using our 1142s for Orlando instead of the 1252s? IETF would save a lot of money on shipping
>>>> 
>>>> Hmmm… I think that if we do the 1142s[0] we should *also* have the 1252s available, sitting in a box incase we find some critical issue...
>>>> For our new kit / future meetings we could save the shipping, etc but for the first (IETF) run I think having the backup parachute might be good… (of course, not my $$$, etc)
>>>> 
>>>> W
>>>> [0]:  Which sounds like a fine idea to me, they seemed to work well in NANOG, better POE, etc, but not my call as I'm not the chappie supporting them…  Of course, one of Fabiha's jobs is attaching the external antennas to the 1252s, so if we don't ship them, she has less reason to attend….
>>>> 
>>>> 
>>>> 
>>>> 
>>>>>> and eliminate the hassle of dealing with external antennas. The 1142's have proven to be very robust for us and you'd have another performance data point when deciding what to replace the 1252's with when the gear is refreshed.
>>>>>> Thanks for your consideration.
>>>>>> -Rick
>>>>>> 
>>>>>> Rick Alfvin
>>>>>> VP Business Development
>>>>>> 
>>>>>> Verilan, Inc.
>>>>>> 7327 SW Barnes Rd. #215
>>>>>> Portland, OR  97225
>>>>>> 
>>>>>> Mobile: +1 (585) 781-0952
>>>>>> Email: ralfvin at verilan.com
>>>>>> Skype: ralfvin.verilan
>>>>>> Website: www.verilan.com
>>>>> _______________________________________________
>>>>> ietf86-tech mailing list
>>>>> ietf86-tech at daedelus.com
>>>>> http://www.daedelus.com/mailman/listinfo/ietf86-tech
>>>> --
>>>> Do not meddle in the affairs of dragons, for you are crunchy and taste good with ketchup.
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
>>>> ietf86-tech mailing list
>>>> ietf86-tech at daedelus.com
>>>> http://www.daedelus.com/mailman/listinfo/ietf86-tech
>>> _______________________________________________
>>> ietf86-tech mailing list
>>> ietf86-tech at daedelus.com
>>> http://www.daedelus.com/mailman/listinfo/ietf86-tech
>> 
> _______________________________________________
> ietf86-tech mailing list
> ietf86-tech at daedelus.com
> http://www.daedelus.com/mailman/listinfo/ietf86-tech