SFP+ DAC cable, HP J9281B and RB5009

RouterOS General
1

Dear all!

I am got happy when I realised that my Aruba 1930 8g Instant On had 2 SFP+ ports and my new RB5009UPr+S+IN also had an 10G SFP+ port.
First I tried with a “generic” Mikrotik SFP+ cable (H!Fiber) - this was detected by the RB5009 but not the Aruba Switch..
Searching the internet I found out that HPE has a different coding/firmware on the DAC cable (did I understood this right?) - so I found a HPE original cable, a J9281B.

With this Cable the Aruba Switch detects the cable, but not the RB5009..

Have tried various settings, Auto Negotiation on/off - advertise 10G etc - I can not get it to work at 10G speed.
Turning off Auto Negotiation I can get 10M, 100M and 1G to work (full duplex) but NOT 10G..

I have tested RouterOS 7.9.1, 7.9.2 and 7.10rc5 - nothing gets it running at 10G.

My RB5009 “sees” the cable, as per below:

Vendor Name WL GORE
Vendor Part Number SCN-2002-2
Vendor Revision D
Vendor Serial CN1335JXXX
Manufacturing Date 11-08-20

I am at loss.. Anyone with experiance of interconnecting HPE SFP+ with Mikrotik?

2

I have same issue with DAC cable from CCR to HPE Aruba switch.

On MikroTik side, on interface it says:

  • “no link”
  • visible voltage, temperature etc.
  • RX packets are coming
  • TX packets is zero

Any solution?

 /interface/ethernet/monitor sfp-sfpplus2
                    name: sfp-sfpplus2
                  status: no-link
      sfp-module-present: yes
             sfp-rx-loss: yes
            sfp-tx-fault: yes
                sfp-type: SFP/SFP+/SFP28
      sfp-connector-type: LC
     sfp-link-length-om1: 30m
     sfp-link-length-om2: 80m
     sfp-link-length-om3: 300m
         sfp-vendor-name: FS
  sfp-vendor-part-number: SFPP-PC01
     sfp-vendor-revision: 10
       sfp-vendor-serial: G2230267383-1
  sfp-manufacturing-date: 22-10-07
          sfp-wavelength: 850nm
         sfp-temperature: 39C
      sfp-supply-voltage: 3.28V
     sfp-tx-bias-current: 0mA
         eeprom-checksum: good
                  eeprom: 0000: 03 04 07 10 00 00 00 00  00 00 00 06 67 00 00 00  ........ ....g...
                          0010: 08 03 00 1e 46 53 20 20  20 20 20 20 20 20 20 20  ....FS           
                          0020: 20 20 20 20 00 00 1f 22  53 46 50 50 2d 50 43 30      ..." SFPP-PC0
                          0030: 31 20 20 20 20 20 20 20  31 30 20 20 03 52 00 7e  1        10  .R.~
                          0040: 00 1a 00 00 47 32 32 33  30 32 36 37 33 38 33 2d  ....G223 0267383-
                          0050: 31 20 20 20 32 32 31 30  30 37 20 20 68 f0 03 ea  1   2210 07  h...
                          0060: 48 50 a0 00 80 50 20 20  4a 39 31 35 30 41 20 31  HP...P   J9150A 1
                          0070: 39 39 30 2d 34 30 36 35  20 20 00 32 00 00 00 00  990-4065   .2....
                          0080: ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  ........ ........

in toch interface, there are visible UDP packets (broadcast IP’s etc.)

3

I have that one working at 10G with CRS317-1G-16S+ and HP 2530-48G-2SFP+ J9855A using auto negotiation at both ends: https://www.amazon.de/dp/B09HHCPYHX

For CRS317-1G-16S+ to Aruba Instant On 1930 24G PoE 4SFP/SFP+ 370W JL684A Switch I am using Mikrotik XS+DA0001 using auto negotiation at Mikrotik and “Physical Mode = 10 Gbps Full Duplex” at the Aruba (there is no Auto selection).

The 10GTek identifies as:
sfp.png

4

RESOLUTION for me - on SFP interface disable ethernet auto negotiation and set fixed speed (10G)

5

Resolution for me in two steps.

After to much trial and error I realised that the Aruba 1930 8P switch only has SFP (1G), not SFP+ (10G).. The 24P and 48P has SFP+ and I just overlooked it..

Second resolution, I bought an equivalent Mikrotik Switch - all works as expected now, got an Aruba SW over..