Link to home
Start Free TrialLog in
Avatar of pfpoulsen
pfpoulsen

asked on

Fiber connection between BlackBox Media Converter and Procurve GiBIC

Hi all

I need to connect some procurve fiber GiBICs with some blackbox media converters.
The GiBIC is J4859C and the blackbox converter is
http://www.blackbox.dk/da-dk/fi/984/11645/XS-1000-Converter/All
LMCS212AE-SC10-R2 (single-mode model)

But i can't get any link between those two devices and i can't understand why.

I'm using single-mode patch cable 9/125 with LC connections in one end and SC connections in the other end, no link.. And I have tryied to cross the RX and TX.

If I connect two GiBICs directly with a patch cable 9/125 with LC connecters in both ends i get link so GiBICs is working with 9/125 single-mode cable.

If i connect two media converters with 9/125 SC connecters in both ends i get link, so the media converters also work with 9/125 singe-mode cable.

Why can i get any link between the GiBICs and the Media Converters? Any ideas?

Best Regards, Steffen
Avatar of SEWS-E
SEWS-E
Flag of United Kingdom of Great Britain and Northern Ireland image

Hi,

Have you tried setting the speed and duplex settings manually on both devices?

Kind regards,

Paul
SOLUTION
Avatar of eeRoot
eeRoot

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of TimotiSt
Do you have any logs from the switch?
Also, check if UDLD (keepalive) is enabled on the switch, the mediaconverter won't support that.

Tamas
Avatar of pfpoulsen
pfpoulsen

ASKER

Hi

1) It's not possible to setup the duplex settings on the modules at the swtich. The media conveter is not manageable, so not settings here either.

2) Yes I've tried to flip the SC connectors
And I have tryied to cross the RX and TX.

3) No i have not checked any keepalive settings. Is the command something with ULDLD onprocurve OS? Should there be no-keppalive?

Best Regards.
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=120&prodSeriesId=1827663&prodTypeId=12883&objectID=c01978780

I've just tested it both with and without link-keepalive enabled. Default it was not enabled. Still no link between the media converter and the switch module.
I'm testing with a 3 meter patch cable so the distance should not be a problem in this case .. :)
That may be a problem: the LX lasers are optimised for long distance. A too short cable might be an issue: the signal strength does not drop enough, and the receiving end gets a too strong signal. It's usually recommended to use an optical attenuator for short-distance use.
I'm not sure that's the problem in your case, but I don't have a better idea at the moment. Do you have a spare, say 100m patch cord lying around, for test purposes? :)
ASKER CERTIFIED SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
We never find find a complete solution.