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Creating a physical dante network, Basic configuration, Star network topology – Extron Electronics DMP 128 User Guide User Manual

Page 122: Daisy chain network topology

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creating a Physical Dante network

Basic configuration

A physical network is required to share Dante audio channels between DMP 128 AT
devices. Each DMP 128 AT contains a 4-port Gigabit switch with four RJ-45 connectors
located on the back panel to accept standard network cables. The 4-port switch can
operate as a standard switch described in this section or in redundant mode (see

Redundant Configuration

on page 117) that switches between duplicate audio

streams during a single network failure, preventing audio stream interruption.

notE: The Dante Controller network configuration defaults to switched mode

(basic) making star and daisy-chain configurations possible. When configured
for redundant operation, different connection rules apply (see

Redundant

Configuration

on page 117).

A DMP 128-based Dante network can be configured in a daisy-chain or Star network
topology using the four port switch and the Dante Controller in Switched mode.
Star network topology has one DMP 128P AT as the central unit, which is then directly
connected to up to three other units. Alternatively, a larger network switch can be used in
place of the central DMP 128 AT, allowing more than three units to be connected in the
star configuration (see figure 69).

LAN

EXP

RS-232

Tx Rx G

RESET

1

2

3

4

REMOTE

AT

DMP 128 AT #1

LAN

EXP

RS-232

Tx Rx G

RESET

1

2

3

4

REMOTE

AT

Central Unit

DMP 128 AT #4

LAN

EXP

RS-232

Tx Rx G

RESET

1

2

3

4

REMOTE

AT

DMP 128 AT #2

LAN

EXP

RS-232

Tx Rx G

RESET

1

2

3

4

REMOTE

AT

DMP 128 AT #3

Star Network Topology

Figure 69.

Star Network Topology

A daisy chain configuration can also be used. Each unit is connected to both the previous
unit and the next unit in the chain (see figure 70).

LAN

EXP

RS-232

Tx Rx G

RESET

1

2

3

4

REMOTE

AT

DMP 128 AT MASTER

LAN

EXP

RS-232

Tx Rx G

RESET

1

2

3

4

REMOTE

AT

DMP 128 AT #1

LAN

EXP

RS-232

Tx Rx G

RESET

1

2

3

4

REMOTE

AT

DMP 128 AT #3

LAN

EXP

RS-232

Tx Rx G

RESET

1

2

3

4

REMOTE

AT

DMP 128 AT #2

Daisy Chain Network Topology

Figure 70.

Daisy Chain Topology

Hybrid versions combining the star and daisy chain topologies can also be built, but a ring
topology, or any topology that creates a duplicate connection causes a connection failure
in the Dante Controller software. Redundant connections are possible using the primary
and secondary port interface structure (see

Redundant Configuration

on page 117).

notE: Connections between DMP 128 AT ports in either a star or daisy chain

network do not need to be sequential, nor do they need to be made between the
same port numbers.

DMP 128 • Software Control

116