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Cisco Bug: CSCvi82402 - Doppleback (N9k-C9364C) Autoneg fails for 100gig ports 49-64 when used with QSFP-100G-CR4

Last Modified

Apr 26, 2018

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

7.0(3)I7(1)

Description (partial)

Symptom:
Doppleback (N9k-C9364C) Autonegotiation does not work for 100gig on ports 49-64 when used with QSFP-100G-CR4 cables.

This issue can also happen with following type of hardware:

 N9K-X9736C-FX (Line Card)
 N3K-C36180YC-R (Chassis)
 N3K-C3636C-R (Chassis)

Conditions:
Bringing up 100 gig links on port 49-64 of Nexus 9364C switch with autonegotiation enabled with QSFP-100G-CR4 cables.
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