Interface output error

[suneq]

Hi all, 

We are facing a slowness issue for many servers connecting to our ACI fabric, it seems that there is some packet loss.

When we checked the interfaces connecting to the servers, we saw many output errors/drops

We read the following article:

 https://www.cisco.com/c/en/us/support/docs/cloud-systems-management/application-policy-infrastructure-controller-apic/210539-Explanations-of-Packet-Drop-Faults-in-AC.html

and found that

If we understood correctly it talked about input drops, but how about output drops? What can cause output errors/drops (we checked the bandwidth but it was fine)?

Any advice will be highly appreciated.

[joezersk]

Hello.  In APIC, are you seeing this fault? F119936

If yes, then it is likely cosmetic.  Check the link below for further detail.

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/1-x/troubleshooting/b_APIC_Troubleshooting/b_APIC_Troubleshooting_appendix_011010.html

[suneq]

Hi joezersk,

Thank you for the interesting information. However, I do not see that fault in the APIC.

Do you have any other ideas?

Thanks.