Wednesday, September 15, 2021

Unable to get a 100BASE-T SFP in a Cisco 3850 to come up

Hello!

I am unable to get a 100base-t SFP to come up in a 3850 switch.

When inserted I get the error: %PLATFORM_PM-6-MODULE_ERRDISABLE: The inserted SFP module with interface name Gi1/0/4 is not supported

What am missing?

Thank you for your help!

Details:

- Using a Cisco compatible SFP from FS.com - SFP-FB-GE-T
- I have confirmed that I have ran the commands to use a non Cisco SFP:
(config)# no errdisable detect cause gbic-invalid
(config)# service unsupported-transceiver
- sh inv shows we have other 100M SFPs installed, but not a 100BaseT: NAME: "Gi1/0/1", DESCR:
"10/100/1000BaseTX SFP" NAME: "Gi1/0/7", DESCR: "100BaseFX SFP" NAME: "Gi1/0/10", DESCR:
"100BaseFX SFP" NAME: "Gi1/0/13", DESCR: "1000BaseSX SFP" NAME: "Gi1/0/16", DESCR:
"1000BaseSX SFP" NAME: "Gi1/0/19", DESCR: "100BaseFX SFP" NAME: "Gi1/0/24", DESCR:
"10/100/1000BaseTX SFP"
- IOS 16.09.06 - Port compatibility shows:
GigabitEthernet1/0/4
Model: WS-C3850-24S
Type: unknown
Speed: 10,100,1000,auto
Duplex: full,half,auto



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