Overview
The built-in DHCP Server on a Just Add Power Decoder can provide IP addresses to third-party network devices connected to the Just Add Power Device Network, such as control processors, displays, touch panels, streaming devices, and other network-enabled equipment.
For more information about supported connection scenarios, refer to Network Connection Through Receiver Port.
To provide network access to a third-party device, connect both the Decoder and the third-party device to the same unmanaged gigabit network switch attached to the Decoder Switchport on the Just Add Power network switch.
Disclaimer: This configuration may not provide network communication for devices that require discovery protocols to be identified or controlled.
Enable the DHCP Server
Before You Begin: Only one Decoder should have the DHCP Server enabled. Enabling the DHCP Server on multiple Decoders may result in unpredictable address assignment and network communication issues.
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Connect to the Decoder through a Telnet session. If you are unfamiliar with Telnet access, refer to How to Telnet to a Device (Omega, Ultra, and MaxColor Series).
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Enable the DHCP Server by entering the following commands:
astparam s dhcp_server_enable y
astparam save
reboot -
Wait for the Decoder to reboot. After rebooting, the DHCP Server can issue addresses to up to 50 network devices.
Devices that receive an address from the DHCP Server remain on the Just Add Power Device Network. To communicate with external networks or the internet, routing must exist between the Just Add Power Device Network and the customer network.
For most installations, this requires configuring a static route on the router. Refer to Setting Up a Static Route for additional information.
AMP Standardized Systems
In AMP Standardized systems, the DHCP Server automatically issues addresses based on the second and third octets of the Decoder IP address where the DHCP Server is enabled.
For example, a Decoder with an address of 172.27.1.10 issues DHCP addresses from 172.27.1.200 through 172.27.1.249.
The following examples illustrate how the DHCP address range is determined by the Decoder IP address:
| Decoder IP Address | DHCP Address Range | Subnet Mask | Default Gateway |
|---|---|---|---|
| 172.20.1.10 | 172.20.1.200 - 172.20.1.249 | 255.255.0.0 | 172.20.0.1 |
| 172.27.1.10 | 172.27.1.200 - 172.27.1.249 | 255.255.0.0 | 172.27.0.1 |
| 172.29.3.10 | 172.29.3.200 - 172.29.3.249 | 255.255.0.0 | 172.29.0.1 |
JADConfig Systems
The following DHCP scopes are used when the DHCP Server is enabled on systems configured using traditional JADConfig addressing schemes.
| Decoder Subnet | DHCP Address Range | Subnet Mask | Default Gateway |
|---|---|---|---|
| 10.x.x.x | 10.128.0.200 - 10.128.0.249 | 255.0.0.0 | 10.128.0.1 |
| 172.16.x.x | 172.16.128.200 - 172.16.128.249 | 255.255.0.0 | 172.16.128.1 |
| 192.168.100.x | 192.168.100.200 - 192.168.100.249 | 255.255.255.0 | 192.168.100.129 |
| 192.168.200.x | 192.168.200.200 - 192.168.200.249 | 255.255.255.0 | 192.168.200.129 |
Alternate Solution
As an alternative to DHCP, a static IP address can be assigned directly to the connected network device.
AMP Standardized Static Addressing
For AMP Standardized systems, addresses .101 through .200 are available for static assignment to third-party devices connected through Decoder Switchports.
The following examples illustrate the network settings that should be used:
| AMP Device Network | Available Static Address Range | Subnet Mask | Default Gateway |
|---|---|---|---|
| 172.20.0.0 | 172.20.0.101 - 172.20.0.200 | 255.255.0.0 | 172.20.0.1 |
| 172.27.0.0 (Default) | 172.27.0.101 - 172.27.0.200 | 255.255.0.0 | 172.27.0.1 |
| 172.29.0.0 | 172.29.0.101 - 172.29.0.200 | 255.255.0.0 | 172.29.0.1 |
JADConfig Static Addressing
For JADConfig systems, use the same addressing information shown in the JADConfig Systems DHCP table when assigning a static IP address to a third-party device.
To avoid address conflicts, do not assign a static address that is already in use by another device.
A static route must be applied to the router to allow the network device to communicate with the regular data network.
