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Network Troubleshooting and Support

Nine Tips for Designing a Small Business Network
Technology professionals can get wrapped up in a lot of detail while planning and designing systems. It is up to the business to ensure that the needs and requirements of the business are considered throughout the planning process. More ...

How to Repair a Damaged Fiber Optic Cable
A cut or damaged fiber optic cable can take your network down. it is possible to quickly fix the cable with the right tools. This article shows you how to splice a cut fiber optic cable back together with a fiber optic stripper and cutter and a fiber optic crimper. More ...

Troubleshooting the Intermediate System to Intermediate System (IS-IS) Protocol
Troubleshooting issues with the Intermediate System to Intermediate System (IS-IS) protocol is pursued thru an investigation with the Cisco show and debug commands and their options. More ...

Restrict User's Logon Hours and Access to Computers
For each user account you can restrict the hours during which the user is allowed to log on and you can restrict a user to only certain computers. More ...

Campus and WAN Multilayer Network Design
The idea for defining a multilayer campus model was developed by Cisco to improve campus network performance, availability and scalability. There are three layers that comprise the campus multilayer model are the access layer, distribution layer and core layer. More ...

How to Design a Highly Reliable Fiber Optic Network
What happens if a major fiber optic cable is cut or a major hubbing location is destroyed? This article is about the survivability of a well designed fiber network. More ...

What is the Difference Between NAT and PAT?
NAT works by mapping a pool of public IP addresses one-to-one to the private IP addresses, keeping the port number intact. PAT uses a single public IP address and maps multiple private IP addresses to it by using different port numbers. More ...

Structured Network Troubleshooting Methodology Step 4 Establish a Plan of Action to Resolve the Problem and Identify Potential Effects
Step 2 in a structured network troubleshooting methodology is to establish a theory of probable cause. Step 3 is to Test the Theory to Determine the Cause. Here we discus Step 4, Establish a Plan of Action to Resolve the Problem and Identify Potential Effects. More ...

Steps For Designing a Crisis Management Plan
There are six steps for defining a crisis management plan that can be easily remembered using the word CRISIS. Use the steps of CRISIS to be ready to deal with emergencies that your organization might face. More ...

What is Port Forwarding?
Port forwarding transfers network traffic from one network port to another, either on the same computer or a different computer. This article demonstrates the most common scenarios for port forwarding. More ...

Structured Network Troubleshooting Methodology Step 6 Verify Full System Functionality and, if Applicable, Implement Preventive Measures
Step 4 in a structured network troubleshooting methodology is to Establish a Plan of Action to Resolve the Problem and Identify Potential Effects. Step 5 is to Implement the Solution or Escalate as Necessary. Here we discus Step 6, Verify Full System Functionality and, if Applicable, Implement Preventive Measures. More ...

Wireless AP (Access Point) Placement
A wireless using more than one access point needs an overlap of coverage between APs to allow uninterrupted roaming, however, those overlapping coverage areas should not use overlapping frequencies. More ...

Structured Network Troubleshooting Methodology Step 7 Document Findings, Actions, Outcomes, and Lessons Learned
Step 5 in a structured network troubleshooting methodology is to Implement the Solution or Escalate as Necessary. Step 6 is to verify full system functionality and, if applicable, implement preventive measures. Here we discus Step 7, document findings, actions, outcomes, and lessons learned. More ...

The Secret of Maintaining Your Fiber Optic Network
During fiber optic network maintenance it is often necessary to identify a specific fiber without disrupting live service. A fiber identifier allows you to do this. More ...


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