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Cisco Bug: CSCvs53589 - SG-SVL:sutherlandTOtitan dad link will not link up after unplug GLCT+insert any fiber transc+GLCT

Last Modified

Aug 29, 2020

Products (1)

  • Cisco Catalyst 9600 Series Switches

Known Affected Releases


Description (partial)

Cat9500 High Performance or Cat9600switches running in Stackwise Virtual pair leveraging 1G copper transceiver [GLC-T or GLC-TE] as Dual Active Detection link might exhibit the symptom that DAD link that was originally in UP state does not come UP again if the following sequence of events is done
1) 1G copper transceiver is used for DAD link on interface X
2) 1G copper transceiver is removed from this interface and some other 10G/25G transceiver is inserted into the same interface
3) this new 10G/25G transceiver is removed and original 1G copper transceiver is installed back

after these events 1G copper transceiver used as DAD link on the same interface where it originally was in UP state will remain in DOWN state

Cat9500 High Performance SVL or C9600 SVL
GLC-T or GLC-TE used as DAD link
17.01.01 software release
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