TP-Link Archer VR2100 - Appendix: Troubleshooting; T1.How do I restore my modem router’s configuration to its factory default settings?; T2.What should I do if I forgot my password?; T3.What should I do if I cannot log in to the modem router’s web management page?

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Chapter 16
Administrate Your Network
4. You can also go to Traffic Monitor List to view the traffic usage of all interfaces.
16. 11. CWMP Settings
The modem router supports CWMP (CPE WAN Management Protocol), also called
TR-069. This collects information, performs diagnostics and configures the devices
automatically via ACS (Auto-Configuration Server).
1. Visit http://tplinkmodem.net, and log in with your TP-Link ID or the password you
set for the router.
2. Go to Advanced > System Tools > CWMP Settings page.