- Networks
- Wi-Fi routers
DHCP-ISP-NO-FUNCIONA
ASUS DHCP-ISP-NO-FUNCIONA on Wi-Fi router: WAN DHCP failure
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
The status 'Your ISP's DHCP does not function properly' in the ASUS router Network Map means the WAN port detects an Ethernet cable but cannot obtain internet access. Verify your ISP WAN connection type, switch DHCP query frequency from Aggressive to Normal mode, and reboot modem and router.
Safety first
Stop and check this first
- Pressing the RESET button for 5 to 10 seconds clears all custom settings on the ASUS router, so you will need to run Quick Internet Setup (QIS) again.
- Do not open the ASUS router or ISP modem; perform all isolation checks solely using external RJ45 Ethernet cables and the ASUSWRT interface.
Safe checks you can perform
- Change DHCP query frequency from Aggressive mode to Normal mode
- Confirm your ISP WAN connection type and settings
- Connect a computer directly to the ISP modem cable
- Verify latest firmware and reconfigure via QIS after reset
Leave these tasks to a qualified professional
- Do not attempt this professional task: Hardware and WAN diagnostics with ASUS Customer Service Center
- Do not attempt this professional task: Line and DHCP lease check by your Internet Service Provider (ISP)
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Hardware and WAN diagnostics with ASUS Customer Service Center
What they doIf direct connection to the ISP modem works on a computer, but the ASUS router still reports that the ISP DHCP does not function properly after setting Normal DHCP query mode, updating firmware and resetting via QIS, contact ASUS Customer Service.
They must show youthe WAN port diagnostic results alongside proof that the ISP cable works on a direct computer connection.
In writingthe ASUS case number and the service conclusion or warranty repair authorization.
Line and DHCP lease check by your Internet Service Provider (ISP)
What they doIf a computer connected directly to the ISP modem or Ethernet cable cannot access the internet, or if you need to confirm your WAN connection parameters, your ISP checks the modem and line provisioning.
They must show youthat a valid WAN IP address is assigned over the ISP Ethernet cable and confirm the required WAN type.
In writingthe ISP support ticket number, confirmed WAN connection parameters and line test outcome.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Change DHCP query frequency from Aggressive mode to Normal mode
- Who:
- you.
- How:
- sign in to the ASUSWRT web GUI, go to WAN, Internet Connection, scroll to Special Requirement from ISP, change DHCP query frequency from Aggressive mode to Normal mode, click Apply, and restart both the modem and the router.
- Result that matters:
- prevent the upstream modem from dropping WAN DHCP requests due to rapid polling.
- If Network Map changes to Connected and displays a WAN IP:
- the modem was blocking Aggressive mode.
- If the ISP DHCP error remains:
- verify the WAN connection type required by your provider.
- Evidence to keep:
- screenshot of the Special Requirement from ISP setting and the Network Map status after rebooting.
Evidence: [Troubleshooting] Failed Internet access through router · [Wireless Router] Network Map - Internet status description in the router's GUI
Confirm your ISP WAN connection type and settings
- Who:
- you.
- How:
- in WAN, Internet Connection, verify with your ISP whether your line uses Automatic IP (DHCP), PPPoE or Static IP, enter the exact account or IP settings required, and click Apply.
- Result that matters:
- ensure the ASUS router uses the authentication and addressing method expected by your ISP.
- If entering the correct ISP WAN settings restores internet access:
- the WAN type was misconfigured.
- If settings match your ISP requirements but the error persists:
- test the ISP cable directly on a computer.
- Evidence to keep:
- screenshot of the WAN Internet Connection page showing the selected WAN connection type.
Evidence: [Troubleshooting] Failed Internet access through router · [Wireless Router] Network Map - Internet status description in the router's GUI
Connect a computer directly to the ISP modem cable
- Who:
- you.
- How:
- unplug the RJ45 Ethernet cable from the ASUS router WAN port, connect it directly to a computer whose network card is set to obtain an IP address automatically, and test whether the computer can access the internet.
- Result that matters:
- isolate whether the DHCP failure is on the ISP modem/line or inside the ASUS router.
- If the computer also fails to get internet access directly:
- contact your ISP to resolve the line or modem issue.
- If the computer connects to the internet normally:
- check the ASUS firmware version and run a factory reset with QIS.
- Evidence to keep:
- note or screenshot of the direct Ethernet connection test on the computer.
Evidence: [Troubleshooting] Failed Internet access through router · [Wireless Router] Network Map - Internet status description in the router's GUI
Verify latest firmware and reconfigure via QIS after reset
- Who:
- you.
- How:
- check the Firmware Version link at the top of the Network Map (or in the ASUS Router app under Settings, Firmware Upgrade); if already up to date and the direct PC test worked, hold the RESET button for 5 to 10 seconds until the Power LED flashes and set up the router again using Quick Internet Setup (QIS).
- Result that matters:
- clear any corrupted WAN state and apply known firmware fixes.
- If internet access works after updating or completing QIS:
- the issue was caused by router software state.
- If the router still reports the ISP DHCP error while direct PC connection works:
- contact ASUS Customer Service.
- Evidence to keep:
- installed firmware version number and screenshot of the QIS completion result.
Evidence: [Troubleshooting] Failed Internet access through router · [Solución de problemas] No se puede acceder a Internet a través del router
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Networks
- Brand
- ASUS
- Product type
- Wi-Fi routers
Known code variants
- ASUS El DHCP de su ISP no funciona correctamente
- ASUS Network Map DHCP de su ISP no funciona
- ASUS router ISP DHCP does not function properly
- ASUS RT-AX88U DHCP ISP no funciona correctamente
- ASUS RT-AX88U Your ISP's DHCP does not function properly
- ASUS WAN DHCP query frequency aggressive normal
- ASUS Your ISP's DHCP does not function properly
- ASUSWRT Network Map ISP DHCP error
- router ASUS error DHCP del ISP
What it means
According to official ASUS support (FAQ 1042636 and FAQ 1030645 covering ASUSWRT, using models such as RT-AX88U and RT-AC68U as examples; other models may vary), this Network Map status indicates that the router detected a connected RJ45 network cable on the WAN port but cannot access the internet. It can happen when the ISP requires PPPoE or Static IP instead of Automatic IP, when the modem ignores DHCP WAN IP requests sent too rapidly in Aggressive mode, or when the ISP line itself is down. This message alone never proves that your ASUS router is defective.
Warnings and stop conditions
- Loweditorial warning
Pressing the RESET button for 5 to 10 seconds clears all custom settings on the ASUS router, so you will need to run Quick Internet Setup (QIS) again.
Evidence: [Troubleshooting] Failed Internet access through router · [Solución de problemas] No se puede acceder a Internet a través del router
- Loweditorial warning
Do not open the ASUS router or ISP modem; perform all isolation checks solely using external RJ45 Ethernet cables and the ASUSWRT interface.
Evidence: [Troubleshooting] Failed Internet access through router · [Wireless Router] Network Map - Internet status description in the router's GUI
Symptoms and causes
Probable causes · in order
- Modem ignoring WAN DHCP requests sent in Aggressive modeCommon
ASUS explains in FAQ 1030645 that a modem may ignore DHCP WAN IP requests if too many are sent in a short period when DHCP query frequency is set to Aggressive mode.
Evidence: [Troubleshooting] Failed Internet access through router · [Solución de problemas] No se puede acceder a Internet a través del router
- Incorrect WAN connection type or ISP settings in ASUSWRTCommon
According to FAQs 1042636 and 1030645, if your ISP requires PPPoE credentials or a Static IP rather than Automatic IP, the router will fail to obtain WAN connectivity via DHCP.
Evidence: [Troubleshooting] Failed Internet access through router · [Wireless Router] Network Map - Internet status description in the router's GUI
- Upstream ISP modem or broadband line outagePossible
ASUS notes that if a computer connected directly to the ISP cable or modem also fails to reach the internet, the fault lies with the ISP connection rather than the ASUS router.
Evidence: [Troubleshooting] Failed Internet access through router · [Wireless Router] Network Map - Internet status description in the router's GUI
- Outdated firmware or corrupted router configurationLess common
In Step 7 of FAQ 1030645, ASUS states that outdated firmware or corrupted settings can prevent WAN access until the firmware is updated or reset via the QIS wizard.
Evidence: [Troubleshooting] Failed Internet access through router · [Solución de problemas] No se puede acceder a Internet a través del router
Virtual technician
Does DHCP-ISP-NO-FUNCIONA still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
[Troubleshooting] Failed Internet access through router
ASUS · 2026 · official_doc
- 2
[Wireless Router] Network Map - Internet status description in the router's GUI
ASUS · 2024 · official_doc
- 3
[Network Map] Descripción del estado de Internet en la GUI del router
ASUS · 2022 · official_doc
- 4
[Solución de problemas] No se puede acceder a Internet a través del router
ASUS · 2025 · official_doc
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