Management and Configuration Guide Supplement 4.4.0.50

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Clock Synchronization
See “SSL Certificate—the SSL Tab” under the “Local Networks Setup” section
in Chapter 6 of the ProCurve Secure Access 700wl Series Management and
Configuration Guide for a description of this setting.
Clock Synchronization
Software version 4.4 changes how the 700wl Series manages clock synchro-
nization between the Access Control Server 740wl and the Access Controllers.
Accurate and synchronized time and dates across multiple units is especially
important. For example, if the date and time of the Access Control Server and
Access Controller are not synchronized, you may see negative values for a
client’s Idle Time in the Client Status display.
Previously, clock synchronization between Access Control Servers and
Access Controllers had to be performed manually, or was a function of all
devices using the same external NTP server. Now, by default, Access Control-
lers use the Access Control Server as the time source. You no longer need to
configure the date and time on each Access Controller, and synchronization
is assured.
The Access Control Server can get its time setting from an external NTP
server, or can be configured manually. If DHCP is running and is configured
with the NTP option for ntp-servers, the Access Control Server will update its
configuration to the NTP server specified in the DHCP server configuration,
and no manual configuration will be necessary. If the DHCP option is not
available, the date and time may be set manually, or an external NTP server
can be specified.
See “Setting the Date and Time” in Chapter 6 of the ProCurve Secure Access
700wl Series Management and Configuration Guide for a more detailed
discussion of date and time synchronization, especially if the 700wl Series is
in a redundant configuration, or the Access Control Server and Access Con-
trollers are widely separated where network latency may be an issue.