The service configuration of PPPoE users is normal
Answer:
The PPPoE user account and authentication method are correct
Answer:
The link between the MDU uplink and the BRAS is OK
Answer:
The MDU management IP is configured correctly
Answer:
A, B, COn Huawei devices, PPPoE diagnostic/simulation tools verify the end-to-end PPPoE procedure (Discovery and Session), and—when credentials are supplied—authentication (PAP/CHAP) as well:Successful PADI/PADO/PADR/PADS exchange confirms Layer-2 reachability to the BRAS (option C).A successful session establishment and authentication indicate that the service configuration for PPPoE users is correct and the username/password & auth method are valid (options A and B).The MDU management IP (option D) is unrelated to the PPPoE access simulation itself; PPPoE runs over the subscriber VLAN/port/uplink toward BRAS, not via the MDU’s management plane, so simulation success does not prove the management IP configuration.These behaviors align with Huawei’s PPPoE diagnostic/monitoring command descriptions that detail session status, discovery phases, and authentication verification for fault location
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