what is the difference between a layer 2 and a layer 3 switch?
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A Layer 2 switch only works with MAC addresses and doesn't interact with any higher layer addresses, such as an IP. A Layer 3 switch, on the other hand, can also do static routing and dynamic routing, which includes IP and virtual local area network (VLAN) communications.
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Layer 2: switches and media converters Both switches and media converters can be Layer 2 devices. Usually the only difference between a Layer 2 switch and a Layer 2 media converter is the number of ports—a device with two or three ports is called a media converter; four or more ports is called a switch.
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The IP base is for the Standard Multilayer Software Image (SMI) switches, and the IP services image is for the Enhanced Standard Multilayer Software Image (EMI) switches in Cisco IOS Software Release 12.2(25)SEB and later. ... For Layer 2-only switches, you require a Layer 3 routing device with any of the previous images.
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Remember that one side of the common on the three way is the line side and the other common is the load side or switch leg. The two wires that connect between the 3-ways switches are carriers. If you have a 4-way it simply flips the carriers, two carriers in two carriers out.
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The basic function that any switch is supposed to perform is to receive information from any source connected to it and dispatch that information to the appropriate destination only. This thing differentiates switches from hubs. Hub gets the information and forwards that to every other device in the network.
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A physical layer switch, or Layer 1(L1) switch, operates at the physical layer of the OSI (Open System Interconnection) model. The easiest way to think of a Layer 1 switch is an an electronic, programmable patch panel. It simply establishes the physical connection between ports.
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A layer 2 switch is a type of network switch or device that works on the data link layer (OSI Layer 2) and utilizes MAC Address to determine the path through where the frames are to be forwarded. ... A layer 2 switch can also be referred to as a multiport bridge.
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A Cisco router connects different networks together whereas, a switch connects multiple devices together to create a network. 2. Routers work on the Physical layer; Data link layer and the Network layer whereas Switches, as well as advanced switches, work on the Data link layer and the Network layer too.
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Switching involves moving packets between devices on the same network. Conversely, routing involves moving packets between different networks. ... A switch maintains a database of MAC addresses and what port they are connected to. Routers, on the other hand, operate at layer 3 of the OSI Model.
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The simple explanation is that a 2-wire system does not include a Neutral wire at the light switch, the 3-wire system does include the Neutral at the switch.
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Network switches create a network while routers connect networks. In other words, network switches allow different devices on a network to communicate, but routers allow different networks to communicate. In a nutshell, a network switch is typically a Layer-2 device of the OSI model while a router is a Layer-3 device.
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The biggest difference between Ethernet II and 802.3 is the fields of their Ethernet headers. The important distinction between Ethernet 2 and IEEE frames is that the Type field in Version II has been replaced with a 2-byte Length field in the IEEE formats.
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A distribution switch is a distribution layer switch, which uplinks to upper layer core switch and links down to the access/edge switch. Simply put, an aggregation switch in between functions a bridge between core layer switch and access layer switch.
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Lan Base means it's a layer 2 switch, IP Base means it's a layer 2 switch with a simple three-layer function, IP Services means it's a Layer 2 switch with a simple route function.
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In general, forwarding refers to a device sending a datagram to the next device in the path to the destination, switching refers to moving a datagram from one interface to another within a device, and routing refers to the process a layer-3 device uses to decide on what to do with a layer-3 packet.
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But it's technically valid. Takeaway: Your switches won't warn you if you have multiple subnets using a single VLAN. Never assume a VLAN has only one subnet. When in doubt, do a show run interface Vlan300 on your layer-3 switches to view both the primary and secondary IPs.
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Class 3 wiring is functionally similar to Class 2 wiring, but with higher voltage and power limitations. Major differences in the installation of Class 2 wiring are that conductor sizes 18 and 16 AWG are permitted and splices, such as with wire nuts, are permitted outside of conventional enclosures.