Network Troubleshooting by Arash Deljoo
Concept , Configuration , Verification
Updated on Sep, 2023
Language - English
Troubleshooting at its essence is the process of responding to a problem report (sometimes in the form of a trouble ticket), diagnosing the underlying cause of the problem, and resolving the problem. Although you normally think of the troubleshooting process as beginning when a user reports an issue, you need to understand that through effective network monitoring you may detect a situation that could become a troubleshooting issue and resolve that situation before it impacts users.
After an issue is reported, the first step toward resolution is clearly defining the issue. When you have a clearly defined troubleshooting target, you can begin gathering further information related to it. From this information, you should be able to better define the issue. Then based on your diagnosis, you can propose an hypothesis about what is most likely causing the issue. Then the evaluation of these likely causes leads to the identification of the suspected underlying root cause of the issue.
After you identify a suspected underlying cause, you next define approaches to resolving the issue and select what you consider to be the best approach. Sometimes the best approach to resolving an issue cannot be implemented immediately. For example, a piece of equipment might need replacing, or a business’s workflow might be disrupted by implementing such an approach during working hours. In such situations, a troubleshooter might use a temporary fix until a permanent fix can be put in place.
What will you learn in this course:
What will students learn in your course?
- Troubleshooting IPv4-IPv6 Addressing and Static Routing
- Troubleshooting IPv4 Routing with PING
- Troubleshooting IPv4 Routing with Traceroute
- Troubleshooting EIGRP for IPv4
- Troubleshooting EIGRPv6 and Named EIGRP
- Troubleshooting OSPF Neighbor Adjacencies
- Troubleshooting OSPF Routes
- Troubleshooting OSPF Miscellaneous Issues
- Troubleshooting OSPFv3 Classic Configuration
- Troubleshooting OSPFv3 Address Family Configuration
- Troubleshooting BGP Neighbor Adjacencies
- Troubleshooting BGP Missing Routes
- Troubleshooting PBR
- Troubleshooting IPv4 and IPv6 Redistribution
- Troubleshooting Suboptimal Routing in Redistribution
- Troubleshooting Routing Loops in Redistribution
- Troubleshooting Client Connectivity
- Troubleshooting AP Connectivity
- Troubleshooting IPv4 and IPv6 ACLs and Prefix-list
- Troubleshooting Cisco IOS AAA
- Troubleshooting Device Management
- Troubleshooting Syslog
- Troubleshooting Simple Network Management Protocol [SNMP]
- Troubleshooting IP SLA
- Troubleshooting Netflow and Flexible Net Flow
What are the prerequisites for this course?
- You need to have CCNA/CCNP Level knowledge.
- You can implement all scenarios in GNS3 or EVE-NG.
Check out the detailed breakdown of what’s inside the course
- IPv4-IPv6 Addressing and Static Routing Trouble Tickets 37:12 37:12
- Troubleshooting IPv4 Routing with PING 01:26:50 01:26:50
- Troubleshooting IPv4 Routing with Traceroute 01:00:59 01:00:59
- EIGRP for IPv4 Trouble Tickets 24:35 24:35
- EIGRPv6 and Named EIGRP Trouble Tickets 20:31 20:31
- OSPF Neighbor Adjacencies Troubleshooting 01:19:06 01:19:06
- OSPF Routes Troubleshooting 01:09:32 01:09:32
- OSPF Miscellaneous Issues and Trouble Tickets 59:39 59:39
- OSPFv3 Classic Configuration and Trouble Tickets 33:20 33:20
- OSPFv3 Address Family Configuration and Trouble Tickets 24:51 24:51
- BGP Neighbor Adjacencies Troubleshooting 01:00:22 01:00:22
- BGP Missing Routes Troubleshooting 01:03:48 01:03:48
- BGP Trouble Tickets 35:47 35:47
- PBR Trouble Tickets 17:36 17:36
- Troubleshooting IPv4 and IPv6 Redistribution 37:41 37:41
- Troubleshooting Suboptimal Routing in Redistribution 18:33 18:33
- Troubleshooting Routing Loops in Redistribution 01:06:34 01:06:34
- Redistribution Trouble Tickets 31:58 31:58
- Troubleshooting Client Connectivity 43:46 43:46
- Troubleshooting AP Connectivity 18:35 18:35
- Troubleshooting IPv4 and IPv6 ACLs and Prefix-list 49:15 49:15
- Cisco IOS AAA Troubleshooting 44:57 44:57
- Device Management Troubleshooting 01:34:35 01:34:35
- Syslog Troubleshooting 01:15:54 01:15:54
- Simple Network Management Protocol [SNMP] Troubleshooting 01:23:53 01:23:53
- IP SLA Troubleshooting 48:30 48:30
- Netflow and Flexible Net Flow Troubleshooting 01:08:07 01:08:07
Arash is an experienced Cisco engineer with 15 years of experience working in network engineering, communications, and education–particularly in training with E-learning companies. He earned a MSc in power electrical engineering from Tehran Polytechnic. He produces training courses in Persian and English.
The total number of his students in face-to-face and online teaching courses has been more than 10,000.
User your certification to make a career change or to advance in your current career. Salaries are among the highest in the world.
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