Re: draft-ietf-mboned-driad-amt-discovery

Yup. I like it.

Go for it.

Bill

On 2019-06-14 11:39 p.m., Holland, Jake wrote:
> Hi Bill,
>
> For most of the responses, I take your suggestions as written, but one
> I'll propose a tweak, because I still think s/should/SHOULD/ isn't
> quite right in paragraph 1 of 2.5.6, though you do have a point that
> it refers to DNS so it can't be from RFC 7450. (Sorry about that mistaken
> claim.)
>
> 1.
> On 2019-06-14, 17:43, "William Atwood" <[email protected]>
> wrote:
>> For para 1, while the DNS-SD restriction is in 7450, the AMTRELAY RRType
>> is introduced in this document, so this is a new requirement.
>> Therefore, I believe that the "should" must be a "SHOULD".
>
> Paragraph 1 of 2.5.6 says:
> A gateway should only send DNS queries with the AMTRELAY RRType or
> the DNS-SD DNS queries for an AMT service as part of starting or
> restarting the discovery process.
>
> I think the construct "SHOULD only" is weird, because really I'm
> expressing
> an expectation that a thing won't happen.
>
> However, "SHOULD NOT send unless" is also a bit weird, because it's not
> exactly forbidden to send DNS to keep history or something.
>
> This line of reasoning led me to realize that this paragraph is actually
> just completely unnecessary, so how about I cut it instead of changing
> should to SHOULD?
>
> OLD:
> 2.5.6. Relay Discovery Messages vs. Restarting Discovery
>
> A gateway should only send DNS queries with the AMTRELAY RRType or
> the DNS-SD DNS queries for an AMT service as part of starting or
> restarting the discovery process.
>
> However, all AMT relays are required to support handling of Relay
> Discovery messages (e.g. in Section 5.3.3.2 of [RFC7450]).
>
> So a gateway with an existing connection to a relay can send a Relay
> Discovery message to the unicast address of that AMT relay. Under
>
> NEW:
> 2.5.6. Relay Discovery Messages vs. Restarting Discovery
>
> All AMT relays are required to support handling of Relay
> Discovery messages (e.g. in Section 5.3.3.2 of [RFC7450]).
>
> So a gateway with an existing connection to a relay can send a Relay
> Discovery message to the unicast address of that AMT relay. Under
>
>
> 2.
> Reviewing this section made me notice one other spot with a similar issue,
> so I'm also changing "recommended" to "RECOMMENDED" in the last paragraph
> as well, if there are no objections:
> OLD:
> process. It is recommended for gateways to support the L flag, but
> for gateways that do not support the L flag, sending this message
> during event #3 may help mitigate service degradation when relays
> become unstable.
>
> NEW:
> process. It is RECOMMENDED for gateways to support the L flag, but
> for gateways that do not support the L flag, sending this message
> during event #3 may help mitigate service degradation when relays
> become unstable.
>
>
>
> Thanks much, and please let me know if these edits work for you.
>
> Best regards,
> Jake
>
>

-- 
Dr. J.W. Atwood, Eng.             tel:   +1 (514) 848-2424 x3046
Distinguished Professor Emeritus  fax:   +1 (514) 848-2830
Department of Computer Science
   and Software Engineering
Concordia University EV 3.185     email:[email protected]
1455 de Maisonneuve Blvd. West    http://users.encs.concordia.ca/~bill
Montreal, Quebec Canada H3G 1M8

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