[Mikrotik] nstreme dual

Aaron, Network Administrator, Great Lakes Internet support9 at greatlakes.net
Fri Oct 24 11:51:51 CDT 2008


That's exactly what I needed, thank you for all the replies.

---

Aaron, MCP, Network+, A+
Network Administrator
support9 at greatlakes.net
 
Great Lakes Internet, Inc
112 N. Howard
Croswell, MI 48422
 
(810) 679-3395
MI Toll-Free (877) 558-8324

-----Original Message-----
From: mikrotik-bounces at mail.butchevans.com
[mailto:mikrotik-bounces at mail.butchevans.com] On Behalf Of ccrum
Sent: Friday, October 24, 2008 12:29 PM
To: Mikrotik discussions
Subject: Re: [Mikrotik] nstreme dual

Simple answer is no. 25 dB is pretty damn good...most dual pol feeds are

good to get between 15 and 20 dB isolation, but I'd be willing to bet 
that you'd ever really see that on the same antenna with the same 
frequency if you put it on a spectrum analyzer and checked it. I've done

a lot of dual-nstreme links and I find that you need at least 100 MHz 
channel separation for optimum performance on a high quality dual pol 
dish. Using this, I'm typically able to get between 25-30Mbps FDX on 
RB532's and a little better on 433's or 600's.

Cameron

Aaron, Network Administrator, Great Lakes Internet wrote:
> Is there enough separation between the two polarities to run both on
the
> same frequency?
>
> I'm looking to replace a 10mbps orthogon with a higher capacity link
> without having to pay to price for a license upgrade on the orthogon.
> I'd like to not use any more of the band than I am already using.
>
> ---
>
> Aaron, MCP, Network+, A+
> Network Administrator
> support9 at greatlakes.net
>  
> Great Lakes Internet, Inc
> 112 N. Howard
> Croswell, MI 48422
>  
> (810) 679-3395
> MI Toll-Free (877) 558-8324
>
>
> -----Original Message-----
> From: mikrotik-bounces at mail.butchevans.com
> [mailto:mikrotik-bounces at mail.butchevans.com] On Behalf Of Josh
Luthman
> Sent: Wednesday, October 22, 2008 9:06 PM
> To: Mikrotik discussions
> Subject: Re: [Mikrotik] nstreme dual
>
> Both of my links are using dual polarity dishes.  Horizontal and
> Vertical on
> one big fat happy antenna =)
>
> If you're just trying to figure out which to use I highly advise OSPF.
> If
> you're #1 concern is bandwidth (and you're forced to MikroTik) then go
> dual
> nstreme.
>
> Josh Luthman
> Office: 937-552-2340
> Direct: 937-552-2343
> 1100 Wayne St
> Suite 1337
> Troy, OH 45373
>
> Those who don't understand UNIX are condemned to reinvent it, poorly.
> --- Henry Spencer
>
>
> On Wed, Oct 22, 2008 at 8:09 PM, Keith Barber <keith at reliablevi.com>
> wrote:
>
>   
>> I never thought about using two wds links on the same dish.
>> I wonder how much you would gain in this configuration over dual
>>     
> nstreme?
>   
>> As the nstreme requires quite a bit of horsepower once you start
>>     
> pushing a
>   
>> lot of traffic through the link.
>>
>> -Keith-
>>
>> ----- Original Message -----
>> From: Kevin Neal <kevin at safelink.net>
>> Sent: Wed, 10/22/2008 6:58pm
>> To: 'Mikrotik discussions' <mikrotik at mail.butchevans.com>
>> Subject: Re: [Mikrotik] nstreme dual
>>
>> Two separate boards.  Right now we have an x86 Mikrotik router on
both
>> ends,
>> one of the links is using RB532's and the other is actually a
Redline.
>>  This
>> is a 24 mile link and we are needing more capacity.  At the moment
>>     
> with the
>   
>> limited tower space we're going to be installing some dual polarity
>> feedhorns in the PacWireless 2' antennas and then having three links
>> between
>> the sites.
>>
>> -Kevin Neal
>>
>>
>>
>> -----Original Message-----
>> From: mikrotik-bounces at mail.butchevans.com
>> [mailto:mikrotik-bounces at mail.butchevans.com] On Behalf Of Randy
Cosby
>> Sent: Wednesday, October 22, 2008 4:36 PM
>> To: Mikrotik discussions
>> Subject: Re: [Mikrotik] nstreme dual
>>
>> All on one board, or using two separate boards?
>>
>> Kevin Neal wrote:
>>     
>>> We've been using equal cost OSPF routes, there's no redundancy with
>>> Nstreme Dual.
>>>
>>> -Kevin Neal
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: mikrotik-bounces at mail.butchevans.com
>>> [mailto:mikrotik-bounces at mail.butchevans.com] On Behalf Of Randy
>>>       
> Cosby
>   
>>> Sent: Wednesday, October 22, 2008 4:29 PM
>>> To: MikroTik at mail.butchevans.com
>>> Subject: [Mikrotik] nstreme dual
>>>
>>> Anyone using this successfully in 5.x frequencies?  What boards,
>>> cards, antennas, etc?
>>>
>>>
>>>
>>>       
>> --
>> Randy Cosby
>> Vice President
>> InfoWest, Inc
>>
>> office: 435-773-6071
>>
>>
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>>     
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