Networking; 1.Ip Addressing; 1.1. Ip Addressing Troubleshooting; 2.Dante™ Networking - Powersoft audio Ottocanali Série Guide Rapide

Networking

Ottocanali DSP+D and DSP+ETH amplifiers support
linear daisy-chain, star and loop network topologies; in a
daisy-chained network the PC with Armonía Pro Audio Suite
must always be at one end of the chain.
Be aware that daisy-chaining does not guarantee reli-
ability in production environment, since any fault may yield
to network sectioning and lost of system control.
When efficiency and reliability are paramount, a redun-
dant network topology is advisable. In order to exploit the
Dante features, star and open daisy-chain network topology
are allowed.

8 : 1.IP addressing

Factory default network settings are DHCP/AutoIP,
in order for the amplifier platform to self-configure when
connected to an existing LAN or PC. Fixed IP policy can
also be adopted and configured through Armonía Pro Audio
Suite.
If a DHCP server is not active within the network, the am-
plifier platform initiates a stateless address auto-configuration
(i.e. Zero-configuration networking methodology – Zeroconf):
it self assigns a local numeric network address (of the
type 169.254.x.y – 172.31.*.* for the secondary network
if present – with a subnet mask 255.255.0.0) and automati-
cally distributes and resolves the hostnames of networked
devices. For setting a static IP address please refer to the
Armonía Pro Audio Suite user guide.

8 : 1.1. IP Addressing troubleshooting

When connecting the Ottocanali DSP+D/DSP+ETH to a
network environment it may happen that Armonía Pro Audio
Suite does not discover or import the amplifier.
Usually this is a problem of IP addressing: both Armonia
and the Ottocanali DSP must belong to the same subnet. If
a DHCP server is present on the network and a Ottocanali
DSP amplifier is in AUTO IP, networking may become
unstable.
As a rule of thumb, turn the DHCP server
on before connecting the amplifiers.
IP addressing of an Ottocanali DSP+D/DSP+ETH ampli-
fier is established during the bootstrap: when the Ottocanali
DSP amplifier discovers a DHCP server on the network
during the startup, it negotiates the networking parameters.
If the Ottocanali DSP does not reveal a DHCP server on the
network during the startup it set itself in AUTO IP mode.
8 : 2.Dante™ networking
The Dante equiped models of Ottocanali DSP+D ampli-
fier support Dante redundant networking via the two Rj45
ports on the rear panel:
f Primary/ETH1 is the Primary network port; f
f Secondary/ETH2 is the Secondary network port. f
Dante connectivity is always supported on the Primary/
ETH1 Gigabit Ethernet port; the Secondary/ETH2 Gigabit
Ethernet port offers continuity of operation when a parallel
redundant network is established.
In order to implement a Dante network, a computer run-
ning Dante Controller have to be used. Dante Controller is a
software application that manages devices on the network.
Ottocanali DSP+D amplifiers are automatically discovered
and displayed in Dante Controller with the default identifier
MODELNAME-SERIAL (e.g. 8K4-71520).
Dante networks will almost always require at least one
network switch. Redundant infrastructures may require mul-
tiple switches. For maximum reliability, network switch shall:
f be Rated for Gigabit Ethernet; f
f be Non-blocking;
f
f have Quality of Service (QoS) with at least four queues; f
f have Diffserv (DSCP) QoS with strict priority; f
f have EEE (Energy efficient ethernet) switched off. f
For detailed information on setting up a switch, please
refer to the manufacturer's documentation.

8 : 2.1. Redundant network configuration

Dante Redundancy can be set up and used between any
supporting Dante-enabled audio equipment: it works by us-
ing two completely independent and separate networks, the
Primary Network and the Secondary Network.
To setup and use Dante Redundancy, connect the
Ottocanali DSP+D amplifier and other redundant Dante-
enabled audio equipment using duplicate Gigabit switches
and Ethernet cables. Connect your computer running Dante
Virtual Soundcard and Dante Controller, and other non-
redundant Dante-enabled audio equipment to the Primary
Network.
The primary and secondary networks MUST NOT be
inter-connected at any point. Make sure any computer is
set to automatically configure its IP address.
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