[ntp:questions] Is a packet with stratum 1 allowed to contain a KoD code?

Danny Mayer mayer at ntp.org
Mon Jul 26 04:15:11 UTC 2010


That was the point I was trying to make. I wasn't making any statements
about the reference implementation though since he didn't he didn't tell
us what the server was running and he was asking a general question.


On 7/25/2010 1:42 PM, David L. Mills wrote:
> Danny,
> KoD packets have the leap bits set to 3 (unsynchronized); the stratum is
> not signficant. The reference implementation sets the stratum to 16 for
> the RATE kiss code. However, packet stratum 16 is mapped to stratum 0 as
> visible to the monitoring function. Codes like INIT and STEP are used as
> labels for associations and used only for monitoring purposes.
> Dave
> Danny Mayer wrote:
>> On 7/19/2010 8:43 AM, Christer Eriksson wrote:
>>> Hi,
>>> Is an NTP packet with stratum set to 1 ever allowed to contain a kiss of
>>> death code? I got a server (NTPv4) that sends NTP packets with stratum 1 and
>>> KoD codes like INIT or STEP and I fail to find a confirmation in any RFC
>>> relating to version 4 of NTP whether this is allowed or not.
>> See RFC5905 Section 7.4 for KOD packets. This has nothing to do with
>> Stratum. Why would you assume that Stratum 1 is somehow exempt? INIT and
>> STEP are just states of the server and it is instructing the client that
>> it is not yet ready to deliver accurate timestamps.
>> Danny
>>> Thanks & Best Regards
>>> Christer Eriksson
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