Network Troubleshooting
Network Troubleshooting
Network troubleshooting is the process of identifying, diagnosing, and resolving
network-related issues to ensure reliable communication between devices.
- Check physical cable connections.
- Verify IP address, subnet mask, and default gateway.
- Test network connectivity using ping.
- Use ipconfig or ifconfig to verify network settings.
- Check DNS resolution using nslookup.
- Use tracert or traceroute to identify routing issues.
- Restart the router, switch, or affected device if necessary.
- Review firewall and antivirus settings that may block network traffic.
Network Monitoring
Network Monitoring
Network Monitoring is the continuous process of observing and analyzing network devices,
servers, applications, and traffic to ensure optimal performance, availability, and security.
It helps detect outages, performance bottlenecks, unusual activity, and potential failures
before they impact users.
- Monitor network device health and availability.
- Track bandwidth usage and network performance.
- Detect network outages and connectivity issues.
- Receive alerts for device failures or threshold breaches.
- Monitor CPU, memory, and interface utilization.
- Analyze network traffic and identify bottlenecks.
- Monitor application and server availability.
- Generate performance reports and historical trends.
VLAN Configuration
VLAN Configuration
VLAN (Virtual Local Area Network) Configuration is the process of creating and managing
logical network segments within a physical network. VLANs improve network performance,
enhance security, and simplify network management by separating traffic into different
broadcast domains.
- Create and configure VLANs on network switches.
- Assign switch ports to the appropriate VLAN.
- Configure trunk ports to carry multiple VLANs.
- Set up inter-VLAN routing for communication between VLANs.
- Implement VLAN security to restrict unauthorized access.
- Verify VLAN membership and port assignments.
- Troubleshoot VLAN connectivity and tagging issues.
- Document VLAN IDs, names, and network segmentation.
Routing & Switching (Cisco)
Routing & Switching (Cisco)
Routing & Switching (Cisco) involves configuring and managing Cisco routers and switches
to ensure efficient, secure, and reliable communication across networks. It includes
implementing routing protocols, VLANs, switching technologies, and network security best practices.
- Configure Cisco routers and switches.
- Implement static and dynamic routing protocols (RIP, OSPF, EIGRP).
- Create and manage VLANs and trunk links.
- Configure inter-VLAN routing.
- Set up Spanning Tree Protocol (STP) to prevent network loops.
- Configure Access Control Lists (ACLs) for traffic filtering.
- Monitor and troubleshoot routing and switching issues.
- Verify network connectivity using Cisco IOS commands.
Subnetting & IP Addressing
Subnetting & IP Addressing
Subnetting & IP Addressing involves designing and managing IP networks by dividing them
into smaller subnetworks. It improves network efficiency, enhances security, and optimizes
the use of available IP addresses for effective communication between devices.
- Understand IPv4 and IPv6 addressing schemes.
- Calculate subnet masks and CIDR notation.
- Design and implement efficient subnetting plans.
- Assign IP addresses to network devices.
- Configure default gateways and DNS settings.
- Identify network, broadcast, and host address ranges.
- Troubleshoot IP addressing and subnet-related issues.
- Plan scalable IP addressing for growing networks.
