Network Configuration
65
Instruction Manual – DXLink™ Twisted Pair Transmitters/Receiver
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 169.252.x.x
link-local address space (again probing to ensure that it is unclaimed).
Once the module is operating with a link-local address, it will periodically re-try DHCP and re-assign the IP to a valid
DHCP grant if successful.
At any time, if the module determines that its IP address has changed, it will disconnect from the Master (if necessary,
depending on the connection state) and then reconnect to the Master.
TCP/IP Address Configuration
DXLink Modules support IPV4 network addresses, gateway addresses, DNS server addresses, and network names. They
also support NDP (NetLinx Discovery Protocol) capabilities as well as IP discovery via NetLinx Studio.
Note:
NDP is a device discovery method used by NetLinx Masters. With NDP Beacon enabled, the Master
will transmit NDP Beacons for AMX’s proprietary device discovery.
Telnet IP Configuration Commands
The
SET
IP
and
GET
IP
Telnet commands listed in the tables in Appendix B (which start on page 109) can be sent
directly to the device via a Telnet terminal session. These commands can be used for initial network configuration of the
DXLink Modules.
The default Telnet port is 23.
Telnet is enabled by default.
A value of 0 disables the telnet server.
For details, see “Appendix B – Telnet (Terminal) Commands” on page 108. The appendix also includes a section on
“Master Connection Modes” on page 116.
