Specifications

Network Configuration

ICSLan Device Control Boxes

Network Configuration

Overview

EXB modules support two IP addressing modes: Static IP, and DHCP (with link-local fallback).

By default, EXB Modules are set to DHCP Mode.

The modules can be configured for either of these modes via two methods:

The front-panel ID Pushbutton (see the Toggling Between Static and DHCP IP Addressing on

page 14).

Telnet command (see the Terminal (Telnet) Commands on page 53).

Default Parameters For Static IP Mode

DHCP Mode

When in DHCP mode (the default setting), the module will attempt to get a DHCP lease (consisting of IP

address, gateway, and other network parameters). Should it fail to obtain a lease from a DHCP server, it will

then configure itself for a link-local address.

EXB 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 EXB module.

If 169.254.2.2 is already claimed, the EXB 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 operating with a link-local address, the device will periodically re-try DHCP, and re-assign the IP to a

valid DHCP grant if successful.

At any time, if the device 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

EXB modules support IPV4 network addresses, gateway addresses, DNS server addresses, and network name.

EXB modules support Nexus Discovery Protocol (NDP) capabilities as well as IP discovery via NetLinx

Studio.

"Link-Local Fallback" is a method by which an IP host can derive a local network-

unique IP address, by negotiating with the other IP hosts on the same network, as a

fallback from DHCP. Link-Local can also be used in its own right as the primary

method of IP address allocation. See "DHCP Mode" below for details.

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

NDP stands for "NetLinx Discovery Protocol", a device discovery method used by

NetLinx Masters. With NDP Beacon enabled, the Master will transmit NDP beacons

for AMX's proprietary device discovery.