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Switch: Cisco 2960G 24x 1G ports and 4x 10G SFP

SFP fiber module: 10Gtek AXS13-192-10

NIC: Solarflare SFN7122F

I got a new to me switch, after resetting to factory defaults I got it all configured for a very basic setup to just work off the serial console connection. I got my router plugged in and any of the 24 RJ45 ports work to connect any computer.

When I first tried to plug in the SFP module I got errors saying it wasn't an official module and the port was disabled.

So I got in puTTY and did the

no errdisable detect cause gbic-invalid

service unsupported-transceiver

Now it doesn't pop up with disabled errors but it doesn't seem to recognize the port as being plugged into my computer. How do I get it to work? There are a lot of pages of people saying these SFP modules work so I just need to figure out how to make it so.

ports connected

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    Those are SFP (1G) ports, not SFP+ (10G).
    – Ricky
    Oct 31 '21 at 3:58
  • How about this one? You think its any good? unixsurplus.com/cisco-nexus-switch-n7k-m224xp-23l or you know any cheap models that have 10g
    – rasmukri
    Oct 31 '21 at 4:21
  • Sorry, resource recommendations are explicitly off-topic here, see the help center.
    – Zac67
    Oct 31 '21 at 6:50
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    You do realize that's a BLADE for a CHASSIS? (your inability to do research is not our problem.)
    – Ricky
    Oct 31 '21 at 7:08
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    My bad I posted the wrong link, but that's not allowed anyway it seems.
    – rasmukri
    Oct 31 '21 at 14:44
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Switch: Cisco 2960G 24x 1G ports and 4x 10G SFP

SFP ports are 1G. 10G ports should be marked SFP+.

Running a 10G SFP+ module in an SFP slot is generally only possible when the module is explicitly marked 1G compatible and if the switch doesn't mind - most do.

no errdisable detect cause gbic-invalid
service unsupported-transceiver

These commands disable the rejection of non-Cisco transceivers (enable generic MSA) but cannot make incompatible modules work magically.

Also, you need to make sure that the NIC accepts its SFP+ module as well.

Both transceivers need to be using the same Ethernet variant (both 10GBASE-LR or both 10GBASE-SR). Your photo shows a multi-mode patch (looks somewhat orange) connected to the AXS13-192-10 transceiver which uses 10GBASE-LR over single-mode fiber (yellow). MMF might work for short range but will fail for longer ranges or when combined with SMF.

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  • Thanks for that it seems I thought I saw SFP+ when I bought it but I guess not. Also perhaps your screen needs the color adjustment, that cable that's plugged into the SFP port is yellow. All my ports are single mode and I have only yellow single mode cables. I did buy a 1m orange one before I knew the difference in single and multi so I'm returning that but everything else is all single mode.
    – rasmukri
    Oct 31 '21 at 14:45

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