Network Basics And Troubleshooting; Issue: Ip Address Problems; Issue: Lcd Screen Displays "-Web - enphase Envoy Installation And Operation Manual

Network Basics and Troubleshooting

To the Local Area Network (LAN), the Envoy is just another host on the network, much like a personal
computer. Enphase offers technical support at
Enphase's Support responsibility does not extend to the premises network or LAN.
The Envoy must obtain a DHCP (Dynamic Host Configuration Protocol) IP address and have a route to the
Internet. The Envoy will request this IP address from the broadband router during the power-up sequence.
Two small green LEDs on the Ethernet port indicate Internet link and activity. One LED will be solid green,
and the other will blink every few seconds.

Issue: IP Address Problems

When the Envoy first boots up, it is configured to perform a DHCP broadcast, requesting an IP address from
a DHCP source. This source can be a server/computer, but almost all consumer-grade broadband routers
also provide DHCP services as well. This is the usual source of IP addresses for network hosts (computers,
laptops, and the Envoy).
If the IP address displayed on the Envoy's LCD screen is 169.254.120.1, or if the IP address does not match
the DHCP subnet on the internal network, then the Envoy was unsuccessful in obtaining a DHCP lease from
the router.
 Check network connectivity to the router or other DHCP server. You may also wish to contact
your Internet Service Provider or refer to your router documentation for help.
 Check that you are using a broadband router and not a switch or a hub. Many hubs and switches
cannot provide a DHCP lease and may not allow the Envoy to connect to the web.
 Use the Envoy menu button to "Get New IP Address", and then allow 30 to 60 seconds for the
new IP address to appear on the Envoy LCD screen.
 When using the Ethernet cable, two small LEDs on the Ethernet port indicate Internet link and
activity. One LED will be solid green, and the other will blink green or yellow every few seconds.
If the LEDs are not both on or blinking, try using a new Ethernet (CAT5) cable in place of the
existing cable.
 Power down all units in the chain, applying power again in this order: 1) modem, 2) router, and
3) Envoy. Allow a few minutes for the IP address to be reassigned.
 Try another Ethernet cable (between Envoy and router) to eliminate cabling as the problem.

Issue: LCD Screen Displays "-Web"

This means that the Envoy has no connection to the Enlighten website.
 Allow a few minutes longer. If the Envoy has recently received a valid IP address, it will likely
display "+Web" momentarily.
 Check network connectivity to the router. You may also wish to contact your Internet Service
Provider or refer to your router documentation for assistance.
 Unplug all units in the chain, applying power again in this order: 1) modem, 2) router, and 3)
Envoy. Allow a few minutes for the IP address to be reassigned.
 Try another Ethernet cable (between Envoy and router) to eliminate cabling as the problem.
 Access the Administration screen on the Envoy local interface as directed on page 40, and click
"Update Interface 0".
 Temporarily remove any power line communication bridges, and connect the Envoy directly to
the broadband router.
 Run the "Network Connectivity Check" on the Ethernet Network Configuration administrative
page on the Envoy.
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Envoy Installation and Operation
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