Network Engineer skills for your resume and career

Switches are devices that connect multiple devices within a network. Network engineers use switches to configure, install, and manage network devices such as routers, servers, and wireless access points. They also use switches to implement security protocols, monitor network performance, and troubleshoot issues. For example, they might configure access-list on Cisco routers and switches or manage changes to configurations on Cisco Nexus platforms.

Troubleshoot is the process of finding and solving problems. Network engineers use troubleshoot to monitor and fix issues in communication circuits, analyze and resolve technical problems, and manage and maintain network systems. They also use troubleshoot to work with third-party vendors to design, engineer, and fix problems in complex systems.

Network infrastructure refers to the physical and logical components of a network, including hardware, software, and connectivity. Network engineers use network infrastructure by designing, implementing, and maintaining it to meet specific business objectives. They may redesign or upgrade the infrastructure to reduce costs, improve performance, or enhance security. They also analyze network data to identify inefficiencies and recommend changes to management.

BGP, or Border Gateway Protocol, is a routing protocol used to exchange routing and reachability information among autonomous systems on the internet. Network engineers use BGP to configure routing for various purposes, such as providing internet redundancy, managed hosting environments, and load balancing policies. They also use BGP attributes like local preference, MED, and AS-PATH to influence inbound and outbound traffic.

OSPF (Open Shortest Path First) is a routing protocol used in networks to determine the best path for routing packets. Network engineers use OSPF to create a full-mesh topology, redistribute routing protocols, and configure Frame-Relay. They also use OSPF to troubleshoot issues, implement redundant networks, and design complex network environments.

A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Network engineers use firewalls to protect networks from unauthorized access and malicious attacks. They manage firewall configurations, implement security policies, and perform periodic reviews of firewall settings. They also use firewalls to establish logical separation between different network environments and protect assets from internet-based threats.

A LAN, or Local Area Network, is a computer network that spans a small geographical area. Network engineers use LAN to manage network availability, maintain security, and perform daily operations. They also use it to design and implement new network architectures, troubleshoot connectivity issues, and configure wireless networks. For example, they might use LAN to set up a network for a company or redesign a campus's LAN system.

Juniper is a type of network equipment and software. Network engineers use Juniper to manage firewalls, configure policies, and troubleshoot inaccessibility issues. They also use it to update firmware, detect and repair configuration issues, and control vendor accessibility. For example, they might lead a project to upgrade Juniper Network Security Manager to a high-availability configuration in all environments.

TCP/IP is a set of protocols that helps devices on the internet communicate with each other. Network engineers use TCP/IP to create and maintain file systems, execute security and printer configurations, and configure protocols. They also use it to monitor enterprise networks, perform installations and troubleshooting, and implement core networking services. For instance, they may design networks with a thorough understanding of internet routing and transport architectures, including TCP/IP.

VoIP, or Voice over Internet Protocol, is a technology that allows voice communications over the internet. Network engineers use VoIP to design, manage, and administer business-critical systems. They configure and test VoIP solutions using systems like Cisco Unified Communications. They also monitor VoIP phone connectivity, conduct technical development and engineering processes, and provide full-service technical support.

EIGRP (Enhanced Interior Gateway Routing Protocol) is a routing protocol used for routing decisions. Network engineers use EIGRP to configure and troubleshoot networks, manage convergence speed, and implement route redistribution. They also use it in conjunction with other routing protocols, such as OSPF and BGP, to interconnect different areas and autonomous systems.

Network design is the process of planning and organizing a network's architecture. Network engineers use network design to manage release testing environments, supervise network technicians, and provide solutions for clients. They also deliver training in network design, construction, administration, and security. As Laura Kier, a Network Design and Administration Instructor, puts it, "Students graduating from the Computer Network Design and Administration program will enter the job market with a solid foundation in networking technologies."

IOS is a software used by network engineers to operate Cisco network devices like routers and switches. Network engineers use IOS to upgrade and configure these devices. They also use it to test and troubleshoot problems with the network. For example, they would use IOS to upgrade the software on a router or switch, or to copy configurations between devices. They might also use it to monitor the network for problems.