I wish they (everybody) would do something different with cable glands
where the SFP slot is. You end up having to replace the cable gland
with a conduit fitting and build something to house the breakout. I
wonder if they should just put a cap over that SFP port, and then sell
an interconnect box as an accessory that can attach to it.
On 3/2/2016 9:56 AM, Andreas Wiatowski wrote:
We have been using fiber for our entire Telrad build….I do wish
Cambium would follow suit…..less the ridiculous practice of charging
to use a SFP port on the 650 for example. Vendors are a little light
on the fiber options…but I’m sure that will change. We are entirely a
Mikrotik routed environment….I do wish there was more predictability
with the fiber stuff…but it has come along way…and pricing is great.
We have close to 50+ CCR’s in the field and 2 CCR1072’s at our 2
Core’s… great value…and the product came out just in time……on to 40G? ;.>
Cheers,
______________________________
Andreas Wiatowski | CEO
Silo Wireless Inc.
Email andr...@silowireless.com
19 Sage Court
Brantford, Ontario N3R 7T4 (CANADA)
Tel +1.519.449.5656 Extension-600|Fax +1.519.449.5536 |Toll Free
+1.866.727.4138
*From:*Af [mailto:af-boun...@afmug.com] *On Behalf Of *Mike Hammett
*Sent:* Wednesday, March 2, 2016 9:47 AM
*To:* af@afmug.com
*Subject:* Re: [AFMUG] Mikrotik SFP+ 10GB
Make sure you tell that to your wireless vendors. :-)
-----
Mike Hammett
Intelligent Computing Solutions <http://www.ics-il.com/>
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
Midwest Internet Exchange <http://www.midwest-ix.com/>
<https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix>
The Brothers WISP <http://www.thebrotherswisp.com/>
<https://www.facebook.com/thebrotherswisp>
<https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
------------------------------------------------------------------------
*From: *"Andreas Wiatowski" <andr...@silowireless.com
<mailto:andr...@silowireless.com>>
*To: *af@afmug.com <mailto:af@afmug.com>
*Sent: *Wednesday, March 2, 2016 8:43:45 AM
*Subject: *Re: [AFMUG] Mikrotik SFP+ 10GB
Faisal,
Thanks for the great explanation.
And I agree, that every sfp module seems to have a different
“personality” in terms of strength. We have seen this in a number of
occasions with MM fiber. I have been buying my SFP modules from a
company in California called ROBOFIBER… the quality is good, and
pricing is not bad. I do use some Maxxwave, Mikrotik and Finisar as
well. In fact, I can’t believe how much we have started moving to
fiber over the past year…..times have certainly changed!
Cheers,
______________________________
Andreas Wiatowski | CEO
Silo Wireless Inc.
Email andr...@silowireless.com <mailto:andr...@silowireless.com>
19 Sage Court
Brantford, Ontario N3R 7T4 (CANADA)
Tel +1.519.449.5656 Extension-600|Fax +1.519.449.5536 |Toll Free
+1.866.727.4138
*From:*Af [mailto:af-boun...@afmug.com] *On Behalf Of *Faisal Imtiaz
*Sent:* Wednesday, March 2, 2016 1:47 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] Mikrotik SFP+ 10GB
Let me see if I can try to clear up some confusion and help in sorting
this out.
The optics, have TX and RX lasers... The TX will Transmit the Laser,
and RX will Receive the Signal.
You have the look at the MFG Specs to see what is the TX power and
what is the RX sensitivity.
Typically you need to have 5-7db of signal margin to have a link.
Now, each fiber connector has a 'Loss', each fiber cable has a signal
loss rating.... this is a figure you can ask the Dark fiber supplier
to provide to you...
Irrespective of whose fiber it is, when it was installed, or when a
contractor worked on splicing it, they would have produced a 'loss'
report.. e.g. 20 mile link is expected to have X db of Loss.
So, on paper, one would do the calculations as follows = TX signal -
Loss of all connectors and cable = RX Signal expected.
This RX Signal needs to be 5-7db higher than the RX Sensitivity figure
of that Optic module for a good solid link.
Now, no two modules put out the same power, or have the same
rx-sensitivity... there is always a certain amount of variation
Now, no two modules rated for the same distance from two different
mfg. have the same set of TX & RX Specs.
So it is ideal to have a light meter (you can get one for as low as
$50 from Ebay, Fiberstore etc, don't worry about having a cheap meter,
having one is better than having none).
This way one can measure the light coming out of the Optics and what
is being received from the far side.
One can use a relative test to measure loss across a cable (same
optics, via a device that read RX & TX signals, such as the CCR) to
determine that is the Loss on the cable end to end, based on this one
can determine if there is a possible problem on a particular set of
fiber cables.... and yes this can happen, for multitude of reasons,
but before you jump on the issue being on the actual fiber cable, do
test each jumper, clean each connector etc... cause most commonly such
issues can come from bad jumpers or a connector that is not seated
properly .
:)
Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232
Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net
<mailto:supp...@snappytelecom.net>
------------------------------------------------------------------------
*From: *"Andreas Wiatowski" <andr...@silowireless.com
<mailto:andr...@silowireless.com>>
*To: *af@afmug.com <mailto:af@afmug.com>
*Sent: *Tuesday, March 1, 2016 9:53:54 PM
*Subject: *[AFMUG] Mikrotik SFP+ 10GB
Wondering if anyone has guidance on what is an acceptable receive
power level that a CCR will report on an SFP. I currently have an
SFP+ module that is reporting a -18. This is a 40KM module…I
originally put in a 20KM module and it was reporting a -40. I was
getting only a one way link. The path I estimate is about 20KM
that I am linking…and I’m unsure of the quality of splicing…it is
dark fibre I have from a municipality…been running 1Gbps on 20KM
SFP’s until now.
Thanks!
Cheers,
______________________________
Andreas Wiatowski | CEO
Silo Wireless Inc.
Email andr...@silowireless.com <mailto:andr...@silowireless.com>
19 Sage Court
Brantford, Ontario N3R 7T4 (CANADA)
Tel +1.519.449.5656 Extension-600|Fax +1.519.449.5536 |Toll Free
+1.866.727.4138
