无线 Jobs

My Aruba 500 access point refuses to complete its startup sequence. It reboots repeatedly, flashes an error message on the console, then starts over. I can confirm that an error appears, but I have not yet identified whether it points to firmware corruption, a hardware fault, or a configuration issue. I need an Aruba-certified specialist who understands the unit’s different operating modes, recovery options, and console commands to: • Pinpoint the root cause of this boot failure by reviewing the current console output and any logs we can extract • Guide (or remotely perform) the correct recovery procedure—whether that means flashing new firmware, adjusting boot variables, or restoring a clean configuration • Verify the AP comes back online, joins the co...

I’m facing recurring connectivity and performance issues across my small-office network and need a technician who focuses specifically on network support to step in quickly. The job is entirely remote: you’ll connect to my environment, pinpoint the root cause of dropped connections and sluggish speeds, and then apply a clean, documented fix. Here’s what I expect: • A thorough diagnostic session covering routers, switches, and current cabling layout (where traceable from afar). • Implementation of configuration changes or firmware updates that restore stable throughput. • A concise report outlining the problem, the steps you took, and any preventive recommendations. Experience with common SMB hardware (Cisco, Ubiquiti, MikroTik, or similar) and standa...

NS-3 Network Simulation Task Project Overview I am looking for assistance with a small networking task using NS-3 which can be downloaded via: (ns-allinone-3.35 version). The goal of this task is to work with the provided simulation example and modify it to evaluate network performance metrics. The task focuses on understanding how NS-3 can be used for analyzing communication networks that include both wired and wireless connections. Required Tasks The selected freelancer should: • Modify the source file in NS-3. • Calculate and display the following performance metrics at the end of the simulation: o End-to-end delay o Throughput • Update the client node behavior so it sends more than one packet during the simulation. • Use the MakeCallback() function within th...

I’m facing recurring connectivity and performance issues across my small-office network and need a technician who focuses specifically on network support to step in quickly. The job is entirely remote: you’ll connect to my environment, pinpoint the root cause of dropped connections and sluggish speeds, and then apply a clean, documented fix. Here’s what I expect: • A thorough diagnostic session covering routers, switches, and current cabling layout (where traceable from afar). • Implementation of configuration changes or firmware updates that restore stable throughput. • A concise report outlining the problem, the steps you took, and any preventive recommendations. Experience with common SMB hardware (Cisco, Ubiquiti, MikroTik, or similar) and standa...

I need focused troubleshooting support for an Eaton 93E 40 kVA UPS that is currently showing irregular battery readings after a recent swap-out. The replacement string uses Ritar batteries and I want to be absolutely certain the voltage parameters and overall compatibility are correct before the unit is placed back into full service. What I expect from you: • Walk me through every measurement needed to confirm each battery’s voltage, the total string voltage and any balancing requirements. • Verify, from the Eaton and Ritar documentation, that the chosen model meets the UPS charging profile and cut-off thresholds. • Identify (and help resolve) any configuration, cabling or firmware settings that could be triggering the alarms I am seeing. • Provide a conc...

I have two Siemens Ruggedcom models—RST2228 and RCM30—that must be fully configured for an industrial automation backbone. The switches will sit in front of our SCADA systems, so reliability and deterministic performance are non-negotiable. Core requirements • Build and document the complete configuration from factory default to final running state. • Implement multiple VLANs that logically separate control traffic, engineering access, and diagnostics. I will provide the exact VLAN IDs and naming scheme once we begin. • Establish all necessary trunk and access ports, making sure tagging is consistent across both models. • Verify forwarding, redundancy (RSTP or MRP), and security settings that are best practice for a harsh-environment plant floor. ...