[ntpwg] NTP WG Last Call:draft-ietf-ntp-ntpv4-proto-10.txt

[David L. Mills]

Danny,

The easy way to see this is to assume the delays are zero and the B 
clock runs faster than the A clock.

Dave

Danny Mayer wrote:

> Dave,
>
> No, I really meant the discussion on P.30 which confuses me (sorry for 
> the misdirection):
> "In some scenarios where the initial frequency offset of the client is
>    relatively large and the actual propagation time small, it is
>    possible for the delay computation to becomes negative.  For
>    instance, if the frequency difference is 100 PPM and the interval
>    T4-T1 is 64 s, the apparent delay is -6.4 ms. "
>
> That's what I really didn't understand. Not something to hold up the 
> document of course.
>
> Danny
>
> David L. Mills wrote:
>
>> Danny,
>> I think you mean the formula on p. 29
>>
>> delta = T(ABA) = (T4-T1) - (T3-T2)
>>
>> This is the first mention of T4 in a formul. That formula is correct.
>>
>> Dave
>>
>> Danny Mayer wrote:
>>
>>> I have reviewed the document and believe it's ready for advancement. I
>>> have a couple of nits (mainly word corrections) below but I that
>>> shouldn't hold up advancement.
>>>
>>> P17. Figure 6
>>> VERSION should be described as "NTP version number" (add NTP)
>>>
>>> P17. Section 7.3. First paragraph
>>> Last word refers to the RFC as a report. Replace "report" with "RFC".
>>>
>>> P26 Section 8 Paragraph 2
>>> At end of paragraph please add the sentence "Any other non-allocated
>>> multicast address may also be used in addition to these allocated
>>> multicast addresses.
>>>
>>>
>>> P26 Section 8 first full paragraph at top of page
>>> This doesn't look quite right to me. If (T4-T1) is 64 seconds that's a
>>> huge delay in getting a response. Is this right or am I 
>>> misunderstanding
>>> the whole paragraph?
>>>
>>> P56. Section 16.
>>> Replace the following:
>>> "IANA is requested to establish and maintain a registry for Extension
>>> Field Types associated with this protocol, populating this registry 
>>> with
>>> no initial entries."
>>> with:
>>> "IANA is requested to establish and maintain a registry for Extension
>>> Field Types associated with this protocol, populating this registry
>>> reserving Field Types 0-7 for the autokey protocol (see RFC xxxx)."
>>>
>>> or is that done with the Autokey protocol document?
>>>
>>> Danny
>>> _______________________________________________
>>> ntpwg mailing list
>>> ntpwg at lists.ntp.org
>>> https://lists.ntp.org/mailman/listinfo/ntpwg
>>
>>
>>
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>