Version information: ME60 (V100R005C02B01B), S8505 (version 3.10)
Networking description: The ME60 is connected to a downstream S8505 and several downstream NE20s. The upstream device of the ME60 is NE80E-2. The ME60, NE80E-2, and other upstream devices are in OSPF backbone area 0, whereas the S8505 and the NE20s operate in different NSSA areas.
Fault symptom: Some users of the S8505 (functioning as the gateway) cannot access the Internet.