Here are some common causes of failure for radio links that are seemingly
good but fail periodically
1. If you're getting constant interference all through the day:
- It may be another radio nearby or even your own transmission on an
adjacent band
- It could also be a power supply issue, on some mikrotik boards so if
you're using 24v you may want to switch to a lower voltage (never
experienced this but a lot of people have reported it)
- Lastly it could be interference from a high power transmission on
another band e.g. a radio station
2. If it is a regular periodic failure (every few seconds) it may be a
radar system
3. If it is an irregular periodic problem then it may be an industrial
microwave oven
4. If this happens at the hottest or coldest time of day then it may be a
connector issue
5. If this happens when it is very windy then check your antenna mount or
look for trees and other obstructions in the path of your link
6. Now here's the craziest one I ever experienced - if your link crosses
a harbour you may be getting wiped out by a passing ship, ditto for
construction sites and cranes
This list is by no means exhaustive but will help to eliminate the most
common causes of periodic link failure
- - - - -
Olufemi Adalemo
Tel: +234-803-5610040
: +234-809-8610040
[email protected]
On Fri, Oct 7, 2011 at 2:28 PM, Eric Roth <[email protected]> wrote:
> Thanks guys for all the suggestions. I applied them yesterday and it is has
> to be interference of some sorts. It was good for a while and the issue
> cropped up again.****
>
> ** **
>
> --Eric Roth****
>
> Technology Specialist
> Webjogger Internet Services****
>
> (845) 757-4000****
>
> www.webjogger.net****
>
> ** **
>
> ** **
>
> *From:* [email protected] [mailto:[email protected]] *On
> Behalf Of *Dennis Burgess
> *Sent:* Thursday, October 06, 2011 2:58 PM
> *To:* WISPA General List
> *Subject:* Re: [WISPA] mikrotik issue.****
>
> ** **
>
> Extensive data loss means that you have tried to resend wireless frames,
> though the hw-retries, and its failed 3 times sequentially. On top of that
> you are already at the lowest data rate, therefore it disconnects due to
> extensive data loss. ****
>
> ** **
>
> *-----------------------------------------------------------
> **Dennis Burgess, Mikrotik Certified Trainer**
> **Link Technologies, Inc -- Mikrotik & WISP Support Services
> Office*: 314-735-0270 *Website*: http://www.linktechs.net
> *LIVE On-Line Mikrotik Training <http://www.onlinemikrotiktraining.com/> -
> Author of "Learn RouterOS" <http://routerosbook.com/>*****
>
> ** **
>
> *From:* [email protected] [mailto:[email protected]] *On
> Behalf Of *Eric Roth
> *Sent:* Thursday, October 06, 2011 1:30 PM
> *To:* 'WISPA General List'
> *Cc:* [email protected]
> *Subject:* [WISPA] mikrotik issue.****
>
> ** **
>
> I have a RB411 that continuously gets disconnected from the access unit
> with the following message in the log. It happens every couple of minutes.
> ****
>
> ** **
>
> disconnected, extensive data loss.****
>
> ** **
>
> Has anyone seen this before and have any suggestions on how to fix it?****
>
> ** **
>
> The signal strength is -64db and the client has an 18db gain yagi antenna.
> The cell is running n-stream and configured for 802.11b.****
>
> ** **
>
> Thanks****
>
> ** **
>
> --Eric Roth****
>
> Technology Specialist
> Webjogger Internet Services****
>
> (845) 757-4000****
>
> www.webjogger.net****
>
>
>
>
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