Per the PMP450 Operators Manual and numerous threads on this forum, it appears that PMP450* are not returning accurate ethernet and discard errors via if*Errors and if*Discards. Cambium is communicating that the correct objects are fec*ErrorsCount and fec*DiscardsCount respectively, which violates rfc2863 which Cambium is claiming to adhere to via IF-MIB.
This means that all operators who currently have PMP450s (presumably impacting other PMP versions/models as well) deployed and are using any modern NMS (LibreNMS in our case) to poll these devices are completely blind to accurate ethernet error and discard metrics, which is critical information in diagnosing a variety of specific cases of issues.
Please correct this, a lot of operators who pay good money for your radios expect to have day 1 metrics like this properly served up for their monitoring purposes. Thanks!