The user accesses the network through PPPOE dial-up, and the "error 678" dial-up failure error occurs when the number is dialed, and the IP address cannot be obtained. The possible reason is?

The user accesses the network through PPPOE dial-up, and the "error 678" dial-up failure error occurs when the number is dialed, and the IP address cannot be obtained. The possible reason is?
A . BRAs have no user address pool configured
B. LCP negotiation failure
C. Incorrect username and password
D. Too many OLT service port access users

View Answer

Answer: B