Chapter 36: Clock Synchronization Protocol
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 987
minpoll = 6
maxpol = 7
versio = 4
PacketCable requires that the maximum interval between consecutive attempts to synchronize the C4/c CMTS local
time of day clock must not exceed one hour. Therefore, NTP.MAXPOLL must not exceed 11 (that is 211 or 2048
seconds, which equals approximately 34 minutes). The CLI command configure ntp maxpoll <4 … 11> has a default
value of 7. Also, the new CLI command configure ntp minpoll <4 … 11> sets the default minimum polling interval in the
same way, where minpoll is strictly less than or equal to maxpoll.
4. Configure the time zone:
When no parameter is given (or invalid input is detected), this command enters interactive mode. In interactive mode,
a list of available canonical time zone (TZ) names is displayed based on a given country name or ISO-3166 country
code. The local TZ name may then be selected by line number from the displayed list of TZ names for that country.
In the example that follows, the time zones for the USA are requested.
configure clock timezone
The following response is returned:
Enter country name or 2 letter code: US
1. US +404251-0740023 America/New_York Eastern Time
2. US +421953-0830245 America/Detroit Eastern Time - Michigan - most locations
3. US +381515-0854534 America/Kentucky/Louisville Eastern Time - Kentucky - Louisville area
4. US +364947-0845057 America/Kentucky/Monticello Eastern Time - Kentucky - Wayne County
5. US +394606-0860929 America/Indiana/Indianapolis Eastern Time - Indiana - most locations
6. US +384038-0873143 America/Indiana/Vincennes Eastern Time - Indiana - Daviess, Dubois,
Knox & Martin Counties
7. US +410305-0863611 America/Indiana/Winamac Eastern Time - Indiana - Pulaski County
8. US +382232-0862041 America/Indiana/Marengo Eastern Time - Indiana - Crawford County
9. US +382931-0871643 America/Indiana/Petersburg Eastern Time - Indiana - Pike County
10. US +384452-0850402 America/Indiana/Vevay Eastern Time - Indiana - Switzerland County
11. US +415100-0873900 America/Chicago Central Time
12. US +375711-0864541 America/Indiana/Tell_City Central Time - Indiana - Perry County
13. US +411745-0863730 America/Indiana/Knox Central Time - Indiana - Starke County
14. US +450628-0873651 America/Menominee Central Time - Michigan - Dickinson, Gogebic,
Iron & Menominee Counties
15. US +470659-1011757 America/North_Dakota/Center Central Time - North Dakota - Oliver
County
16. US +465042-1012439 America/North_Dakota/New_Salem Central Time - North Dakota - Morton
County (except Mandan area)
17. US +471551-1014640 America/North_Dakota/Beulah Central Time - North Dakota - Mercer
County
18. US +394421-1045903 America/Denver Mountain Time
19. US +433649-1161209 America/Boise Mountain Time - south Idaho & east Oregon
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