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Cisco Bug: CSCvt81620 - Links flap between two 9300 switch post applying CTS Manual configuration.

Last Modified

Aug 24, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

16.6.6

Description (partial)

Symptom:
Directly connected link will flap after configuring CTS manual on the interfaces.


HKT: %LINK-5-CHANGED: Interface GigabitEthernet1/1/1, changed state to administratively down

Conditions:
When two C9300-24 switches connected directly.

When the below configuration has done on the interfaces.

!
interface GigabitEthernet1/1/1
switchport mode trunk
switchport nonegotiate
cts manual
  no propagate sgt
  sap pmk 0000000000000000000000000000000000000000000000000000000012345678 mode-list gcm-encrypt null no-encap
end
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