Multi-Switch Considerations for AMP VLAN

Overview
Supported Switches
- Luxul
- Netgear
- Cisco
- TP-Link
Stack vs Trunk
Bandwidth Considerations
SFP+ Cables

Overview

If the Right Switch for the system requires more than one switch, AMP VLAN supports up to 63 switches in a single system.

Those switches need additional considerations:

All switches in the system must be from the SAME MANUFACTURER, but may be different models.
Switches must have 10Gb SFP+ ports.
Copper or fiber SFP+ cables connect the switches together.
The switches pass data between them over trunk connections and link aggregation groups.
Switch 1 must have 1 port reserved - the last RJ45 port - for network connection. All other ports on all other switches can be filled with Just Add Power devices.

Supported Switches

Luxul

Model	Ports On	POE Devices per Switch	SFP+ Ports	Minimum Firmware
AMS-4424P	Rear	24	2	v4.0.6
XMS-7048P	Front	48	2	v4.0.6
SW-610-24P-R	Rear	24	4	v1.0.3
SW-610-48P-F	Front	48	4	v1.0.3

Netgear

All Netgear GSM models have rear-facing ports. Switches marked with a "U" have much more POE than is needed for a Just Add Power system, but can be used if the "P" version is unavailable.

Model	POE Ports	Devices per Switch	SFP+ Ports	Minimum Firmware
GSM4210PX (M4250-8G2XF-PoE+)	8	8	2	v13.0.2.34
GSM4212PX (M4250-10G2XF-PoE+)	8	10	2	v13.0.2.34
GSM4212UX (M4250-10G2XF-PoE++)	8	10	2	v13.0.2.34
GSM4230PX (M4250-26G4XF-PoE+)	24	26	4	v13.0.2.34
GSM4248PX (M4250-40G8XF-PoE+)	40	40	8	v13.0.2.34
GSM4248UX (M4250-40G8XF-PoE++)	40	40	8	v13.0.2.34

Cisco

All Cisco CBS350 models have front-facing ports.

Model	POE Ports	Devices per Switch	SFP+ Ports	Minimum Firmware
CBS350-24P-4X	19	24	4	v3.1.1.7
CBS350-24FP-4X	24	24	4	v3.1.1.7
CBS350-48P-4X	37	48	4	v3.1.1.7
CBS350-48FP-4X	48	48	4	v3.1.1.7

TP-Link

All TP-Link models have front-facing ports

Model	POE Ports	Devices Per Switch	SFP+ Ports	Minimum Firmware
TL-SG3428XMP	24	24	4	Go to KB article
TL-SG3452XP	48	48	4	Go to KB article

Stack vs Trunk

AMP VLAN supports multi-switch systems in trunk topology.

Please see Stacking vs Trunking for more information.

Bandwidth Considerations

When multiple switches are used, the video bandwidth usage for Transmitters needs to be considered as the cables that connect switches have a maximum bandwidth capability that is much lower than a single switch.

To estimate Just Add Power Transmitter bandwidth usage:

Generation	Average Bandwidth*	Recommended TX per Gb
2GΩ/3G	400 Mbps	2.5
3G	500 Mbps	2
Max Color	850 Mbps	1

*Actual bandwidth will depend on source resolution, framerate, colorspace and content. The peak bandwidth output of a 3G Transmitter is 850 Mbps, most often during boot-up and source switching. The peak bandwidth output of a MaxColor Transmitter is 850 Mbps.

The number of SFP+ ports on each switch, combined with the number of switches in the system determine how many SFP+ links can be made between switches. AMP VLAN builds a system so that half of the SFP+ ports connect to one switch, and the other half connect to another switch. This lets switches link together in a chain topology.