Grass Valley NVISION Compact CQX - Manual (Page 21)

Compact Router System Configurator • User’s Guide 9
2. Before Using CRSC
Creating a Network
Figure 2-1 shows a sample network of routers with remote panel modules.
Figure 2-1. Sample Network
You can create multiple CRSC networks. CRSC can detect and manage all networks as long as two
conditions are met:
• Each network is defined as a distinct subnet.
• Your configuration PC has enough network connections to support the different subnets.
What is a Subnet?
A subnet is an identifiably separate part of an organization's network that allows a single large net-
work to be broken down into smaller ones. Typically, a subnet may represent all the machines at
one geographic location or on the same local area network (LAN). All CR Series routers and con-
trol panels must be on a separate subnet from any CQX routers and control panels. However,
devices must be on the same subnet to communicate with each other. For example, a router can
only receive commands from a control panel on the same subnet.
What is a Subnet Mask?
A subnet mask is the technique used by the IP protocol to create a subnet address. Or, to put it
another way, a subnet mask is a screen of numbers used for routing traffic within a subnetwork. In
CRSC, the subnet mask is typically: 255.255.255.0. The subnet masks need not be 255.255.255.0,
but if it differs, the frame address range will be something other than 1–254.
What is an IP Address?
An IP address is a 32-bit number given by four 8-bit values (octets) separated by periods:
192.168.2.87 (for example). The number is comprised of a subnet and a frame address. Each net-
work must be a distinct subnet in CRSC and CR Series routers and CR Series panels must be on a
separate subnet from CQX routers and CQX control panels.
Using that subnet, a router’s or remote panel’s frame address is the last octet in the address. For
example, if the router’s full IP address is 192.168.2.87, the router’s frame address is 87 and the sub-
net is 192.168.2. A frame address can range from 1 to 254. The values 0 and 255 are not allowed
because they have special meaning.