One day, he argued with a salesman of inspur. He said that ADSL + vrouters share the Internet and I think shared Internet can be used without a vro, I have not seen what the vro looks like), because I have entered the ADSL configuration interface.
I tried it myself when I was free. Good luck. The ADSL modem at hand is ql1880, with built-in routing and pppoe protocols. Its IP address is 192.168.1.1, And the Logon account and password are both root.
Disconnect the telephone line, log on to the ADSL cat, select quick configuration, and change the encapsulation protocol from 1483 to pppoe LLC, VPI: 8, VCI: 35, bridging: switch from on to off, IGMP not changed, IP address 192.168.1.1, subnet mask: 255.255.255.0, default route: changed from off to on, gateway not changed, username input XXXX @ xmadsl, password input ****, the DNS usage remains unchanged. Enter Xiamen DNS: 202.101.103.55, 202.101.103.54.
Set these submissions. Set the network connection attribute of XP to IP: 192.168.1.5, subnet mask: 255.255.255.0, and gateway to 192.168.1.1. Then you can plug in the telephone line and access the internet. OK, simpler than I thought.