Cisco Nesus 300 Series Port Block

[nazim@circlenetworkbd.net]

Dear,

Thanks in advanced.

I am face some problem in Cisco Nexus 3000 series Switch.

The port status showed (dcxNoAcki) this message. After the port is shut and no shut , port status is connected.

Now What can i do? wait for a feedback please.

Nazim

[Peter Paluch · Accepted solution]

Hi Nazim,

The DCX stands for Data Center Extensions, and it is an extension to the LLDP protocol to negotiate additional Data Center Bridging Extensions and their features between interconnected devices. A part of the exchange is a continuous "ping" process between the connected devices where one device polls the other, and the other device has to acknowledge that poll. This occurs every 30 seconds, and if no response is received in 100 such polls, the interface is error-disabled.

I suggest reading the following document carefully:

https://www.cisco.com/c/en/us/support/docs/switches/nexus-5000-series-switches/116249-troubleshoot-nexus-00.html

If shutting down and reenabling the interface resolved the problem, I recommend simply observing the interface. If the issue repeats again, it will be necessary to both check the configuration of the attached device, and likely start performing more involved troubleshooting to understand why the neighboring device does not respond to the polls sent by the switch.

Best regards,
Peter