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CSCwj16930 - 9800-M unable to connect to 25G port to Nexus 9K Switch

sro
Level 1
Level 1

‎09-25-2024 01:26 AM

When can we expect a bugfix for this 25G problem ?

1 person had this problem
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marce1000
Hall of Fame
Hall of Fame

‎09-25-2024 01:38 AM

 

 - By definition you must forward the question to TAC. This group is only for customers , discussing experiences with bugs,

 M.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '
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4DigitCCIE
Level 1
Level 1

‎10-21-2024 01:13 PM - edited ‎10-21-2024 01:16 PM

In our case I was able to configure the FEC on the Nexus side to " fec rs-ieee" or " fec rs-cons16" and the interface comes up and works.  This info didn't come from TAC - I was just experimenting, but I do still have a case open to find out whether the Nexus or the WLC is at fault for the FEC autonegotiation issue and which of the two FEC modes they recommend.

andrew_cooper
Level 1
Level 1
In response to 4DigitCCIE

‎04-18-2025 10:32 AM

Did you ever get an update from TAC?  Trying to bring a new pair online and I'm assuming we're hitting this.  I tried both fec modes you mentioned with no impact.  I will say we are using the CU3M cables which actually are not in the supported table.  But I would assume they are supported.  The table lists the CU1M and CU5M and they show supported in the WLC when plugged in.  We are connecting to N9K-C93180YC-FX3

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