RTN950 version is V100R003C02SPC200. Many RTN950s can not be reached from U2000. In U2000 GUI, many RTN950s are in grey color. Customer can not do any configuration for those grey color RTN950s.
1.Check Topology related to service and OAM of RTN950. Attached file is the topology.
2. Check routes between dedicate RTN950 site and U2000. RTN950 directly connect to Huawei ATN910I for OAM connection. Check ATN910I routing-table, which have both routes to RTN950 management IP and U2000 managment IP. Ping&Traceroute RTN950 and U2000 management IP from ATN910I is ok.
3. Check routing table of RTN950 and found gateway IP address is incorrect, which is OAM IP of another RTN950. And the routing is learned via ospf
4. Check ospf configure of RTN950 and found that OSPF was enabled between RTN950 devices.
Based on RTN950 OAM design, its gateway should be the IP of carrier ethernet network ATN910I connected. However, OSPF was enabled in default mode and gateway was learned via OSPF incorrectly.
?Resolution Summary?Disable OSPF configure at related RTN950 devices.
?Resolution Details?Disable defualt OSPF configure at related RTN950 devices, then default static gateway configure take effect. The problem was solved.
OSPF configure is enable in default at all RTN950 devcies. If your OAM design need to use static gateway mode, please disable ospf configure of RTN950.