[1st-mile-nm] Wireless backhaul

John Brown john at citylinkfiber.com
Thu May 2 18:45:16 PDT 2013


Thanks for the kind words....  We try and are constantly improving.

We have nearly 2 dozen air-fibers in operation in ABQ.

I have only two words to say about them.   THEY WORK(tm)

There are certain tricks and skill/craft to make them work.  

Many network operators get away with engineering murder on the 2.4 thru 5.8 Ghz spectrum / gear.
The slop you can get away with on the "WiFi-ish" gear will kill you, crush you, on the higher end stuff.

You must ALWAYS engineer your paths, down to a nats-a....   If you don't, you will have problems.
RF Engineering
Physical hard touch LOS inspection (I love my bucket truck :)  )
Bandwidth engineering and management if over subscribing
Core / critical links are always licensed, or unique enough from the noise
Tight beams (be a good neighbor)
Proper QOS handling on packets.
Monitor, Monitor, Monitor  read do LOTS of SNMP and watch it.
Installation standards that are verified and are tight with each install.

Each site survey we do takes about 10 minutes for prelim (yes /no)
If yes and customer is willing to pay the rates, then the real survey/engineering is about 3 to 4 hours.
Only if Yes from this process will we install.  No marginal.

My house gets this http://www.speedtest.net/result/2675514643.png
It's a UBNT Rocket M5-Ti back to another M5-Ti (ptp) then to an AF24 to downtown.
It's a routed link via a Cisco 3650G that glues the AF24 to the M5-Ti ptp and sector gear

None of our sector or backhaul ptp's have anything less than a GigE Ethernet port on the radio.
The ether shouldn't be the limiting factor on the path.


> -----Original Message-----
> From: 1st-mile-nm-bounces at mailman.dcn.org [mailto:1st-mile-nm-
> bounces at mailman.dcn.org] On Behalf Of Michael Harris
> Sent: Thursday, May 02, 2013 7:31 PM
> To: 1st-mile-nm at mailman.dcn.org
> Subject: [1st-mile-nm] Wireless backhaul
> 
> John's response just now about CityLink Wireless's backhaul capabilities
> impressed me greatly. I've seen excellent performance in the 100Mb range
> from LigoWave and Ubiquti equipment, but have been unimpressed with
> Ubiquiti's AirFiber, which claims to offer gigabit throughput.
> 
> What are other people using and what are your feelings about the wireless
> market in general?
> 
> --
> 
> Michael Harris
> --
> President, Visgence Inc.
> www.visgence.com <http://www.visgence.com/>



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