Dual Speed SFPs in 6850

devnull · Post by **devnull** » 07 Sep 2010 10:30

I try using a Dual Speed SFP in a 6850-P48L for connecting media converter (range and "no metal to the roof" matters).

So i bought two SFP-DUAL-MM but i do not get it to work:

Put into combo port 2 & for for connecting a cisco2960 (Port 1/2 1000full) and the Media Converter Port 4 (100full)

Code: Select all

-> show ni
Module in slot 1
  Model Name:                    OS6850-P48L,
  Description:                   48 10/100 POE,
  Part Number:                   902546-90,
  Hardware Revision:             02,
  Serial Number:                 XXXXXX,
  Manufacture Date:              APR 05 2007,
  Firmware Version:              ,
  Admin Status:                  POWER ON,
  Operational Status:            UP,
  Power Consumption:             95,
  Power Control Checksum:        0x96a0,
  CPU Model Type   :             Motorola MPC8248,
  MAC Address:                   00:e0:b1:6e:7a:6c,
  ASIC - Physical 1:             BCM56502_B2,
  ASIC - Physical 2:             BCM56504_B2,
  FPGA - Physical 1:             0019/00,
  UBOOT Version :                6.1.3.601.R01,
  UBOOT-miniboot Version :       6.1.3.601.R01,
  POE SW Version :               n/a
  GBIC  2
        Manufacturer Name:             FIBERXON INC.   ,
        Part Number:                   FTM-3413C-SL05G ,
        Hardware Revision:             10  ,
        Serial Number:                 XXXX ,
        Manufacture Date:              XXXX  ,
        Laser Wave Length:             1310nm,
        Admin Status:                  POWER ON,
        Operational Status:            UP

  GBIC  4
        Manufacturer Name:             FIBERXON INC.   ,
        Part Number:                   FTM-3413C-SL05G ,
        Hardware Revision:             10  ,
        Serial Number:                 YYYY ,
        Manufacture Date:              YYYY  ,
        Laser Wave Length:             1310nm,
        Admin Status:                  POWER ON,
        Operational Status:            UP

Running a 6.4.3 which should support that.

Code: Select all

-> show system 
System:
  Description:  Alcatel-Lucent OS6850-P48L 6.4.3.520.R01 GA, April 08, 2010.,
  Object ID:    1.3.6.1.4.1.6486.800.1.1.2.1.7.1.16,
  Up Time:      8 days 6 hours 23 minutes and 23 seconds,
  Contact:      Alcatel-Lucent, http://alcatel-lucent.com/wps/portal/enterprise,
  Name:         vxTarget,
  Location:     Unknown,
  Services:     72,
  Date & Time:  TUE SEP 07 2010  16:25:58 (CET)

Flash Space:
    Primary CMM:
      Available (bytes):  7994368,
      Comments         :  None

configured: speed at 1000full/100full

interfaces 1/2 hybrid FORCED-FIBER
interfaces 1/4 hybrid fiber speed 100

I get no link neither to the cisco nor to the media converter, switched RX/TX of the cable, no luck.

Any hints?

devnull · Post by **devnull** » 13 Sep 2010 05:17

Seems to have been an error on my side.

On sfp on the remote side (Cisco) was defect, and i had rx/tx wrong (which i did not know because of the broken sfp).

So i can now state:
Dual sfps work as expected.
"interfaces 1/4 hybrid fiber speed 100"
should put it in 100fx mode
speed 1000 (default) is for LX.

And remember LX 1310nm is not visible as it is with 850nm SX Modules.

corr_blimey_guvnor · Post by **corr_blimey_guvnor** » 15 Sep 2010 07:22

Good safety tip!

and remember kids, dont get looking down the fibre to see if you can see light at 1310nm, it will burn yout retina and cause blind spots!!!