DAD AX32, Руководство пользователя

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User Manual AX32
Doc no. AX32-8002-A-4 Rev. date 140124 Page 22 of 31
Let’s have a look at how this works in real life, using an AX32 as an example. The following is a screenshot
from the DADman software showing how to set the IP address of the AX32.
On the left-hand side you will find the network settings of the AX32 itself. On the right-hand side you will
find the network settings for the Dante Audio over IP module, if it is installed in the AX32.
If you look at the AX32 settings, the first choice is between “Obtain an IP address automatically” or “Use
the following IP address”. If you choose “Obtain an IP address automatically”, the AX32 will be assigned an
IP address, Subnet mask and Default gateway automatically by a DHCP-server, if a DHCP-server is present
on the network.
If you instead choose “Use the following IP address” you must enter the IP address, Subnet mask and
optionally Default gateway.
“IP address” is obviously the IP address of the unit.
“Subnet mask” is used to determine which devices are on the same subnet. Devices on the same subnet
can communicate directly with each other whereas devices on different subnets can only communicate
through a router.
“Default gateway” is an optional parameter. Default gateway is the IP address of the router which would
allow the AX32 to communicate with a device on another subnet. There is no need to provide a Default
gateway if the AX32 does not need to communicate with devices on other subnets.
So which IP address should you choose? If you use a DHCP-server, then it’s most likely already configured
and you don’t need to worry about it. If you don’t have DHCP-server, you will need to choose IP addresses.
IP addresses consist of 4 bytes (numbers), usually written with a decimal point between them, e.g.
192.168.0.1. This means IP address can range from 0.0.0.0 to 255.255.255.255, giving a total of approx.
4.3 billion addresses. The IP addresses are however reserved for different purposes, so for example some are
public (i.e. used on the Internet) and other are private (i.e. only used on local networks). In order to avoid
any problems, it is best to use the addresses reserved for private use, which are:
10.0.0.0 to 10.255.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255
The subnet mask is necessary to identify which addresses are on the same subnet, and which are outside
the subnet. A subnet mask of e.g. 255.255.255.0 means that all IP addresses where the first 3 numbers are