- Capa solutions are a critical part of the virtualization of the network. Here is a detailed explanation:
What is the second layer?
In the computer network 2. The layer refers to the OSI model data link layer (L2). It works in the physical layer and provides errors without transfer of reliable and rapid data frames between network devices.
The L2 protocol battery consists of two subset: Mac (multimedia access control) and CSMA/CD (bearer sensing several circular access verification/circular backup). The MAC sub -lape is responsible for sending and receiving data shots in the data link layer, while the CSMA/CD subconscate provides error detection and correction mechanisms.
What are the solutions of layer 2?
- The layer solutions are designed to improve the reliability, scalability and performance of the network, providing additional protection, dismissal and tolerance to damage. These solutions generally include adding a new layer between the L2 protocol battery and the rest of the OSI model.
There are several types of layer solutions:
1
Frame Relay : A special scheme that provides guaranteed permeability and delivery without errors.
- ATM (asynchronous transfer mode)
: Switching technology that uses multiple shots to provide high -speed data.
3
SONET/SDH (Synchronous digital hierarchy): Digital signal processing protocol used for long -distance network transmission.
Why do we need 2 layers solutions?
The networks are subject to failures, errors and losers of packages for a variety of reasons, such as:
- Physical media restrictions
- Network congestion
- False or damaged devices
- Cap solutions help reduce these problems:
1
Relaxation : Provide multiple roads for data transmission, ensuring that the network remains operational, even if a form is low.
- Error tolerance
: Detection and correction of errors without human intervention.
3
Improved Reliability : Reduction of latency and loss of packages.
Real world examples
Some joints 2. The layer solutions include:
* Table interceptions (for example T1, E1) for high -speed network connections
* Distributed switching solutions (for example, Cisco catalyst switches) to improve scalability and performance in data centers
* Network routers with built switching options (for example, Juniper Networks SRX series) to guarantee the protection and optimization of the layers.
In summary, layer solutions are designed to improve the reliability, scalability and performance of the network, providing additional protection, dismissal and tolerance to damage. These solutions help reduce network failures, errors and package losses, ensuring that networks work even in unfavorable conditions.