Viettel Router Login
Access your Viettel router at 192.168.1.1 or 192.168.1.100:8080. Complete login guide with default passwords (admin/admin or user/user), setup instructions for H640DW, H640W, G-97RG6M GPON fiber optic models.
What is Viettel Router Login?
Viettel router login provides access to your fiber optic router's admin panel at 192.168.1.1 or 192.168.1.100:8080 (for GPON models). Default credentials are username admin and password admin, or user/user for Dasan models. Viettel provides fiber optic (GPON) routers for high-speed internet access across Vietnam.
H640DW
GPON Dual-Band AC1200
H640W
GPON Fiber Optic WiFi
G-97RG6M
GPON WiFi 6 Router
TP-Link TL-WR841N
Viettel ISP Version
Note: Login credentials are printed on a label on the back of your Viettel router. Check label for WEB User ID and Password before trying defaults.
How to Login to Viettel Router
Connect to Viettel Network
Connect your device to Viettel router via WiFi or Ethernet cable. For first-time setup or if WiFi password is unknown, use wired connection. Default WiFi name (SSID) and password are on router label (back or bottom).
Open Browser & Enter IP Address
Open web browser and enter router IP address:
http://192.168.1.1http://192.168.1.100:8080192.168.1.1 for standard models (TP-Link versions). 192.168.1.100:8080 for GPON models (H640DW, H640W, G-97RG6M).
Enter Login Credentials
Try these default credentials:
Option 1 (Standard Models):
Username: admin
Password: admin
Option 2 (Dasan H640DW/H640W):
Username: user
Password: user
Important: Check router back label for specific WEB User ID and Password before trying defaults.
Access Router Settings
Successfully logged in! Configure WiFi settings, change passwords, manage connected devices, setup port forwarding for cameras, and adjust advanced network settings.
Security Recommendation
Change Default admin Password immediately after first login. Navigate to System Tools → Password or Maintenance → Admin Password. Use strong password different from WiFi password.
Viettel Router Login Troubleshooting
Can't Access 192.168.1.1 or 192.168.1.100:8080
If login page doesn't load:
- • Try both IPs: 192.168.1.1 and 192.168.1.100:8080
- • Verify connected to Viettel router network
- • Type full URL: http://192.168.1.1 (not https)
- • For GPON models, include port: :8080
- • Disable VPN or proxy if enabled
- • Clear browser cache or use incognito
- • Try different browser (Chrome, Firefox, Edge)
- • Use wired Ethernet connection
- • Restart router: unplug 30 seconds, plug back
Find Router IP: Windows CMD → type ipconfig → Default Gateway. Mac - System Preferences → Network → Router.
Wrong Password or Forgot Password
Try these solutions:
Default Credentials:
1. Username: admin / Password: admin
2. Username: user / Password: user
3. Check router back label for WEB User ID and Password
Changed & Forgot? Factory reset required. Press RESET button 10-15 seconds. All settings erased. Contact Viettel support for ISP-configured settings.
Find Login Info on Router Label
Viettel routers have login information printed on label (usually on back or bottom):
- • WEB User ID: Admin username (usually admin or user)
- • WEB Password: Admin password (printed on label)
- • WiFi SSID: Default WiFi network name
- • WiFi Password: Default WiFi password
- • IP Address: Router IP (192.168.1.1 or 192.168.1.100:8080)
Tip: Take a photo of router label for future reference. Keep credentials secure.
Factory Reset Viettel Router
Reset to factory defaults:
- Locate RESET button (small recessed hole on back/bottom)
- Use paperclip to press and hold RESET button
- Hold for 10-15 seconds until all lights blink
- Release when lights change (indicate reset)
- Wait 2-3 minutes for router to restart
- Login with credentials from router label
Warning: Reset erases all settings. Contact Viettel support to reconfigure ISP settings (PPPoE, VLANs). You may need technician visit.
Viettel Router Models
Common Viettel fiber optic router models:
| Model | Type | Default Login | IP Address |
|---|---|---|---|
| H640DW | GPON Dual-Band AC1200 | user / user | 192.168.1.100:8080 |
| H640W | GPON Fiber Optic WiFi | admin / admin | 192.168.1.100:8080 |
| G-97RG6M | GPON WiFi 6 Router | admin / admin | 192.168.1.1 |
| TP-Link TL-WR841N | Viettel ISP Version | admin / admin | 192.168.1.1 |
Note: Always check router label for exact credentials. Viettel may customize settings during installation.
Essential Viettel Router Settings
Important configurations for Viettel fiber:
WiFi Security
- • Change default WiFi password
- • Change WiFi name (SSID)
- • Use WPA2-PSK or WPA3 encryption
- • Change admin password
- • Enable MAC address filtering
- • Setup guest network
Port Forwarding
- • Open ports for IP cameras
- • Configure for gaming consoles
- • Setup remote desktop access
- • Enable for security DVR/NVR
- • Forward ports for servers
- • Configure DDNS if needed
Important: Don't change ISP settings (PPPoE, VLAN) unless instructed by Viettel support. Incorrect settings will disconnect your internet.
Frequently Asked Questions
What is the default password for Viettel router?
Default credentials: admin/admin or user/user (for Dasan H640DW/H640W models). Check router back label for WEB User ID and Password printed by Viettel. Each router may have unique credentials assigned during installation.
How do I login to Viettel router?
Connect to Viettel WiFi, open browser, go to 192.168.1.1 or 192.168.1.100:8080 (GPON models), enter credentials from router label or try admin/admin. You'll access router admin panel.
What IP address does Viettel router use?
Standard models use 192.168.1.1. GPON fiber models (H640DW, H640W) use 192.168.1.100:8080 (note the port :8080). Check router label or use ipconfig command (Windows) to find Default Gateway IP.
Why can't I access 192.168.1.1 on my Viettel router?
Try: (1) Use 192.168.1.100:8080 for GPON models, (2) Type http:// not https://, (3) Check you're connected to Viettel network, (4) Disable VPN, (5) Clear browser cache, (6) Restart router, (7) Check router label for correct IP.
How do I change my Viettel WiFi password?
Login to router, go to Wireless or WiFi Settings, find WPA2-PSK Password field, enter new password (8+ characters), click Apply or Save. Reconnect all devices with new password.
Can I reset Viettel router without losing internet?
Factory reset will erase ISP configuration (PPPoE, VLANs). After reset, you'll need Viettel technician to reconfigure internet settings. Only reset if necessary. Instead, try changing just admin password or WiFi settings without full reset.
Where can I find Viettel router login information?
Check router back or bottom label for: WEB User ID (username), WEB Password, WiFi SSID, WiFi Password, and IP Address. Take a photo for future reference. If label missing, try admin/admin or contact Viettel support.