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  • Network Layer

    • Routing Protocols

      Routing Protocols

      A routing protocol is the implementation of a routing algorithm in software or hardware. A routing protocol uses metrics to determine which path to utilize to transmit a packet across an internetwork. The metrics that routing protocols use include: Number of network layer devices along the path (hop count) Bandwidth Delay Load MTU Cost Routing

    • BOOTP

      BOOTP

      BOOTP is the Bootstrap Protocol. The BOOTP protocol is utilized by diskless workstations to gather configuration information from a network server. The information provided by the BOOTP protocol is: The IP address which should be utilized by the diskless workstation The IP address of a server which will provide an Operating System image for the

    • IP (Internet Protocol)

      IP (Internet Protocol)

      The primary network communications protocol used on networks today is the IP (Internet Protocol). IP relays or transfers network packets, also known as datagrams, to destinations on local networks or across the public Internet. It defines the structures which encapsulate information as well as the legal addressing methods used to identify the source and destination

    • 192.168.1.245

      192.168.1.245

      Cisco is a leading manufacturer of networking devices such as modems, wireless routers, and network storage devices. Cisco products are sold worldwide to millions of consumers for both residential and commercial purposes. Cisco also markets a number of data plans for some of the largest Internet Service Providers in the world. What is 192.168.1.245? 192.168.1.245

    • How Unix and Windows traceroutes differ

      How Unix and Windows traceroutes differ

      The Unix/Linux `traceroute` command and the Microsoft Windows `tracert` commands both accomplish the task of tracing network paths, but they do it in slightly different ways. Both of these tools for tracing network routes send out a packet wth TTL (Time To Live) set to 1 and report it’s destnation. Then, they send out a

    • What is an L2TP?

      What is an L2TP?

      L2TP (Layer Two Tunneling Protocol) defines an extension to PPTP (Point-to-Point Tunneling Protocol) that an ISP (Internet Service Provider) uses to allow a VPN (Virtual Private Network) to operate. L2TP combines L2F from Cisco Systems’ optimum features and PPTP from Microsoft into a single protocol. L2TP’s two primary components are the LNS (L2TP Network Server)

    • Collision Domain

      Collision Domain

      A computer network can be segmented physically and logically. A collision domain is one of the logical network segments in which the data packets can collide with each other. One of the most common protocols used when referring to a collision domain is the Ethernet protocol. Collision domains are often referred to as ‘Ethernet segments.’

    • How to Change an IP Address

      How to Change an IP Address

      The IP address is a logical address assigned to a network card in order to establish communication over the network and identify the computer over it. Network administrators usually assign IP addresses based on certain rules and regulations. Reasons to Change an IP Address Even if someone is part of a small network routed through

    • What is PCAP?

      What is PCAP?

      PCAP (Packet Capture) is a protocol for wireless Internet communication that allows a computer or device to receive incoming radio signals from another device and convert those signals into usable information. It allows a wireless device to convert information into radio signals in order to transfer them to another device. PCAP runs in the background

    • 192.168.1.1 – What Are its Uses and Why is it Important?

      192.168.1.1 – What Are its Uses and Why is it Important?

      The 192.168.1.1 IP address is a default commonly used by Linksys routers. Linksys is now a division of Cisco, Incorporated and makes a large number of the broadband routers used throughout the world. The address is not exclusive to Linksys, but most other major router manufacturers use different default addresses for configuration of home or

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