Error IO Module "etherNiErrStats crcDelta"

[Alexey Shurov]

IO Module generate error "TCA: etherNiErrStats crcDelta for sys/chassis-1/slot-2/fabric/port-1 , current-value = 67, raised above esc value 5"

Firmware version 3.1(2f)

Ports FI do not have error.

Thanks.

[Kirk J]

Greetings.

From the FI on that side run the following:

nxos#show int count error

nxos#show hardware internal carmel counters interrupt | egrep "(statistics|mtu_vio)"

Looking to see which direction the CRC counters are being detected, RX or TX, and on which interfaces.  We get a lot of cases for these thresholds being triggered when customers will modify vswitch MTU to allow jumbo frames, but don't accommodate the larger frame size at the UCSM QOS class level for MTU.

Thanks,

Kirk...

[Alexey Shurov]

Hello,

I have attached screenshot.

Eth 1/2 it's Uplink Port FI

Eth 1/3 and Eth 1/4 it's IO Module Port.

Thanks.

[Wes Austin · Accepted solution]

Looks like you are recieving quite a bit of CRC errors on Eth1/2. I would investigate whatever switch connects to that interface to see where the errors are coming from and/or swap the cable/SFP to rule out layer 1 issue.