<div dir="ltr">On Thu, Feb 7, 2013 at 1:04 PM, Chris Elliott <span dir="ltr"><<a href="mailto:chelliot@pobox.com" target="_blank">chelliot@pobox.com</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div class="im">On Feb 7, 2013, at 12:38 PM, joel jaeggli <<a href="mailto:joelja@bogus.com">joelja@bogus.com</a>> wrote:<br>
<br>
> On 2/7/13 9:33 AM, Chris Elliott wrote:<br>
>> Was in a meeting...out now...<br>
>><br>
>> I'm assuming the 1142s have dual radios. If not, no way.<br>
> if it has one it's an 1141<br>
>> 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.<br>
> 1142 is 2 x 3 mimo<br>
<br>
</div>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.<br>
<br>
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).<br></blockquote><div><br></div><div style="font-family:arial,sans-serif;font-size:13px">
I have some AIR-AP1142N-A-K9 at the office in Santa Clara which I provisioned with the Arista 1252.ini that I derived from the one we use at the IETF. Other than the weird autoprovisioning failure (losing the L3 address on BVI1), which I do not attribute to it being an 1142, it Just Worked(tm), and all the tools (netdisco, rancid, et al) work the same too.</div>
<div class="" style="font-family:arial,sans-serif;font-size:13px"></div><div><br></div><div style> Bill</div><div style> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<span class=""><font color="#888888"><br>
Chris.<br>
</font></span><div class=""><div class="h5"><br>
>> 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.<br>
>><br>
>> 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.<br>
>><br>
>> 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.<br>
>><br>
>> Plus, we're using this installation over two meetings, so the additional installation effort and shipping costs are worth it, in my opinion.<br>
>><br>
>> Chris.<br>
>><br>
>><br>
>> --<br>
>> Chris Elliott<br>
>> CCIE # 2013<br>
>><br>
>> “You and I are mirages that perceive themselves”<br>
>> --Douglas Hofstadter<br>
>><br>
>> On Feb 7, 2013, at 11:46 AM, Warren Kumari <<a href="mailto:warren@kumari.net">warren@kumari.net</a>> wrote:<br>
>><br>
>>> On Feb 7, 2013, at 11:28 AM, Jim Martin <<a href="mailto:jim@daedelus.com">jim@daedelus.com</a>> wrote:<br>
>>><br>
>>>> Gentlepeople,<br>
>>>> A question from Rick. I personally am a bit leery, but I defer to our wireless experts....<br>
>>>><br>
>>>> - Jim<br>
>>>><br>
>>>> Begin forwarded message:<br>
>>>><br>
>>>>> From: Rick Alfvin <<a href="mailto:ralfvin@verilan.com">ralfvin@verilan.com</a>><br>
>>>>> Subject: WAPs for Orlando<br>
>>>>> Date: February 7, 2013 8:14:48 AM PST<br>
>>>>> To: Jim Martin <<a href="mailto:jim@daedelus.com">jim@daedelus.com</a>><br>
>>>>><br>
>>>>> Hi Jim,<br>
>>>>> What would you think about using our 1142s for Orlando instead of the 1252s? IETF would save a lot of money on shipping<br>
>>><br>
>>> 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...<br>
>>> 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)<br>
>>><br>
>>> W<br>
>>> [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….<br>
>>><br>
>>><br>
>>><br>
>>><br>
>>>>> 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.<br>
>>>>> Thanks for your consideration.<br>
>>>>> -Rick<br>
>>>>><br>
>>>>> Rick Alfvin<br>
>>>>> VP Business Development<br>
>>>>><br>
>>>>> Verilan, Inc.<br>
>>>>> 7327 SW Barnes Rd. #215<br>
>>>>> Portland, OR 97225<br>
>>>>><br>
>>>>> Mobile: +1 (585) 781-0952<br>
>>>>> Email: <a href="mailto:ralfvin@verilan.com">ralfvin@verilan.com</a><br>
>>>>> Skype: ralfvin.verilan<br>
>>>>> Website: <a href="http://www.verilan.com" target="_blank">www.verilan.com</a><br>
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>>> --<br>
>>> Do not meddle in the affairs of dragons, for you are crunchy and taste good with ketchup.<br>
>>><br>
>>><br>
>>><br>
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