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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