[j-nsp] Interface tail drops vs. ifOutDiscards

[Antti Ristimäki]

> ifOutDiscards counter seems to include packets dropped by RED, at least
> in MX series. In our case the ifOutDiscards counter is most of the time
> equal to jnxCosIfqTotalRedDropPkts given that all the dropped packets
> were in the same forwarding class.

In fact, I just noticed that the behaviour seems to differ between Trio and DPC cards. In DPCs RED drops seem to be included in ifOutDiscards but in MPCs not. This was just a very quick analysis, so I might be wrong, though.

Antti