12-26-2023 06:09 AM
Why c9300x with C9300X-NM-4C doesn't work with 100gb sfp? speed sets automatically to 40G and 100G only works after upgrading to 17.13. It's very strange because I knew about it only after testing different firmware (with 17.9.4a 100g doesn't work too)
Solved! Go to Solution.
12-27-2023 06:57 AM - edited 12-27-2023 06:59 AM
TAC said it's true, 100g supports only from 17.13, before only supports 40g. It doesn't depend on 40/100 module or just 100
12-26-2023 07:11 AM - edited 12-26-2023 07:11 AM
Hello @dijix1990
Do you check here you exact sfp model versus the IOS minimum recommended ?
https://tmgmatrix.cisco.com/?si=C9300X-NM-4C
12-26-2023 07:21 AM
Of course it's qsfp-40/100-srbd
12-26-2023 07:19 AM
- Are you using compatible SFP(s) according to Cisco Optics-to-Device Compatibility Matrix
M.
12-26-2023 07:25 AM
Yes it's qsfp-40/100-srbd
12-26-2023 09:35 AM
- Sometimes latest firmware is needed ,
M.
12-26-2023 09:56 AM
Totally agree wirh you @marce1000
12-26-2023 04:49 PM
It's weird because there is no information that 100g sfp need new software and I knew about it through some tests. According to matrix qsfp-40/100-srbd works from 17.5, but I use 17.9.4a
12-26-2023 10:57 AM
what is the model of full switch - as i know C9300X-NM-4C module works only certain models.
what QSFP you using ?
12-26-2023 04:46 PM
C9300x-24y, qsfp-40/100-srbd
12-26-2023 04:59 PM
Are the optics Cisco-branded?
12-27-2023 12:46 AM
yes it's cisco original qsfp28 QSFP-40/100-SRBD. only with firmware 17.13 I can set speed 40 or 100
c9300x-01(config)#int Hu1/1/1
c9300x-01(config-if)#spe
c9300x-01(config-if)#speed ?
100000 Force 100000 Mbps operation
40000 Force 40000 Mbps operation
for firmware version 17.9.4a I don't set speed because of c9300x doesn't have this command
12-27-2023 01:41 AM
@dijix1990 wrote:
yes it's cisco original
I recommend you consider buying 3rd party optics and compare the experience.
12-27-2023 01:44 AM
I have 100G from fs.com and it has the same behaviour before 17.13 it doesn't work))
12-27-2023 03:28 AM
If the optics is in the switch, post the complete output to the following commands:
sh interface <PORT>
sh idprom interface <PORT>
sh log | i Hu
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