Dhcp/Bootp Auto-Configuration - Symmetricom ND-CLK User Manual

DHCP/BOOTP Auto-Configuration

DHCP (Dynamic Host Configuration Protocol) is a mechanism for automating the
configuration of networked devices that use TCP/IP. When DHCP is enabled, DHCP
configuration acquisition will overwrite any manual configuration items. A precursor to
DHCP is BOOTP. The network clock can obtain configuration from a BOOTP server
when no DHCP server is present. Factory default: DHCP enabled.
The following RFC2132-defined optional configuration items are, when available, used
by the network clock for configuration purposes:
Option
Time Offset
Router
Domain Name Server
Network Time Protocol Server
[Important Note: A network clock will not function properly if configured to use
DHCP services when no DHCP server is present on the network.]
Device Name/DHCP Name Registration
All ND network clocks can be provided with a device name. By default, device names
are the product name abbreviation followed by the last octet of the device's Ethernet
address (MAC address). If a DHCP server is available on the network when the ND
clock is installed, the unit will be auto-registered with the DHCP server. The network
system administrator can then view this DHCP name registration and the currently
assigned IP address, at the DHCP server.
The user or network system administrator may wish to designate device names relating to
their own organizational requirements. It is recommended that a robust naming scheme
be developed before devices are installed to different locations within an organization.
The device name may be changed from the factory default name by entering a unique
name of up to 32 characters. [Hint: You can change the device name to one convenient
for your site – preferably one that helps you to later identify the exact physical location of
the device. Up to 32 character device names are supported]
[Note: The IP address of the unit is required to configure the ND clock with Telnet.]
[Helpful Hint: The DHCP server can be utilized to provide the IP address of the
associated device name that is registered. ]
ND-CLK User Manual- Rev 1.0.1 - Sep-08
No.
2 The value provided will be used for the time zone offset configuration,
unless it is defined as zero in which case it will be ignored and the
network clock will rely on internal configuration. Note: this option does
not provide information appropriate for dynamic daylight savings time
use.
3 The first IP address provided will be used for router/gateway
configuration.
6 Up to two server IP addresses may be specified. Network clock will
treat addresses as primary and secondary DNS servers.
42 Up to two server IP addresses may be specified. Network clock will
treat addresses as primary and secondary NTP servers.
8
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