Here are some of the fundamental parts ofa network:
Network - A network is a group of computers connected together in a way that allows information to be exchanged between the computers.
Node - A node is anything that is connected to the network. While a node is typically a computer, it can also be something like a printer or CD-ROM tower.
Segment - A segment is any portion of a network that is separated, by a switch, bridge or router, from other parts of the network.
Backbone - The backbone is the main cabling of a network that all of the segments connect to. Typically, the backbone is capable of carrying more information than the individual segments. For example, each segment may have a transfer rate of 10 Mbps (megabits per second), while the backbone may operate at 100 Mbps.
Topology - Topology is the way that each node is physically connected to the network (more on this in the next section).
Local Area Network (LAN) - A LAN is a network of computers that are in the same general physical location, usually within a building or a campus. If the computers are far apart (such as across town or in different cities), then a Wide Area Network (WAN) is typically used.
Network Interface Card (NIC) - Every computer (and most other devices) is connected to a network through an NIC. In most desktop computers, this is an Ethernet card (normally 10 or 100 Mbps) that is plugged into a slot on the computer's motherboard.
Media Access Control (MAC) address - This is the physical address of any device -- such as the NIC in a computer -- on the network. The MAC address, which is made up of two equal parts, is 6 bytes long. The first 3 bytes identify the company that made the NIC. The second 3 bytes are the serial number of the NIC itself.
Unicast - A unicast is a transmission from one node addressed specifically to another node.
Multicast - In a multicast, a node sends a packet addressed to a special group address. Devices that are interested in this group register to receive packets addressed to the group. An example might be a Cisco router sending out an update to all of the other Cisco routers.
Broadcast - In a broadcast, a node sends out a packet that is intended for transmission to all other nodes on the network.
Topology Above is the simple topology based on which I have the scenario which I would like to resolve: Notes:1. BGP running between routers2. Networks behind each ISP can transit into each other using DC1 and DC2.3. Site 1 - has TPG IPVPN conne...
I have two switches, both with SFPs. When I connect them directly, with a fiber patch cable, they work fine and trunk well. When I put them over a fiber backbone, they both go to down/down. We flashlight tested three separate backbone co...
Hi there, please move if in wrong forumI have a single switch (Switch1 10.10.6.10) with three VLANS (VLAN200, VLAN300 and VLAN400)I want to add two switches for more ports (Switch2 10.10.6.20 and Switch3 10.10.6.30) so all three switches have all three VL...
I have a Cisco Catalyst 3560-CX switch and an RV320 router.I am trying to configure my router only for VPN and the switch in layer 3, I have 3 Vlan: Vlan 2 (wireless data), vlan 3 (VoIP server) and Vlan 4 (NAS and web server), but I still can't ping with ...