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helenio
Beginner

Nexus 1000V duplex mismatch and interface suspended

Hello,

I noticed a strange behavior, sometimes interfaces on N1K goes in suspended status

sv4025-01# sh interface ethernet 17/18

Ethernet17/18 is down (suspended)

and on the cisco switch where is connected I have duplex mismatch

111233: Aug 28 11:20:12.819: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on TenGigabitEthernet1/6 (not half duplex), with sv4025-01.ti.ch(1298652659127955650) Ethernet17/18 (half duplex).

I have some questions:

interface goes in suspended state due to the duplex mismatch ?

How can I have duplex mismatch on 10G interface, as from my knowledge you can't have half duplex on 10G ?

1 REPLY 1
Joe LeBlanc
Cisco Employee

Hi Helenio,

Can you please let us know which version you are running and some insight into the topology? What device is N1k running on and what is the upstream switch?

Thanks,

Joe

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