User`s guide

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TCP/IP Network Basics
IP Address Configuration Methods
Dynamic Host Configuration Protocol (DHCP)
Dynamic Host Configuration Protocol (DHCP) allows each host on the
network to be automatically assigned a unique IP address when the device
is connected to a network that supports DHCP and is turned ON.
To enable DHCP on a Site LAN, the System Administrator assigns a pool
of IP addresses to a
DHCP Server to be leased to hosts on the network.
Each host on the network is called a
DHCP Client.
Auto-IP/ZEROCONF
Auto-IP/ZEROCONF can be used to automatically assign IP addresses on
networks that do not have DHCP Servers. Auto-IP is a defacto standard for
IP address allocation implemented by Microsoft and Apple. ZEROCONF is
an Internet standard (RFC) that is currently under development and is
expected to be widely implemented in Linux, Windows, etc. Auto-IP and
ZEROCONF are similar techniques for IP address allocation and can
interoperate together.
Both Auto-IP and ZEROCONF allocate IP addresses from the link-local IP
address range (169.254.xxx.xxx). The addresses are allocated using an
ARP-based protocol to determine is the desired address is already in use.
Auto-IP and ZEROCONF can both be used such that DHCP is tried first and
then Auto-IP/ZEROCONF are used after DHCP times out (typically after
about 45 - 60 seconds).
Check your instrument’s
User’s Guide to determine if the instrument
supports Auto-IP/ZEROCONF and, if supported, if Auto-IP/ZEROCONF
can be disabled.
Duplicate IP Address Detection
Duplicate IP address detection ensures that an instrument does not attempt
to start operation using an IP address that is already in use on that network.
Duplicate IP Address detection provides basic diagnostic information to
identify a problem on the network.
Duplicate IP Address detection is described by several Internet standards
(RFC 2642/RFC 2131/ZEROCONF). It is implemented using ARP (Address
Resolution Protocol) and uses broadcast Ethernet communication. The
scope of duplicate IP address detection is the current Ethernet subnet.
Most operating systems (Windows, Apple, etc.) implement duplicate IP
address detection.