Wireless Settings Page - Wireless Access Overview; Ip Routing; Hot Swapping - AMX Modero NXD/NXT-1200VG Operation/Reference Manual

Configuring Communication

Wireless Settings Page - Wireless Access Overview

IP Routing

The behavior of the wireless routing is largely dependent on the wired network interface. Although the panel
can be connected to two networks simultaneously it may only have one gateway. If the wired network was
successfully set up and a gateway was obtained; then the default route for all network traffic will be via the
wired network. In the event that the wired network was not configured, then the default route for all network
traffic will be via the wireless network. The wired network connection always takes priority.
As an example: Imagine a panel connected to two networks A & B. A is the wired network and B is the
wireless network. If the Master controller is on either of these networks then it will be reached. However if the
Master controller is on a different network, C, then determining which network interface (wired or wireless)
that will be used is dependent on the gateway.

Hot Swapping

Hot swapping is not an issue on these panels as the card is installed within the unit and cannot be removed
without first removing the housing.
In the case of DHCP, there must be a DHCP server accessible before the fields are populated.
If the SSID (Network Name) and WEP fields have not previously been configured, the
Wireless Settings page will not work until the panel is rebooted.
Ethernet Communication from the panel can be direct (using an Ethernet cable) or indirect (through the
optional NXA-PCI80211G AMX Wireless Card (FG2255-04) communicating to a Wireless Access Point such
as the NXA-WAP200G). In determining the Ethernet method of communication, the panel will always default
first to the direct Ethernet communication. If no direct connection is detected, the panel will first check to see
if there is an installed wireless interface card and then communicate to the WAP using the Wireless Settings
assigned within the Wireless Settings page. The WAP communication parameters must match those of the pre-
installed wireless interface card installed within the panel.
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Wireless Access Points are the cornerstone of any wireless network. A Wireless Access Point acts
as a bridge between a wired and wireless network. It aggregates the traffic from all the wireless
clients and forwards it down the network to the switch or router. One Wireless Access Point may be
all you need. However, you could need more Wireless Access Points depending on either how large
your installation is, how it is laid out, and how it is constructed.
Wireless Equivalent Privacy (WEP) Security is a method by which WLANs protect wireless data
streams. A data stream encrypted with WEP can still be intercepted or eavesdropped upon, but the
encryption makes the data unintelligible to the interloper. The strength of WEP is measured by the
length of the key used to encrypt the data. The longer the key, the harder it is to crack.
802.11b implementations provided 40-bit and 104-bit WEP keys. This is known respectively as 64-
bit and 128-bit WEP encryption. 64-bit is generally not regarded as adequate security protection.
Both key lengths are supported by the Modero product line. Whichever level of WEP you use, it's
crucial to use identical settings (CASE SENSITIVE)--the key length, and the key itself-- on all
devices. Only devices with common WEP settings will be able to communicate. Similarly, if one
device has WEP enabled and another doesn't, they won't be able to talk to each other. Although the
calculations required to encrypt data with WEP can impact the performance of your wireless
network, it's generally seen only when running benchmarks, and not large enough to be noticeable
in the course of normal network usage.
VG-Series Modero Touch Panels