In the OSI seven-layer model, Layer 3 works atop Layer 2, which works atop Layer 1. Bits are transferred over a variety of medium, cables, ports etc. Frames are used to define the data between two nodes on a data link, and when there’s more than two nodes, the network helps address route and control traffic.

Ethernet Layer-2 Bridging - IBM Layer-2 bridging functions similar to the Shared Ethernet Adapter (SEA) support provided by a Power Systems™ Virtual I/O Server (VIOS) partition. Layer-2 bridging works by putting one physical and one virtual Ethernet adapter into a mode where they can receive traffic that is not destined for their address. Ethernet frame - We have already learned that encapsulated data defined by the Network Access layer is called an Ethernet frame. An Ethernet frame starts with a header, which contains the source and destination MAC addresses, among other data. The middle part of the frame is the actual data. The frame ends with a field called Frame Check Sequence (FCS).

The difference between Layer 3 and Layer 2 networks

Oct 03, 2019 Ethernet -

802.2 vs 802.3 802.3 and 802.2 do not refer directly to physical architectures, but to the format of the layer 2 Ethernet frame. 802.2 is the default frame type for Netware 3.12 and 4.x, 802.3 is used for Netware 3.11 and earlier. 802.3 is a bit like Novell 802.3 raw + 802.2 LLC, created by IEEE for its own Ethernet specification.

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. It uses hardware based switching techniques to connect and transmit data in a local area network (LAN).