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VLAN Switching Protocol


Overview

Switching sources in a Just Add Power VLAN Switching system involves changing the group membership of the port on the switch that the Receiver is connected to - the VLAN - to match the VLAN of the Transmitter it wants to watch.

Switching sources in a VLAN Switching system is always done by direct communication to the managed gigabit Ethernet switch that the Just Add Power devices are connected to.


Concept

An audio/video signal in a VLAN Switching system is distributed according to VLAN membership of the physical port on the switch. Audio and video always switch together, and there is only one active audio/video signal on any network cable at any time (excepting trunk or stack connections).

Each Transmitter is connected to a port with a unique VLAN ID that distinguishes it from all other Transmitters on the network.

The VLAN membership of the port of a Receiver is altered to match the VLAN ID of the Transmitter it wants to watch.

Switching

VLAN Switching is a 2-part process:

  1. Select the port(s) on the switch that the Receiver(s) is connected to
  2. Change the VLAN membership of the port(s) to match the VLAN ID of the Transmitter to be watched

Multicast IP

VLAN Switching uses the same multicast IP for all Transmitters and Receivers

  • 239.92.0.0

AMP VLAN

Advanced Matrix Programmer Software - AMP - configures supported switches and Just Add Power 3G or MaxColor devices to work with VLAN Switching.

AMP creates VLANS 100-201 for Just Add Power devices and configures them for a B Class IP Subnet: 172.27.0.0/16

Vlan 100:

Group membership for all devices.

  • Incoming communication only for Transmitters. This group membership never changes.

  • Outgoing and incoming communication for Receivers. This group membership never changes.

Vlan 101:

Group membership for Transmitter 1 and any Receivers watching Transmitter 1.

  • Incoming and outgoing communication for only Transmitter 1. This group membership never changes.

  • Incoming communication for any Receivers watching Transmitter 1. This group membership changes when the Receiver is set to watch a different Transmitter.

VLAN 102:

Group membership for Transmitter 2 and any Receivers watching Transmitter 2.

  • Incoming and outgoing communication for only Transmitter 2. This group membership never changes.

  • Incoming communication for any Receivers watching Transmitter 2. This group membership changes when the Receiver is set to watch a different Transmitter.

VLAN 103:

Group membership for Transmitter 3 and any Receivers watching Transmitter 3.

  • Incoming and outgoing communication for only Transmitter 3. This group membership never changes.

  • Incoming communication for any Receivers watching Transmitter 3. This group membership changes when the Receiver is set to watch a different Transmitter.

VLANs 104-201:

Continue sequentially like VLANs 101-103

Additionally each device is assigned a management IP that is used for Layer 3 Features - video wall, RS232/IR/CEC control of endpoints, Tiling Transmitter layout control, on-screen display, Image Pull.


JADConfig

Just Add Drivers Configuration Software - JADConfig - configures supported switches and Just Add Power 2G or 3G devices to work with VLAN Switching.

JADConfig creates VLANs 10-410 for Just Add Power devices and offers a range of IP schemes.

VLAN 10:

Group membership for all devices.

  • Incoming communication only for Transmitters. This group membership never changes.

  • Outgoing and incoming communication for Receivers. This group membership never changes.

VLAN 11:

Group membership for Transmitter 1 and any Receivers watching Transmitter 1.

  • Incoming and outgoing communication for only Transmitter 1. This group membership never changes.

  • Incoming communication for any Receivers watching Transmitter 1. This group membership changes when the Receiver is set to watch a different Transmitter.

VLAN 12:

Group membership for Transmitter 2 and any Receivers watching Transmitter 2.

  • Incoming and outgoing communication for only Transmitter 2. This group membership never changes.

  • Incoming communication for any Receivers watching Transmitter 2. This group membership changes when the Receiver is set to watch a different Transmitter.

VLAN 13:

Group membership for Transmitter 3 and any Receivers watching Transmitter 3.

  • Incoming and outgoing communication for only Transmitter 3. This group membership never changes.

  • Incoming communication for any Receivers watching Transmitter 3. This group membership changes when the Receiver is set to watch a different Transmitter.

VLANs 14-410:

Continue sequentially like VLANs 11-13

Additionally each device is assigned a management IP that is used for Layer 3 Features - video wall, RS232/IR/CEC control of endpoints, Tiling Transmitter layout control, on-screen display, Image Pull, SwitchPlease.


Matrix Control Commands

AMP

Switching commands in AMP are sent to a Transmitter or Receiver in the system. This means that matrix control commands in AMP do not depend on the switch model. Full information is available in the JPSW Matrix Control article.

JADConfig

Cisco

For a Cisco SG300, change the Receiver in port B to watch the Transmitter in VLAN X:

  1. config t
  2. interface giB
  3. switchport general allowed vlan remove 11-410
  4. switchport general allowed vlan add X untagged
  5. end

Example: Change the Receiver in port 28 to watch the Transmitter in VLAN 14

  1. config
  2. interface gi28
  3. switchport general allowed vlan remove 11-410
  4. switchport general allowed vlan add 14 untagged
  5. end

Luxul

For any supported Luxul switch, change the Receiver in stack A, port B to watch the Transmitter in VLAN X:

  1. config
  2. interface gi A/B
  3. switchport hybrid allowed vlan 10,X
  4. end

Example: Change the Receiver in stack 2, port 14 to watch the Transmitter in VLAN 12:

  1. config
  2. interface gi 2/14
  3. switchport hybrid allowed vlan 10,12
  4. end
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  • 18-Nov-2022
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