Category Archives: OSN500 /OSN550

Abnormal performance record in tributary board of ONS500

Query performance of tributary board on OSN 500,there has E1 performance in T1 service: :per-get-curdata:9,1,0,1,perall,15m;                                          PER_GET_CURDATA                                                BID   PERIOD  STARTTIME                      EID                   OPPORT  CHAN          VALUE        9     15m     1990-01-03 01:45:00+08:00      t1_les_sdh            1       1             214          9     15m     1990-01-03 01:45:00+08:00      t1_lses_sdh           1       1             214          9     15m     1990-01-03 01:45:00+08:00      e1_les_sdh            1       1             214   //E1 performance      9     15m     1990-01-03 01:45:00+08:00      e1_lses_sdh           1      … Read More »


Why just get 10M by using MAC in loop test on EFT8 board of OSN500

One day, x operator report that they use ethernet tester to test an EPL service between OSN3500 and OSN500 and set MAC in loop, they just get 10M bandwidth when bind 2 VC3 OSN3500     N2EFS4 OSN 500     EFT8 none Because the chip of EFT8 board has limition 1,Because OSN500 use SD579 and BCM5248 chip to realize ethernet service transimit function. 2,When BCM5248 chip has not finished negotiation, such as not connct lan cable, lan cable is cut off, or the SMI path which connect PHY and MAC chip, it will work at 10M mode defaultly 3,The working mode of SD579 chip will select the value of PHY chip. 4,when SD579 set MAC in-loop, software will cut off SMI path, this time PHY chip will work at 10M, so MAC will work at 10M. Customer test using MAC inloop, the chip will work at 10M mode defaultly, so customer can only get 10M bandwidth. N/AAsk customer to change the test method, use tester to loop or create two EPL service to use lan cable to loop, the bandwith is ok The EFT8 board of Huawei optix OSN500 has limition, so don’t use MAC in-loop to test the bandwith

Cautions for the Upgrade Failure on OptiX OSN 550

Summary: During the upgrade of an Optical transmission OSN 550 earlier than V100R007C10, if the NE has a TNH2EGT1 board, the SCC switching performs repeatedly in the process of activation. After the SCC switching times out, the NE rolls back to the original version, resulting in an upgrade failure. [Problem Description] Fault symptoms: During the upgrade of an… Read More »

Beware of Data Service Interruption on EGT1 boards of OSN 500

[Problem Description] Trigger conditions: The problem occurs when some TNH1EGT1 boards of OSN500 have been working for 72 hours or less. Note This problem does not necessarily occur on each TNH1EGT1 board. Those that have been properly working for 72 hours will not have this problem. Fault symptoms: 1. Services carried by the the above… Read More »