This is a contributor review of draft-ietf-opsawg-discardmodel-09.  Overall, I 
found the draft in pretty good shape.  The authors have done a great job 
incorporating feedback.  I do have a few suggestions, and I found a couple nits.

Wouldn’t invalid-frame and invalid-packet encompass CRC errors and checksum 
errors?  Prior to introducing the YANG data model, you address that 
frames/packets cannot be double-counted, but I think it would be beneficial to 
add some mention of that to the IM.  Maybe in the description of the invalid-* 
you explicitly state these count frames/packets other than when a CRC or 
checksum error has been detected.

In the IM, you have a feature for flow-reporting, but you do not include this 
in the DM.  Why?  I would imagine this feature might be used by certain 
vendors’ implementations to reflect per-flow drop statistics.  And having a 
common feature defined, even if not immediately used by this module could be 
useful.

Nits:

In Section 3, expand “pps”.

In Section 3, maybe s/crucial for selecting the appropriate of 
mitigation/crucial for selecting the appropriate type of mitigation/

Joe
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