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Prepare the internet connection type, service requirements and recovery information before disconnecting a working gateway.
The fastest router installation often begins before any cable is unplugged. Collect the provider-specific information while the old network still works. This avoids guessing at the setup wizard and makes a failed migration easier to reverse.
Record the internet handoff
Identify whether the router receives Ethernet from a modem, optical terminal, wall socket or another gateway. Note the device and port at the far end of the cable. A fiber service does not necessarily mean that your retail router connects directly to the fiber.
Tenda’s internet setup guidance distinguishes PPPoE, DHCP and static addressing. PPPoE uses provider-supplied credentials; static service requires an address set; DHCP obtains the configuration automatically. The correct choice comes from the provider arrangement, not from which button looks easiest.
Create a private installation record
- Confirmed connection type and any required account details.
- VLAN or other service settings explicitly supplied by the ISP.
- Whether a particular modem, optical terminal or registered device must remain.
- Telephone or television services that depend on the gateway.
- Provider support instructions and the old working wiring.
Store passwords separately from a general network diagram. If you later share the diagram for help, remove credentials, public addresses and identifying labels that are not needed to explain the fault.
Test one layer at a time
After installation, check the WAN link and connection status, then test one wired client. Add wireless devices after the basic internet path works. This sequence prevents a Wi-Fi password problem from being mistaken for an ISP authentication failure.
Keep a reversible first attempt
Label the original cables and retain the previous gateway settings. If the new router cannot obtain service, record the exact status message and restore the known arrangement. Ask the ISP about the unresolved requirement rather than cycling through unrelated connection types.
The objective is a verified service handoff with a clear recovery path. A setup wizard’s automatic guess is useful evidence, but it does not replace the provider’s confirmed instructions.
Sources and editorial notes
Sources checked 8 October 2026. Independent guidance and original illustrations; product comparisons use published specifications rather than hands-on benchmarks. Check the exact model, revision and regional documentation before changing settings.