How to get more info about HwIfInDiscards in ethtool output?

  • 21 January 2017
  • 2 replies

"ethtool -S swp1" says that HwIfInDiscards counter is non-zero and growing.
What can be root cause? Is detailed explanation available for that?

2 replies

Userlevel 1
I have once faced this issue. The reason was that port on switch was missing VLAN tag, which was configured on connected server. This caused switch to drop all frames, tagged with that vlan, thus increasing discard counter you mentioned.
Userlevel 5
There are a lot of causes for this error, many will vary by platform. Recommend opening a support case to further troubleshoot your specific platform.