What is Common Troubleshooting Protocol of IP Network ?

In continuity of our subject Layer wise Troubleshooting Technique of Complex IP Network :

 Let’s move ahead in this learning. We have learned so far

Common Troubleshooting Protocol of IP Network

  • Layering ( Covered in our previous post – Click here )

Remaining points are covered here

  • Chunking
  • Segmenting
  • Replacing


As per HybridMedia Works Website Designer in Rawalpindi ,Chunking is the second best way to dig out fault in IP network. Using the display current-configuration command, you can view the structure of the configuration file of the router.

The configuration file is composed of:

  • Global configuration
  • Physical interface configuration
  • Logic interface configuration
  • Routing configuration

The configuration file can also be divided into the following sections:

  • Administrative section: includes the router name, password, service and log
  • Port section: includes the address, encapsulation, cost and authentication
  • The routing protocol: includes the static route, RIP, OSPF, BGP and routes importing
  • The policy: includes the routing policy, policy-based routing and security configuration
  • Accessing section: includes the main console, Telnet login and dialing
  • Other applications section: includes the VPN configuration and QoS application

The preceding classification provides a rough framework for the fault location. You can categorize a fault and thus narrow down the possible causes of the fault.

For example, the output of the display ip routing-table command contains only the direct route. Where does the fault occur?

Chunking the configuration file, you can locate three sections that may lead to the fault.

  • The routing protocol: If the routing protocol is not configured or configured incorrectly, the routing table may be null.
  • The routing policy: If the access list is set incorrectly, the routing table may not be updated normally.
  • The port: If the interface address or mask or authentication is set incorrectly, the fault may occur in the routing table.


Roadmap of Segmenting

Expert of ikonicsolution Web Designing in Islamabad says that If two router that span the line provided by the ICT office cannot communicate with each other, the segmenting method can be adopted.

You can inspect the following sections to locate the fault:

  • The section between the host and the LAN interface on the router
  • The section between the router and the CSU/DSU interface
  • The section between the CSU/DSU interface and the interface of the telecommunication office
  • WAN circuit
  • The router


Replacing is a common method used to identify the hardware failure.

For example, if you suspect that the fault lies on the network cable or interface module, you can replace the cable or module with another one in good condition.