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sebus46
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[SOLVED] RB4011 + FINISAR CORP SFP = no-link

Sat Jun 17, 2023 5:43 pm

FTLF8524P2BNV-BR

I previously used RB2011 with same transceiver to connect to D-Link DGS-1210-16 (using identical module)

Had no issue. I expected RB4011 to carry on this setup

But while the light shows in the transceiver, and the transceiver is recognized, I simply get no-link
                      name: sfp1
                    status: no-link
          auto-negotiation: done
               advertising: 
  link-partner-advertising: 
        sfp-module-present: yes
               sfp-rx-loss: no
              sfp-tx-fault: no
                  sfp-type: SFP-or-SFP+
        sfp-connector-type: LC
       sfp-link-length-om1: 70m
       sfp-link-length-om2: 150m
           sfp-vendor-name: FINISAR CORP.
    sfp-vendor-part-number: FTLF8524P2BNV-BR
       sfp-vendor-revision: A
         sfp-vendor-serial: U9G28NJ
    sfp-manufacturing-date: 06-04-21
            sfp-wavelength: 850nm
           sfp-temperature: 45C
        sfp-supply-voltage: 3.315V
       sfp-tx-bias-current: 7mA
              sfp-tx-power: -4.492dBm
              sfp-rx-power: -4.732dBm
           eeprom-checksum: good
                    eeprom: 0000: 03 04 07 00 00 00 01 20  40 0c 15 01 2a 00 00 00  .......  @...*...
                            0010: 0f 07 00 00 46 49 4e 49  53 41 52 20 43 4f 52 50  ....FINI SAR CORP
                            0020: 2e 20 20 20 00 00 90 65  46 54 4c 46 38 35 32 34  .   ...e FTLF8524
                            0030: 50 32 42 4e 56 2d 42 52  41 20 20 20 03 52 00 d2  P2BNV-BR A   .R..
                            0040: 00 32 00 00 55 39 47 32  38 4e 4a 20 20 20 20 20  .2..U9G2 8NJ     
                            0050: 20 20 20 20 30 36 30 34  32 31 20 20 68 d8 01 d7      0604 21  h...
                            0060: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ........ ........
                            *
                            0080: 5f 00 e7 00 5a 00 ec 00  98 58 69 78 90 88 71 48  _...Z... .Xix..qH
Anybody any idea how to tackle it?

sebus
Last edited by sebus46 on Tue Jun 20, 2023 10:43 am, edited 1 time in total.
 
sebus46
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Re: RB4011 + FINISAR CORP SFP = no-link

Tue Jun 20, 2023 10:42 am

Had to change Speed from AUTO to manual 1Gb FD on both ends

While auto worked on RB2011 (ROS 6.48.x), it did not on RB4011 (RB 7.xx)

sebus
 
mbovenka
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Re: [SOLVED] RB4011 + FINISAR CORP SFP = no-link

Tue Jun 20, 2023 2:55 pm

SFPs in an SFP+ (such as the 4011 has) cage need fixed speed & duplex, as you found out. That is documented somewhere, but it's somewhat hidden. I've been bitten by that too. The 2011 has an SFP cage, which is why that worked with AUTO.