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Founder at PM Networking | Cisco Instructor (CCIE | CCNP | CCDP | CCNA | CyberOps | DevNet | CCSP | Service Provider | Wireless | SD-WAN) | Corporate Trainer | Network engineer | Youtuber | Trained 2000+ professionals |

Step-by-step process to troubleshoot routing and switching issues in networks for network engineer: 1. **Gather Information:** - Understand the reported problem. - Collect network diagrams, configurations, and any recent changes. 2. **Physical Layer Check:** - Verify cable connections, interfaces, and physical components. - Ensure devices are powered on and functioning. 3. **Basic Connectivity Tests:** - Use tools like `ping`, `traceroute`, or `arp` to test connectivity between devices. - Check for connectivity issues between specific network segments. 4. **Check Device Configurations:** - Verify device configurations for routing tables, VLAN settings, access control lists (ACLs), etc. - Look for any misconfigurations or inconsistencies. 5. **Routing Protocols:** - Verify if routing protocols (OSPF, BGP, etc.) are correctly configured and neighbors are established. - Check routing tables for correct information and route advertisements. 6. **Switching Configuration:** - Review VLAN configurations, spanning-tree settings, and port configurations. - Ensure proper VLAN tagging and trunking between switches. 7. **Traffic Analysis:** - Use network monitoring tools to analyze traffic patterns, identify bottlenecks, or anomalies. - Look for excessive broadcasts, collisions, or errors. 8. **Hardware Diagnostics:** - Check hardware health using device-specific diagnostic commands. - Look for hardware-related errors or failures in logs. 9. **Firmware/Software Updates:** - Ensure devices are running the latest firmware/software versions to address known bugs or issues. 10. **Isolation Testing:** - Temporarily isolate segments or devices to narrow down the problematic area. - Verify if the problem persists within the isolated segment. 11. **Collaboration and Documentation:** - Collaborate with colleagues or vendor support if needed. - Document each step taken, changes made, and their effects. 12. **Implement Solutions:** - Apply fixes or configuration changes based on identified issues. - Test to confirm that the problem has been resolved. 13. **Monitor and Follow-up:** - Monitor the network after changes to ensure stability and functionality. - Follow up with users or stakeholders to confirm resolution. #troubleshooting #routingandswitching #ccna #ccnp #networkengineer

Narendra Rajendra Gupta

Senior Network & Security Engineer || Specializing in Cloud Migration | Ensuring Seamless Transition and Secure Connectivity || Azure |AWS | ZScaler | VMWare NSX -T | Palo Alto | Cisco | Fortinet | Citrix Netscaler | F5

10mo

Looks pasted from ChatGpt ..but usefull 👍

Nikhil Shinde

Helping enterprises in security transformation

10mo

Thank you for sharing

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Kapil CCNP

associate consultant

9mo

I'll keep this in mind

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Snkalp Mathur

CCNA ( Cisco certified network Associate) routing & switching.

10mo

Thank you sir for share this important information about how to troubleshoot routing & switching issues. 👍💯

OKELLO ROBERT

Cyber Security Enthusiast|IT Field and Desktop Support|CCTV,ELV,ALARM & Security Systems|Networking&Surveillance|Tetra Radio Maintenance and Support|IT Technical Support

10mo

Thanks for posting

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Wissal Boughanmi

+2K 🚀 Sophos Central Engineer | Linux Administration|CCNA | Master’s Degree in Network Administrator Systems

10mo

Thank you for sharing

Irshad Bhati

Network Engineer @ Wipro Limited | CCNP, CCNA, Wireless

10mo

Thanks for sharing, usually I follow below pattern- 1,2,3,4,6,5,10,7,8,9,11,12,13

Ruchi Panday

fault management specialist

10mo

Thanks for posting

Muhammad zahid Iqbal

Network Security Administrator @ NUST | CCNA, Cyber Operations

10mo

Informational keep posting brother

Sagar Palkar

Cybersecurity|SDWAN | Cloud | Implementation | Operation | Delivery

10mo

Thanks for sharing

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