Reviewer: Colin Perkins Review result: Ready with Nits This document has been reviewed as part of the transport area review team's ongoing effort to review key IETF documents. These comments were written primarily for the transport area directors, but are copied to the document's authors and WG to allow them to address any issues raised and also to the IETF discussion list for information.
When done at the time of IETF Last Call, the authors should consider this review as part of the last-call comments they receive. Please always CC [email protected] if you reply to or forward this review. The document updates RFC 4944 to provide a selective fragment recovery scheme for 6LoWPAN networks. It builds on draft-ietf-6lo-minimal-fragment and on the virtual reassembly buffers described in the expired draft draft-ietf-lwig-6lowpan-virtual-reassembly. The mechanism is generally well described and clearly specified. My main concern is that the performance of the mechanism will heavily depend on the values selected for the parameters described in Section 7.1, but there is little guidance provided on how to set these parameters for particular link layers. The draft would be improved if it could point to some more detailed guidance on parameter choice for particualar scenarios, or to further discussion on how to estimate parameters. Nits: Section 1, 3rd paragraph, typo: "[RFC4944] as no selective recovery and the whole datagram fails when" -> "has no"? Section 7.1: Description of OptFragmentSize refers to MinFragmentSize _______________________________________________ 6lo mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lo
