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Video Network Setups
4
Video Network Setups
4.1 Introduction
An In-Home AV network is made up of an access point (AP) adapter and several end points (EPs). In-Home AV networks can have only one AP. However, several In-
Home AV networks can be created in the same space, each of them with its own AP, because each network is isolated by a unique network identifier. An adapter can be configured as a Fixed AP (i.e. it always will be an AP) or an automatic EP/AP. When set to automatic, the In-Home AV protocol decides which adapter will function as an AP. This means that if no Access Point (AP) has been defined, an End Point (EP) will be automatically set to function as an AP.
Note: It is recommended to configure a Fixed AP. This provides increased stability for future reconfigurations and in multi-network environments.
Note: It is not necessary to have full connectivity between all the adapters on a network. The network topology will be configured automatically, allowing for the use of repeaters if the connectivity between two adapters fails.
The necessary steps for setting up a basic In-Home AV network are, for each adapter, as follows:
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10.10.1.<pick a number>).
- Select the spectral configuration (notches enabled or disabled).
network.
on the network.
- It is not necessary to configure the In-Home AV MAC, since there is only one available network topology in the current firmware version. To configure a Fixed
AP is optional.
4.2 Network Scenarios
This section contains a few network scenarios, explaining the application and necessary configuration.
There are two types of In-Home AV network.
Corinex AV200 CableLAN Adapter
Video Network Setups
you do not want to change the settings on your network, the network configuration protocol will configure all the adapters automatically. By default,
all adapters are EPs and have a public (empty) network ID. If the protocol
does not detect an AP in the channel, it will change an EP to act as an AP. All
EPs will connect directly to the automatic AP if they can, or to an EP that will
act as a repeater. Then the network will be established.
a network ID must be assigned to all adapters on the network using the
configuration tool. It is recommended to configure a fixed AP (for example the adapter with the video server or Internet access). If the fixed AP is
turned off or is not defined, the network configuration protocol
will select an EP to change to function as an AP (automatic), in order to
configure the network.
4.2.1 Single-Network Scenarios
The following two sections show examples of a single In-Home AV network.
4.2.1.1 Local Area Network using two AV200 CableLAN Adapters
The picture below shows a simple CableLAN network where two adapters are used to make a local area connection available in all outlets of the house. This is the simplest case, where no QoS (Quality of Service) configuration is required.
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Home CableLAN Wiring
Corinex AV200
CableLAN Adapter
Desktop PC
Corinex AV200
CableLAN Adapter
IP Set- Top Box
Corinex AV200 CableLAN Adapter
Video Network Setups
4.2.1.2 Extending the Internet Connection to an AV200 CableLAN
Network
This picture shows a more advanced CableLAN network with three Corinex AV200
CableLAN Adapters. This is a common network configuration, where Internet access and digital video are delivered through the same ADSL line. This configuration requires some QoS (Quality of Service) settings to guarantee video quality when the network is carrying large amounts of data from the Internet connection.
Corinex AV200
CableLAN Adapter
Home CableLAN Wiring
Desktop PC
Corinex AV200
CableLAN Adapter
ADSL2+ Wireless Gateway
G
Corinex ADSL2+
Wireless Gateway G
Corinex AV200
CableLAN Adapter
IP Set- Top Box
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Note: Either of these two basic scenarios can be enlarged, adding more adapters, computers and set-top-boxes.
4.2.2 Multi-Network Scenarios
A multi-network scenario occurs whenever there are two or more adapters from different networks (different network IDs) on the same circuit. In this case, a coexistence mechanism is included, which allows a secure form of communication without interference from adapters from other networks.
Corinex AV200 CableLAN Adapter
Video Network Setups
In multi-network scenarios, such as the one depicted in the picture above, there is a new entity, called the QoS controller. The QoS controller’s role is to assign channel access to the different networks. The QoS controller acts at the same time as the
AP of one of the networks. In the presence of several networks, the coexistence protocol automatically selects one of the APs as the QoS controller.
4.2.2.1 Two Networks on Different Circuits
If two In-Home AV networks are configured, with no direct visibility between any of the adapters belonging to different networks, then these two networks will behave as two independent networks. Both APs will act as QoS controllers.
4.2.2.2 Two Networks on the Same Circuit
Different networks are defined by different network IDs.
If two In-Home AV networks are configured as public networks, the coexistence protocol will act as if there were only one network. The network ID is transmitted by every adapter to communicate the existence of its network. If an adapter with network ID A receives network ID B, then it knows that there are at least two networks sharing the channel.
For example, one In-Home AV network is configured and running. A second network is configured and becomes active. Then the second network will notify the first network of its existence in some specified access slots, and both networks will automatically be reconfigured and will share the channel. If both networks are configured at the same time, the QoS controller will be selected from all available
APs.
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Corinex AV200 CableLAN Adapter
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