Intel 480T, User Manual

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C H A P T E R 3 Accessing the Switch
63
Configuring and Using SNTP
To use SNTP:
1 Identify the host(s) that are configured as NTP server(s).
Additionally, identify the preferred method for obtaining NTP
updates. The options are for the NTP server to send out broad-
casts, or for switches using NTP to query the NTP server(s)
directly. A combination of both methods is possible. You must
identify the method that should be used for the switch being
configured.
2 Configure the Greenwich Mean Time (GMT) offset and Day-
light Savings Time preference. NTP updates are distributed
using GMT time. To properly display the local time in logs
and other timestamp information, the switch should be config-
ured with the appropriate offset to GMT based on geographi-
cal location. Table 14 describes GMT offsets.
Table 14: Greenwich Mean Time Offsets
GMT
Offset in
Hours GMT
Offset in
Minutes
Common Time Zone
References
Cities
+0:00 +0 GMT - Greenwich Mean
UT or UTC - Universal
(Coordinated)
WET - Western European London, England; Dublin,
Ireland; Edinburgh, Scotland;
Lisbon, Portugal; Reykjavik,
Iceland; Casablanca, Morocco
-1:00 -60 WAT - West Africa Azores, Cape Verde Islands
-2:00 -120 AT - Azores
-3:00 -180 Brasilia, Brazil; Buenos Aires,
Argentina; Georgetown,
Guyana;
-4:00 -240 AST - Atlantic Standard Caracas; La Paz
-5:00 -300 EST - Eastern Standard Bogota, Columbia; Lima, Peru;
New York, NY, Trevor City, MI
USA