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RE: cpu needed to NAT 45mbs

  • From: Frank Bulk
  • Date: Mon Nov 12 08:07:02 2007

I would have disagree with your point on centralized AP controllers --
almost all the vendors have some form of high availability, and Trapeze's
offering, new (and may not yet be G.A) purports to be almost entirely
seamless in its load sharing and failover support.

Now that dual-band radios in laptops are becoming more prevalent, it's
possible to get 30 to 50% of your user population using 802.11a.

Frank

-----Original Message-----
From: owner-nanog@xxxxxxxxx [mailto:owner-nanog@xxxxxxxxx] On Behalf Of Joel
Jaeggli
Sent: Saturday, November 10, 2007 11:51 PM
To: Adrian Chadd
Cc: Suresh Ramasubramanian; nanog@xxxxxxxxx
Subject: Re: cpu needed to NAT 45mbs

Adrian Chadd wrote:
> On Sat, Nov 10, 2007, Suresh Ramasubramanian wrote:
>
>> Speaking of all that, does someone have a "conference wireless'  bcp
>> handy?  The sort that starts off with "dont deploy $50 unbranded
>> taiwanese / linksys etc routers that fall over and die at more than 5
>> associations, place them so you dont get RF interference all over the
>> place etc" before going on to more faqs like what to do so worms dont
>> run riot?
>>
>> Comes in handy for that, as well as for public wifi access points.
>
> Everyone I speak to says something along the lines of
>
> "Why would I put that sort of stuff up? I want people to pay me for
> that kind of clue."

I did a presentation a couple of years ago at nanog on high-density
conference style wireless deployments. It's in the proceedings from
Scottsdale. Fundamentally the game hasn't changed that much since then:

Newer hardware is a bit more robust.

Centralized AP controllers are beguiling but have to be deployed with
high availability in mind because putting all your eggs in a smaller
number of baskets carriers some risk...

If you can, deploy A to draw off some users from 2.4ghz.

Design to keep the number of users per radio at 50 or less in the worst
case.

Instrument everything...


> There are slides covering basic stuff and observations out there.
>
> (I'm going through a wireless deployment at an ISP conference next week;
> I'll draft up some notes on the nanog cluepon site.)
>
>
>
>
> Adrian
>