National Research and Education Network
Education Cloud Data Center
Multi-Channel HD Telemedicine Solution
Over The Top/Multi-Tenant Data Center (OTT/MTDC)
Internet Exchange Point (IXP)
Internet Access Provider (IAP)
Design & Simulation
Planning & Analytics
Oil & Gas IoT
HPC & Operations Management
Digital Urban Rail
Retail Cloud Platform
Enterprise Data Center
Enterprise Cloud Communications
Network Management System
Buy from Huawei
If you want to get more information about your project, you can submit your information and we will contact you as soon as possible.
If your company has signed an eDeal contract with Huawei, please buy your required product/solution via the link below.
Buy from resellers
Search for a nearby reseller and get direct contact information.
Become a Partner
Resources and Support
Huawei Authorized Learning Partner
Huawei Authorized Information and Network Academy
After we configure 155M services on OSN equipments, if these services don’t be used, OSN equipments will report RLOS and AUAIS alarms. However, recently, a customer said they used SPQ4 and SEP1 boards of OSN3500 configure 155M services, alarms that OSN3500 reported were strange. When all the ports of SPQ4 and SEP1 boards were loop-back with cable, some trails reported AUAIS, some trails reported HPUNEQ and HPTIM, even for some bidirectional services, AUAIS was reported from A to B, HPUNEQ and HPTIM were reported from B to A. The customer queried why the same situation (loop-back with cable), but 155M services reported different alarm.
When 155M services are configured but no real 155M services transmitted by it, if we don’t loop back the ports of SPQ4 or SEP1 boards, then, SDH boards will report AUAIS; if we loop back the ports, there are two kinds of situation.
1. If 155M services are configured before loop-back, AUAIS will be reported, even loop back the ports.
2. If 155M services are configured after loop-back, AUAIS or HPUNEQ/HPTIM is possible, it lies on distance between two stations, even time of downloading the configuration. If the distance is large, probability of AUAIS is large; on the contrary, HPUNEQ/HPTIM is large. However, whether AUAIS or HPUNEQ/HPTIM, as long as undo loop-back, only AUAIS is reported, then loop back again, only AUAIS exists.