Engineer Lab

In a 112-site H3C S6500 trial, users reported peak-hour gaming lag even though interfaces looked healthy and throughput tests were acceptable. Troubleshooting showed one equal-cost uplink carried almost no traffic because its expected upstream route was missing, exposing a route-table programming abnormality.

During a Magyar Telekom IPTV data-center survey, we measured approximately 25 meters between the existing -48V source and the planned PDF cabinet. With a 27 kW maximum design load and 562.5 A calculated current, the route required the power feed to be redesigned before equipment installation began.

In the Myanmar Telenor project, transport links were not sized from downstream port speed alone. As radio-site traffic converged toward the core, required capacity increased from generally GE at microwave, to 10GE access, 40GE aggregation and 200GE planned backbone transport, with expansion interfaces reserved at convergence points.

After the RAN and core sites were defined, we still needed a physical path between them. In the Myanmar Telenor project, we separated radio sites, microwave, fiber, WDM and transport locations into map layers, then combined those layers to reuse existing resources, identify aggregation points and fill connectivity gaps.

In the Myanmar Telenor network-planning project, RF simulation gave us candidate 4G site locations-not a final construction list. We compared those locations with existing infrastructure, revalidated coverage and reused suitable sites where practical, while building new sites only when the technical requirement demanded it.

In a 2017 Vivacom broadband upgrade, replacing aging MSAN equipment at the original sites was not enough. Moving from ADSL/ADSL2+ to VDSL Vectoring introduced shorter copper-loop planning limits, so suitable MDF locations were selected as new remote access sites closer to subscribers while nearby areas remained served from the replacement MSAN.

In a real university campus project, large venues such as cafeterias, great halls and stadium-related spaces could approach 2,000 users. Although ideal open-space AP coverage was referenced at up to ~100 m, the final planning radius was reduced to approximately 30 m because concurrent-user capacity and practical RF conditions mattered more than maximum signal reach.

Huawei AirEngine 6776-56TP supports switching from three-radio operation to 2radio-standard mode on the verified V600R023C10 and V600R024C00 software branches. This article explains the fixed radio hardware, how a radio-mode change differs from disabling one radio, and how to confirm the effective mode.

Huawei S5735-S and S5735-S-V2 switches cannot operate as members of the same stack. Although their names are similar, they belong to different product generations and software platforms, so expansion and replacement models must be selected from the correct series.

Huawei AirEngine 5760-51 can operate without a local wireless controller when it is running in Fat or Cloud mode. This guide explains how to identify the current AP mode, why used units may not open a Web interface, and when a Huawei AC is still required.