Re: [Idr] Alexey Melnikov's No Objection on draft-ietf-idr-shutdown-08: (with COMMENT)

[Job Snijders <[e-mail]>]

On Mon, May 22, 2017 at 07:28:01AM -0700, Alexey Melnikov wrote:
> Alexey Melnikov has entered the following ballot position for
> draft-ietf-idr-shutdown-08: No Objection
> 
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
> 
> In Section 2:
> 
>    Shutdown Communication:  to support international characters, the
>       Shutdown Communication field MUST be encoded using UTF-8.  A
>       receiving BGP speaker MUST NOT interpret invalid UTF-8 sequences.
>       Note that when the Shutdown Communication contains multibyte
>       characters, the number of characters will be less than the length
>       value.  This field is not NUL terminated.
> 
> I think you should stick a reference to RFC 5198, which talks about
> subset of UTF-8 intended for human consumption.

Oh, that is a great reference! Thanks.

How about adding: """For interoperability and consistent text display,
the Shutdown Communication field SHOULD be normalized as recommended in
"Unicode Format for Network Interchange" [RFC5198]."""

Resulting in the following:

NEW:

    Shutdown Communication:  to support international characters, the
        Shutdown Communication field MUST be encoded using UTF-8.  A
        receiving BGP speaker MUST NOT interpret invalid UTF-8
        sequences. For interoperability and consistent text display, the
        Shutdown Communication field SHOULD be normalized as recommended
        in "Unicode Format for Network Interchange" [RFC5198]. Note that
        when the Shutdown Communication contains multibyte characters,
        the number of characters will be less than the length value.
        This field is not NUL terminated.

> I was also thinking about language tagging (RFC 5646) for human
> readable text, but I suspect that nobody will implement it in your
> extension.

That would be extremely unlikely indeed.

Kind regards,

Job