1. Alarms in Node 41 and in Node 1 are normal;
2. Check whether the services are successfully configured through the command below.
BID VCTRUNK RESPOND_RCV NORMAL_RCV TOTAL_SEND
3 1 0 0 5
The frame test feedbacks that no response frame is received at the local node. That is implication of error configured services.
3. Check the SDH service configuration. No abnormality is found. Check the interface attributes of the Ethernet boards, but no fault is found, either. The Ethernet service configuration is normal.
4. Configure the Ethernet services once again. In Node 41, of the internal port attributes of the EFS, the mapping protocol was LAPS, and the bit sequence of FCS was little endian. 5. In that metropolis network, all the Ethernet boards employ GFP protocols and big endian (bit sequence of FCS). In Node 41, the unsuccessful service configure is due to different protocols. Modify the protocol in Node 41, and the services runs normally.