Decisions of layer 2 are a critical part of the virtualization of the network. Here is a detailed explanation:

What is layer 2?

In computer networks, layer 2 refers to the OSI model data connection layer (L2). It works on the physical layer and provides without errors, reliable and quick transfer of data frames between devices to network.

The L2 protocol consists of two sublayers: Mac (access control to media) and CSMA/CD (Carrier Sense Multiple Access/Circular Checknicnes). The Bublayer Mac is responsible for sending and receiving data frames to the Link Link layer, while CSMA/CD sublayed provides mechanisms for detecting and correcting errors.

What are the solutions of layer 2?

Cars 2 solutions are designed to improve the reliability, scalpiness and performance of the network by providing additional protection, excess and tolerance of damage. These solutions usually include the addition of a new layer between the L2 protocol stack and the rest of the OSI model.

There are several types of layouts per layer 2:

• Frame relay : special chain that provides guaranteed bandwidth and delivery without errors.

• ATM (asynchronous transfer mode) : switching technology that uses multiple data frames at high speeds.

• SONET/SDH (synchronous digital hierarchy): Digital signal processing protocol used to transmit the long distance network.

Why do we need layer 2 solutions?

Networks are prone to damage, errors and loss of packages for various reasons such as:

• Physical media restrictions

• Network congestion

• Defective or damaged devices

Solutions of layer 2 helps to soften these problems with:

• Discimparation : Providing multiple data transmission roads, ensuring that the network remains operational, even if one time is down.

• Tolerance of damage : detecting and correcting errors automatically without human intervention.

• Improved reliability

  : reducing the latency and loss of packages.

Real World examples

Some common layout solutions 2 include:

* Frame connections (eg T1, E1) for high -speed network connections

* Distributed switching solutions

(eg Cisco Catalyst switches) for improved scanning and performance in data centers

* Network routers with built -in switching capabilities (eg SRX Series Juniper Networks) to provide protection and optimization of layer 2.

In summary, layer 2 decisions are designed to improve the reliability, scales and productivity of the network, providing additional protection, excess and tolerance to damage. These solutions help to mitigate the challenges of mistakes, mistakes, mistakes and packages, ensuring that the networks continue to work even under adverse conditions.