Q: Normally the OLT machine product(such as Mini OLT product) manual indicates that the ratio of single PON port access is 1:128. How should this indicator be verified?
A: single PON 1:128 access specification, which means that single PON port can support 128 terminal and register access at the same time.
Rayin Technology Laboratory adopted an extreme full configuration way for our Mini OLT product to verify this indicator. Let’s see testing performance as follows:
1. First, installation of test environment
Set up a complete test topology in accordance with the 1:128 spectral framework, and the receiving sensitivity point of all ONUs is calibrated to the specification, such as -28db, the most harshest optical power boundary condition. The OLT and 128 unit ONUs adopt independent power supply circuits, and each ONU supports independent power on-off control and better to eliminate the interference of the power supply linkage on the registration process of mini olt gpon. The test is performed through the olt machine to verify the stability and registration performance under extreme optical power conditions.
2. Second, carry out two core verification tests
2.1Batch power-on and online testing of ONU
Keep OLT running normally, turn off all 128 ONUs and then power them on simultaneously, and record the time it takes to finish the registration and successfully launched of mini olt gpon. The test needs to be repeated more than 100 times, and verify that all ONUs are stable, quickly complete the registration, no failure or abnormal lag through the olt machine test process.
2.2 OLT power-off restart recovery test
Keep all ONUs power on, restart the OLT machine, and record time for 128 ONUs complete the registration and recovery online of mini olt gpon. Through multiple rounds of repeated tests, ensure that after OLT restarting each ONUs could restart quickly, stable, no terminal disconnection or registration anomaly issues.
2.3 Full configuration with flow rate test
On the basis of all the steady launch of 128 ONUs, through the traffic tester to simultaneously appling downlink full-bandwidth service traffic for all ONUs, with the limit condition of the light power sensitivity, carry out 72 hours stress test for mini olt gpon. During the testing process, we continuously monitored various key indicators, including the online status and registration stability of each ONU, the throughput and packet loss rate of PON ports and uplink ports, the CPU/memory usage rate of the OLT equipment, and the core working parameters of the optical modules of Mini olt. We required there is no abnormal disconnections of ONUs, no packet loss at the service ports, and no abnormal fluctuations in the equipment's operating parameters throughout the testing process. The target was to verify the long-term stability of the equipment under the full press scenario.
3.F&Q
Q1: How to check OLT machine PON port access ratio?
A: You can check it through the OLT machine web interface, CLI commands, or management software.
Q2: What affects the mini olt gpon access ratio?
A: The main factors include splitter ratio, bandwidth requirements, and the number of connected users.
Q3: Does a higher access ratio mean better performance, such as mini olt gpon?
A: No. A higher ratio improves resource utilization but may reduce bandwidth per user.
Q4:: How does splitter ratio affect PON access formini olt?
A: A higher splitter ratio supports more users but increases optical loss.
4. The perseverance of Rayin Technology
Limited to professional test conditions and technical capabilities, many users are easily entering two extremes in the OLT machine selection. A class of users only recognize the frist class brand equipment. Such users, in scenarios with limited budgets, often find themselves in a dilemma between cost and equipment reliability. Another type of users merely focus on low prices, like the low price of mini olt in bangladesh market, mistakenly believing that if the port specifications are the same, the performance of the devices will also be the same. When choosing, they only consider the lowest price. However, this choice of ignoring product quality and long-term stability will gradually expose various problems as the project runs. The resulting losses are often much greater than the price difference of the equipment itself. Rayin Technology (www.rayin.com) will summarize the common problems encountered during product selection , hoping to help everyone clarify their understanding and avoid selection mistakes.
