Instruction manual

Network Configuration
64
Instruction Manual – DXLink™ Twisted Pair Transmitters/Receiver
Network Configuration
Overview
DXLink Modules support two IP Addressing Modes: Static IP and DHCP (with link-local fallback*).
To avoid having a large system consume numerous IP addresses, the Transmitter and Receiver default to disabling the
network connection functionality. Therefore, the #3 Toggle must be set to ON before the Transmitter or Receiver can
establish a network connection (see page 45).
When #3 Toggle is ON, the DXLink Modules are automatically placed in DHCP Mode, but they can be configured for
either of the IP Addressing Modes via two methods:
The front-panel ID Pushbutton (see page 68)
Telnet commands (see page 107)
* “Link-local fallback” is a method by which an IP host, as a fallback from DHCP, can derive a local network-unique IP
address by negotiating with the other IP hosts on the same network. Link-local can also be used in its own right as the
primary method of IP address allocation. For details, see “DHCP Mode” below.
Static IP Mode – Default Parameters
Important: Static IP Mode will not function until the #3 Toggle on the DIP switch is set to ON (see page 45).
The #3 Toggle must
be ON before the device is accessible via SEND_COMMANDs.
DHCP Mode
Important: DHCP Mode will not function until the #3 Toggle on the DIP switch is set to ON (see page 45). The
#3 Toggle must be ON before the device is accessible via SEND_COMMANDs.
DHCP Mode requires a connection to a network with a DHCP server located on it. This connection can be either indirect
or direct.
Indirect connection – In the case of an Enova DGX Digital Media Switcher or an Enova DVX Solution
(Endpoint Mode) that is connected to a DHCP server device, the DHCP connection can be propagated
through the system’s DXLink layer. First you must complete the following:
Set the #3 Toggle to ON to enable the network connectivity.
Direct connection – In the case of a standalone pair (Extender Mode), to place the DXLink Modules in DHCP
Mode you must complete the following:
Set the #1 Toggle to ON to enable access to the physical ICS LAN 10/100 port.
Set the #3 Toggle to ON to enable network connectivity (DHCP).
Connect the ICS LAN 10/100 port to a network where a DHCP server is located.
When in DHCP Mode (the default setting), the module will attempt to get a DHCP lease (consisting of an IP address,
gateway, and other network parameters). Should the attempt fail, the module will then configure itself for a link-local
address.
DXLink Modules utilize a modified link-local addressing procedure. The first address to be tried is a known
address in the link-local space: 169.254.2.2. That address will be probed, and if unclaimed will be used by
the DXLink Module.
If 169.254.2.2 is already claimed, the DXLink Module will choose a random address within the 169.254.x.x
link-local address space (again probing to ensure that it is unclaimed).
Default Parameters For Static IP Mode
Address 192.168.1.2
Netmask 255.255.255.0
Gateway 192.168.1.1
DNS1 192.168.1.1
DNS2 192.168.1.1
DNS3 192.168.1.1