Last Call Review of draft-ietf-softwire-iftunnel-04
review-ietf-softwire-iftunnel-04-genart-lc-worley-2019-05-05-00

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Document:  draft-ietf-softwire-iftunnel-04
Reviewer:  Dale R. Worley
Review Date:  2019-05-05
IETF LC End Date:  2019-05-07
IESG Telechat date:  [not known]

Summary:

       This draft is ready for publication as a Standards Track RFC.

Nits/editorial comments: 

   Editorial Note (To be removed by RFC Editor)

This section is a great idea.  I haven't seen this usage before.

   Please update the "revision" date of the YANG modules.

This sentence doesn't say what to update the revision date to.

   1.  Introduction

   This document specifies the initial version of the iana-tunnel-type
   YANG module identifying tunnel interface types.

This could be made more specific, e.g.,

   This document specifies the initial version of the iana-tunnel-type
   YANG module containing a collection of IANA maintained YANG
   identities identifying tunnel interface types.

--

   2.  IANA Tunnel Type YANG Module

   The initial version of the module includes tunnels types defined in
   [RFC4087], [RFC7856], [RFC7870], and [RFC6346].

s/tunnels types/tunnel types/

Should this mention the provenance of IP-HTTPS, which is in none of
these RFCs?

     identity iphttps {
       base ift:tunnel;
       description
         "IP over HTTPS (IP-HTTPS) Tunneling Protocol.";
       reference
         "Microsoft Corporation, IP over HTTPS (IP-HTTPS) Tunneling
          Protocol Specification,
          https://msdn.microsoft.com/en-us/library/dd358571.aspx";
     }

This type's reference doesn't appear in the list of references.

   3.  Security Considerations

   These identies are intended to be
   referenced by other YANG modules, and by themselves do not expose any
   nodes which are writable, contain read-only state, or RPCs.

Logically, this is correct, but I think it would read better if
s/contain read-only state/contain readable state/.

   4.1.  YANG Module

   The name of the "identity" is the same as the corresponding
   enumeration in the IANAifType-MIB (i.e., IANAtunnelType).

This should be "... is the lower-case of the corresponding enumeration
...".

   "base":        Contains the name assigned to the tunnel type, in
                  lowercase.

The description of this item should be "Contains 'ift:tunnel'.".

   6.2.  Informative References

   [TUNNELTYPE-IANA-REGISTRY]
              Internet Assigned Numbers Authority, "tunnelType
              Definitions", <https://www.iana.org/assignments/smi-
              numbers/smi-numbers.xhtml#smi-numbers-6>.

Given that this document specifies substantial interaction with this
registry, this reference should be normative.

The title of this reference cannot be "tunnelType Definitions",
because that text does not appear in either the referenced URL or the
IANA assigned numbers index (https://www.iana.org/protocols).  The
title of the entire web page is "Structure of Management Information
(SMI) Numbers (MIB Module Registrations)"; the title of the section
that is referenced is "Internet-standard MIB -
mib-2.interface.ifTable.ifEntry.ifType.tunnelType", which is a
subsection of the section titled "ifType definitions".  There is no
reference to the section from the IANA assigned numbers index.

Comparing with this passage from section 4.1

      They must instead be respectively added to the
      "tunnelType" sub-registry (under the "ifType definitions"
      registry).

suggests the title "ifType definitions:  tunnelType" may be in
informal use.

[END]