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All switches in the fabric maintain the current clock server IP address in
non-volatile memory. By default, this value is LOCL, the local clock server of the
Principal (when FCS is not enabled) or Primary (when FCS is enabled) switch.
Changes to the clock server value on the Principal or Primary switch are
propagated to all switches in the fabric.
When a new switch enters the fabric, the time server daemon of the principal or
primary FCS switch sends out the addresses of all existing clock servers and the
time to the new switch. If a switch with v5.3.0 or later has entered the fabric it will
be able to store the list and the active servers; switches running Fabric OS versions
earlier than v5.3.0 will ignore the new list parameter in the payload and will
update only the active server address.
If the active NTP server configured is IPv6, then distributing the IP address in the
fabric will not be possible to switches earlier than Fabric OS v5.3.0 because IPv6 is
supported for Fabric OS v5.3.0 and later. The default value LOCL will be
distributed to switches earlier than Fabric OS v5.3.0.
The tsClockServer command accepts multiple server addresses in IPv4, IPv6, or
DNS name formats. When multiple NTP server addresses are passed,
tsClockServer sets the first obtainable address as the active NTP server. The rest
are stored as backup servers that can take over if the active NTP server fails. The
principal or primary FCS switch synchronizes its time with the NTP server every
64 seconds.
Setting the date
1. Log into the switch using the default password, which is password.
2. Enter the date command, using the following syntax:
date ""mmddHHMMyy""
The values represent the following:
v mm is the month; valid values are 01 through 12
v dd is the date; valid values are 01 through 31
v HH is the hour; valid values are 00 through 23
v MM is minutes; valid values are 00 through 59
v yy is the year; valid values are 00 through 99 (values greater than 69 are
interpreted as 1970 through 1999, and values less than 70 are interpreted as
2000-2069)
switch:admin> date
Fri Aug 26 12:29:46 UTC 2011
switch:admin> date "0826123011"
Fri Aug 26 12:30:00 UTC 2011
switch:admin>
Setting the time zone
You must perform the procedure on all switches for which the time zone must be
set. However, you only need to set the time zone once on each switch, because the
value is written to nonvolatile memory. Use one of the two following procedures
to set the time zone. The first procedure requires you to select the actual time zone
and the second requires you to select the country location of the switch.
The following procedure describes how to set the current time zone to Central
Standard time using timezonename mode.
Chapter 2. Installing and configuring the switch
17
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