2xCisco C3900 switcges OS Upgrade & QoS Setup

@vili1977

Hello. I would like to help you with update IOS on C3900 and install Qos/shaper rules. I have experience. Please read my feedbacks. Thank you.

@farooqtahir2013

As an experienced network, cybersecurity, VoIP, and system engineer with over a decade of professional work under my belt, I am more than equipped to handle your Cisco C3900 switcges OS upgrade and QoS setup. My familiarity with both small and enterprise-sized companies in designing, planning, and implementing network infrastructures makes me suitable for the task. Throughout my career, I have worked not only with Cisco but a wide variety of vendors which have helped me develop a deep understanding of best practices across different brands. My strong command over network administration (Routing, Switching, VPNs), VOIP, Security (Cisco ASA, Fortinet , Palo Alto, Checkpoint, Sonicwall), and other relevant skills ensure that I can proficiently deliver your project requirements. Moreover, my 24-hour availability guarantees quick response times to any issues that might arise during or even after the project. With me on board, you can rest assured that your Cisco C3900 would be upgraded to the latest IOS release maintaining its integrity and security. Additionally, the QoS policies will be expertly implemented ensuring efficient traffic shaping and bandwidth management for all critical elements like voice and video without compromising the performance of non-critical applications. Let's get started on making your network even more robust!

@engkarimismail

As an accomplished IT professional who has diligently honed my skills in networking, specifically with Cisco infrastructure and the CLI, I am excited to offer my services for your Cisco C3900 switch upgrade and QoS setup. My extensive experience in network administration, engineering, and security ensures that not only will your IOS upgrade be handled meticulously, but also all QoS elements meticulously tuned to suit your unique requirements. I understand the criticality of ensuring that all interfaces are upheld and all downstream Catalyst switches are in alignment with the updated policies on the C3900 for an end-to-end effective QoS strategy. My proficiency in class-maps, policy-maps, and interface service-policies is second to none, guaranteeing that clear-cut QoS configs will be applied and saved for optimal performance management. To ensure smooth execution, I am proficient in using TFTP/SCP clients like putty/SecureCRT. I also have a strong proactive approach to dealing with unexpected issues—something which is crucial during complex upgrades like this one. Moreover, I'm not just focused on project completion but also providing you a complete hand-off package with comprehensive documentation outlining the commands used as well as rollback steps, ensuring you're always in control of your system. Choose me for this crucial project and you can be confident that you'll receive high-quality services from an expert committed to your absolute satisfaction.

@mobimubasir

Hello there, I can help identify the correct stable IOS image for your Cisco C3900, stage it via TFTP/SCP, perform the upgrade during your maintenance window, and verify the router health afterward with proper show outputs. I can also configure modular QoS for shaping, bandwidth control, voice/video priority, align downstream Catalyst trust settings, and provide a brief handoff with commands, validation results, and rollback steps.

@engruhulajom

Hello Dear, I’m an experienced Full-Stack Developer with 10+ years of expertise in web and mobile application development, delivering scalable, secure, and high-performance solutions for clients worldwide. I understand you need a professional solution for your project. I have successfully developed similar systems, including dashboards, CRM platforms, educational portals, API integrations, and custom web applications, ensuring quality, reliability, and user satisfaction. My Expertise: HTML/CSS, JavaScript, Bootstrap, Tailwind CSS, JQuery, VueJS, ReactJS, PHP, Laravel, Python, Swift, C#, C Programming, Rust, Ruby on Rails, REST APIs, Payment integration, Database Design, SQL databases, Linux, Git, Docker, Laravel Forge, Java, Kotlin, React Native, and mobile app development. Feel free to share additional details. I’m ready to discuss the best approach. Looking forward to hearing from you. Best regards, Md Ruhul Ajom.

@marcusd39

Dear Client, Good afternoon . How are you? I hope this proposal finds you well. I'M A CERTIFIED & EXPERIENCED EXPERT, WELL VERSED WITH THE REQUIREMENTS FOR YOUR PROJECT "2xCisco C3900 switcges OS Upgrade & QoS Setup." This is to inform you that I have KEENLY gone through your project description, CLEARLY understood all the project requirements as instructed in your project proposal and this is to let you know that I will perfectly deliver as desired. Being in possession of all stated required skills, (Network Engineering, Network Monitoring, VoIP, Network Administration, Network Security, Linux and Cisco), as this is my field of professional specialization having completed all certifications and developed adequate experience in the respective field, I hereby humbly request you to consider my bid for professional, quality and affordable services that meet all your requirements. I always guarantee timely delivery and unlimited revisions where necessary hence you are assured of utmost satisfaction when working with me. Please send me a message so that we can discuss more and seal the project. WELCOME.

@shaxzodj

With my several years in the field of network administration, I have amassed a comprehensive description of experience with Cisco equipment and a strong understanding of executing complex upgrade projects on both routers and switches. Specifically, I have proficient knowledge in IOS image selection, securing it from Cisco, staging it on TFTP/SCP server and applying firmware upgrades thoroughly. My commitment to perfection is shown in my usual practice of conducting post-upgrade health checks such as 'show version, show platform, show log' - this ensures your network is optimized at the end of the project. Furthermore, my experience in implementing Quality of Service (QoS) on Cisco devices aligns perfectly with your project requirements. I can guarantee that after upgrading your Cisco C3900 to the latest IOS release, I will establish traffic shaping for key subnets, manage bandwidth to keep non-critical traffic in check and implement priority queuing for voice and video. I understand the importance of well-commented policies in the running-config for ease of maintenance which you will be assured of as well.

@nintysix96

Bid amount and timeline above are rough placeholders , we'll firm those up once we talk through the maintenance window and what remote access looks like on your end. Looks like a solid, well-scoped job. You've got two C3900s that need a clean IOS upgrade plus a properly structured QoS policy pushed end-to-end through the downstream Catalyst switches. The goal isn't just getting the routers on current code , it's making sure voice and video traffic actually gets the treatment it needs once the policy is live, with configs you can read and maintain yourself afterward. Here's how we'd approach this: - Image selection and staging: We'll pull the correct IOS bundle for your C3900s from Cisco's software center, verify the MD5, and stage it on your TFTP/SCP server before touching anything. - Upgrade and ROM-mon check: We'll carry out the upgrade during your maintenance window, verify ROM-mon version post-boot, and run show version, show platform, and show log to confirm everything came back clean. - QoS policy build: Class-maps and policy-maps for traffic shaping on your key subnets, bandwidth policing for non-critical flows, and LLQ/priority queuing for voice and video , all commented in the running-config so the logic is readable. - Catalyst alignment: Trust DSCP/CoS on the uplink ports of the downstream switches and adjust queue-mapping so the C3900 policies are honored all the way down. - Hand-off doc: A short document covering the commands used, what each policy does, and rollback steps if you ever need them. After a quick scope chat we'll send over a written proposal with a firm price and timeline. Want to set up a short call this week to walk through the maintenance window and confirm remote access details? Best, 96 Studio

@letswork92

Upgrading the Cisco C3900’s IOS and implementing QoS is a critical task that requires precision and expertise to ensure network reliability. With over 12 years of experience in network management, I specialize in Cisco systems and can guide you through identifying the correct firmware bundle and securing it from Cisco. My approach will include staging the firmware on your TFTP/SCP server before executing the upgrade. Post-upgrade, I will perform a thorough health check, ensuring all interfaces are operational. The QoS setup will be tailored to your needs, including traffic shaping and bandwidth management, with all configurations clearly documented for your future maintenance. Additionally, I’ll align the Catalyst switches for optimal performance in line with your C3900 policies. My toolkit includes Cisco CLI and necessary clients like SecureCRT for seamless execution. Could you specify any particular subnets or applications that require priority handling for QoS?

@KurtSiebritz

LET'S MAKE SURE YOU ONLY BUILD THIS ONCE. Facing the challenge of upgrading your Cisco C3900 switches to the latest IOS release and setting up QoS effectively can be complex. My approach involves carefully selecting the correct firmware bundle, executing the upgrade, and implementing tailored QoS elements like traffic shaping, bandwidth management, and priority queuing for voice and video traffic. For the downstream Catalyst switches, I will align basic QoS settings to ensure end-to-end policy adherence. With a 5-star rating, I prioritize strong communication and fast response times, focusing on fostering long-term relationships. By delivering verified upgrade completion, detailed QoS configurations, and seamless switch alignment, I aim to provide value beyond the project's scope. How can we streamline the upgrade process and QoS setup to enhance your network performance effectively? Best, Kurt

@henrry098

Hello, I am a Network and Security Engineer with extensive hands-on experience managing Cisco routers and Catalyst switches. I can help you identify the correct IOS image, perform a safe upgrade, verify ROMMON and system health, and implement QoS policies for voice, video, and critical traffic

@Agares711

Hi there, I am a Computer Science engineer specializing in network infrastructure. I can handle your C3900 upgrade and QoS alignment cleanly within your exact maintenance window. The Cisco 3900 ISR G2 series requires careful handling for its final 15.x releases. I will ensure we select the correct universal image, verify the MD5 checksum prior to reload, and implement a robust MQC policy that maps flawlessly down to your Catalyst switches. Execution Plan: 1. Image Staging & Upgrade Identify the correct 15.x .bin release for your hardware limits. Stage it via TFTP/SCP to flash:, verify MD5, and check ROMMON compatibility. Update the boot variable, reload during the window, and verify stability (sh ver, sh plat, sh log). 2. MQC QoS Implementation (C3900) I will build heavily commented, modular configs: Class-Maps: Match DSCP EF (Voice), AF41 (Video), and target subnets. Policy-Maps: Priority Queuing (LLQ) for Voice/Video, bandwidth limits for background traffic, and parent-level shaping for your WAN commit. Application: Attach service-policy outbound. 3. Catalyst Alignment & Testing Configure downstream switches to trust incoming markings (e.g., mls qos trust dscp). Verify queuing end-to-end with iPerf/ping using ToS bits. Deliverables: Upgraded C3900 with health-check logs. Commented QoS configs & updated switch settings. Hand-off document with commands and rollback steps. I have my SecureCRT and TFTP tools ready. Let's schedule the maintenance window.