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  • Network Layer

    • Broadcast Domain

      Broadcast Domain

      A broadcast domain is a logical part of a network (a network segment) in which any network equipment can transmit data directly to other equipment or device without going through a routing device (assuming the devices share the same subnet and use the same gateway; also, they must be in the same VLAN). A more

    • 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

    • 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)

    • 192.168

      192.168

      The Internet Assigned Numbers Authority (IANA) has allocated three IP address ranges that are to be exclusively used for private Internet networks: 10.0.0.0 – 10.255.255.255 (10/8 prefix) 172.16.0.0 – 172.31.255.255 (172.16/12 prefix) 192.168.0.0 – 192.168.255.255 (192.168/16 prefix) The first block “10.0.0.0 – 10.255.255.255” is referred to as the 24-bit block, the second “172.16.0.0 – 172.31.255.255”

    • DHCP (Dynamic Host Configuration Protocol)

      DHCP (Dynamic Host Configuration Protocol)

      An IP address can be defined as a unique numeric identifier (address) that is assigned to each computer operating in a TCP/IP based network. Manually configuring computers with IP addresses and other TCP/IP configuration parameters is not an intricate task. However, manually configuring thousands of workstations with unique IP addresses would be a time consuming,

    • traceroute

      traceroute

      traceroute is a command which is used to trace the route of a packet through a TCP/IP network. traceroute is a Unix command. Under Microsoft Windows, the traceroute command has been renamed `tracert`. Unix `traceroute` and Microsoft Windows `tracert` are designed to accomplish the same task, but differ in the way they display output, in

    • Routing Software

      Routing Software

      Most networks currently run on hardware-based routers from vendors like Cisco, Foundry, and Juniper. Computing power has advanced to the point where this is not necessary. General purpose computing platforms can replace these expensive dedicated hardware routers. These software routing platforms usually run on some version of free or inexpensive Unix. These are a few

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

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

      192.168.0.1 is a private IP address that is commonly used by Netgear and D-Link routers. The Netgear and D-Link brands are competitors to the Linksys division of Cisco, Incorporated and make a large number of the Internet routers used world-wide. The network address is not granted to the Netgear and D-Link companies exclusively; however, as

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

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

      127.0.0.1 is the loopback Internet protocol (IP) address also referred to as the “localhost.” The address is used to establish an IP connection to the same machine or computer being used by the end-user. The same convention is defined for computer’s that support IPv6 addressing using the connotation of ::1. Establishing a connection using the

    • IP Address Classes

      IP Address Classes

      IP Address classes were the original organizational structure for IP addresses. The specific address class would determine the maximum potential size for a computer network. The address class would define which of the specific bits of the address would be used to identify the network and network identification, the bits to identify the host computer

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