I am looking for some help regarding the SFP modules the Omnia supports.
My provider delivers fiber straight to my home that I can use with a compatible SFP module.
I have found the following specs:
1000Base-BX
Tx 1310nm, Rx 1550nm
WDM Fiber
SC connector
With all these different specifications I am at a loss which module I need and then which would be compatible with the Omnia.
Is there a compatible module available for the Omnia? if so could someone please link me the product page?
First of all, it has to be compatable with your media type…as you don’t disclose it and my crystall ball is gone missing, it is hard to give any useful advice…
AFAIK such SFP module does not exist, from BX…I only know 1000BASE-BX10, which is quite specific:
Single-mode fiber, single-strand: 1,480 to 1,500 nm downstream, 1,260 to 1,360 nm upstream
So your chosen module won`t work…if it is really “BX10” as vawelength is quite different for upstream…
Anyway, what I would recommend is Finisair modules, they would have least compatibility issues…and are widely supported…
As I have not recieved my Omnia it it is the best advice that I can currently give…
And we are using 1000Base-LX…here for GE…
BX40 in one of the two configurations seems to match it but up to 40km seems a bit powerful.
Cisco GLC-BX40-U-I would be withing specs but comes with some hefty price tag.
Modules for the other side would be:
GLC-BX40-D-I (1550/1310)
GLC-BX40-DA-I (1490/1310)
Both are possible as GLC-BX40-U-I has a 1480 to 1600 nm Receiver.
still matching and cheaper
TP-Link’s TL-SM321B seems to match your specifications. TL-SM321A is its companion if they gave their RX and TX. The correct cable (LC to SC) should be simple to get.
Edit: Mikrotik’s pair of modules seems to match this too but it is not specified if they are BX or something proprietary. They like to hide everything they can hide. pun indented
Hi,
first of all - I think your provider should tell you which SFP you should use, especially with such non-standard configuration. I believe you’ve actually provided all the necessary information, but it’s a totally unusual SFP, I have to admit I’ve never seen one like it - I’ve used WDM few times, but always with one LC connector. SC is very rarely used on SFPs (it’s simply too big, it was used on SFP predecessor - GBIC).
So… the SFP must have one SC connector, transmitting/receiving is done over single fibre using wavelength division multiplex, the keywords are WDM or BiDi (bidirectional). Wavelengths (including the tx/rx) must also match, SFP is transmitting using 1310nm and receiving on 1550nm (so on the providers end there is device transmitting using 1550nm and receiving on 1310nm). I also suppose it’s a single mode fibre, based on those values (…).
I think something like this could do the trick, but you should really check with your provider. Also the compatibility with omnia is unsure (I believe it should work, but I’m not 100% sure… anyone else?). In case of order make sure to mention that you need Tx1310nm/Rx1550nm version.
Your provider could ease your pain by changing the connector to LC, then you will have much more options - for instance (again, I believe it should work with Omnia, but I’m not sure) 1000Base-BX WDM Bi-Directional SFP Module TL-SM321B from TP Link.
or you can just buy something like this to “change” the connector by yourself:
When it comes to BX modules we haven’t tested them yet. But I am not expecting any big issues.
Just try to plug the (proper sided) module in and we will see. If it does not work please post your module details here or create a support ticket by sending an e-mail to tech.support@turris.cz . We might also need you to dump the SFP EEPROM - which is easy, you can do it simply by typing a command i2cdump 5 0x50 and capturing the output.
Radim, could you describe your initial problem and what you did to fix it? My router can’t get any incoming package and link is flapping. I tried 2 SFPs: TP-Link TL-SM321B and Lightwin LSFP-WDM-LA20-UNI, both don’t work.
I can’t see any possibility for SFP to get some hidden sw update because it requires expensive device.
That TP LINK you mentioned seems “quite the same” I got in my Turris now.
BX solo fiber, same wavelenght.
My SFP didnt initialy even start (light) the WAN port LED.
I didnt go into logs as I was busy…
I did connect Turis via copper on my Microtic router to start using it…
Few days fast forward and I did try to connect my ADAC BX SFP once again and bingo - it works now.
Should I “blame” Turris sw auto update (???) - most likely.
It works now flawlesly. (so may be no sfp fw update would be neccessary for you)
I have noticed the same issue with my Turris - doesnt get any incoming data when connected via optical SFP. Connection parameters: ethernet type 1000BASE-BX3 (BiDi, 3km), Tx1310nm, Rx1550nm, SC connector, single fiber, SPF module APSB35123CDS3, optical switch H3C S3600-28F-EI at the ISP side. Now using temporarily media converter…
I have tried to use the standard Ethernet SFP (cooper) in turris and it worked fine…
Based on the “i2cdump 5 0x50” Turris detects the module, but nothing else… any idea?
