Packets bigger than 1522 bytes (as counted by Spirent Test Center) are being forwarded (bridged) but not counted in the following hardware counters on an Open Network Linux device:
I can't find anything in any of the following documents that excludes large frames from these counters in the following documents:
- 802.3.1 - Management Information Base (MIB) Definitions for Ethernet
- rfc-1643 - Definitions of Managed Objects for the Ethernet-like Interface Types
- rfc-2233 - The Interfaces Group MIB using SMIv2
- rfc-2863 - The Interfaces Group MIB
The following counters are incremented for these frames:
There are also some nonstandard counters capturing the above per direction, but none that separate bcast/ucast/mcast.
Am I missing something, or are the counters not working as we'd normally expect?