Hi,

thanks @all for help and offers.

I was thinking of changing the polarity but the cable which I got from my provider lacks that possibility. It looks like it is glued together.

Well, it WAS glued together - I broke it and plugged the LC connectors into the SFP. Now guess what: the darn thing is up and running!

Am I too naive to expect a E2E test done by provider is reliable? Do I have to expect to break the connector and switch the polarity so that I can use that thing?

Frustrated, Andre

On Tue, 2015-11-17 at 13:57 +0100, Andreas Fink wrote:

things to know:

Your device has one SFP (1G only) and one SFP+ port (10G)

1. I'm not 100% sure but I think the SFP+ port is 10G only on this

model. So be sure to use the 1G only port. On the CCR1072 I know it's 10G or 1G but you have to put auto-negotiation to off and set the rate to 1G manually to get 1G on a 10G port. Otherwise you will see light and link but the other side see's nothing. For a 1G port, use auto negotiation.

2. the web interface returns wrong values for rxpower in RouterOS

6.33 as they changed some API to it but didn't update the Web GUI for it. The command line value is ok however. Its fixed in current 6.34 release candidate. In my case I got like 4 billion watts of light power indicated which would convert my tiny little router in an atomic reactor in the size of our sun if it would be correct.

3. Your system says no-link which sounds to me like no incoming

light. Are you sure the patch cable is of correct type and orientation? try swapping RX/TX

...

On 17 Nov 2015, at 13:20, Andre Timmermann < andre.timmermann@darkt.im> wrote:

Hello,

I recently bought a Mikrotik CR1009-8G-1S-1S+. I added a Mikrotik S -31DLC20D SFP module to connect my internet uplink. The uplink provider confirmed that the uplink should be working with wavelength 1310 nm, single mode, 1GBit, no auto negotiation.

Unfortunately the webinterface shows "no link". Firmware is 6.33 and I rebooted the device - still no link.

Please note that I do NOT get a value for sfp-rx-power in the webinterface or the following dump. Is that a hint that the fiber is not OK or is that conclusion invalid?

/interface ethernet monitor 9 name: sfp1 status: no-link auto-negotiation: disabled sfp-module-present: yes sfp-rx-lose: yes sfp-tx-fault: no sfp-type: SFP-or-SFP+ sfp-connector-type: LC sfp-link-length-9um: 20000m sfp-link-length-50um: 550m sfp-link-length-62um: 550m sfp-vendor-name: Mikrotik sfp-vendor-part-number: S-31DLC20D sfp-vendor-revision: A0 sfp-vendor-serial: MT50617H2074 sfp-manufacturing-date: 15-06-24 sfp-wavelength: 1310nm sfp-temperature: 50C sfp-supply-voltage: 3.237V sfp-tx-bias-current: 21mA

this is how mine looks: /interface ethernet> monitor 9 name: sfp1 status: link-ok auto-negotiation: done rate: 1Gbps full-duplex: yes tx-flow-control: no rx-flow-control: no advertising: link-partner-advertising: sfp-module-present: yes sfp-rx-lose: no sfp-tx-fault: no sfp-type: SFP-or-SFP+ sfp-connector-type: copper-pigtail sfp-link-length-copper: 3m sfp-vendor-name: Molex Inc. sfp-vendor-part-number: 74743-0021 sfp-vendor-revision: A sfp-vendor-serial: 131330080 sfp-manufacturing-date: 10-11-09 _______________________________________________ swinog mailing list swinog@lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog