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Layer-3 switching is solely based on the (destination) IP address stored in the header of an IP datagram (layer-4 switching may use other information in the header). The difference between a layer-3 switch and a router is the way the device is making the routing decision.
A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model. Some switches can also forward data at the network layer (layer 3) by additionally incorporating routing functionality. Such switches are commonly known as layer-3 switches or multilayer switches. [2]
Link aggregation between a switch and a server ... (layer 3) or a data link (layer 2) ... The main difference is that Team driver kernel part contains only essential ...
This layer is the protocol layer that transfers data between nodes on a network segment across the physical layer. [2] The data link layer provides the functional and procedural means to transfer data between network entities and may also provide the means to detect and possibly correct errors that can occur in the physical layer.
Switch A is replaced by two chassis, switches A 1 and A 2. They communicate between themselves using a proprietary protocol and are thereby able to masquerade as a single "virtual" switch A running a shared instance of LACP. Switch B is not aware that it is connected to more than one chassis. Switch B is also replaced by two chassis B 1 and B 2 ...
IEEE 802.3 is a working group and a collection of standards defining the physical layer and data link layer's media access control (MAC) of wired Ethernet. The standards are produced by the working group of the Institute of Electrical and Electronics Engineers (IEEE).
This is known as inter-VLAN routing. On layer-3 switches it is accomplished by the creation of layer-3 interfaces (SVIs). Inter VLAN routing, in other words routing between VLANs, can be achieved using SVIs. [1] SVI or VLAN interface, is a virtual routed interface that connects a VLAN on the device to the Layer 3 router engine on the same device.
It provides switches with a mechanism to prune multicast traffic from links that do not contain a multicast listener (an IGMP client). Essentially, IGMP snooping is a layer 2 optimization for the layer 3 IGMP. IGMP snooping takes place internally on switches and is not a protocol feature.