In this article I describe the SCTP Stream Control Transmission Protocol in computer network for CCNA exam. SCTP Stream Control Transmission Protocol is related to Transport layer of TCP/IP Suite model. The SCTP Stream Control Transmission Protocol provides multiple streams transmission at same time between two devices in a network. SCTP Stream Control Transmission Protocol is advance name of TCP and known as TCPng (Next generation TCP). Here multiple service works at same time means voice and data transmission in a network or internet. SCTP Stream Control Transmission Protocol mostly used to allow multiple streaming connection between different networking devices in the network or internet.
SCTP Stream Control Transmission Protocol allowed multiple connections between different networking devices to improve the internet speed and performance. SCTP Stream Control Transmission Protocol works with both TCP and UDP protocols in the network or internet. Routing and Routed Protocols provides the connectivity between different networks for data packets flow from one network to another network. A standard routing table is maintained by the routers for data packet flow between different networks.
Before going to learn about SCTP Stream Control Transmission Protocol we need to remember the OSI suite and TCP/IP suite model. There are many manufacturer of computer machine in the market. Initially when computers became single user public computer. The computers communicate with only same brand machines. It happens because there was no any fix standard for data transfer between different devices. It is very difficult to make communication with each other when the hardware are of different brands or company. In this article I describe the some basic part of OSI reference layer and TCP/IP Suite model basic concepts in networking with the SCTP Stream Control Transmission Protocol.
OSI reference model basic concepts
OSI reference model in computer network followed by various vendors to overcome the compatibility problem. After implementation of OSI reference model in computer network, equality maintains by all manufacturer. In 1970 the Open Systems Interconnection (OSI) reference model was created by the International Organization for Standardization (ISO). The OSI model was meant to create inter-operable network with different manufactured devices. In this article I describe some layered approach of TCP/IP Suite model basic concepts in computer network. Before understanding the TCP/IP Suite model basic concepts it is necessary to know about the 7 layers of OSI reference model because the basic work of each layer is described in the OSI reference model. You can read the full article related to OSI reference model in computer networking here.
Importance of OSI reference model for SCTP Stream Control Transmission Protocol
Before going to know about the SCTP Stream Control Transmission Protocol. It is necessary to know the function of layers in OSI model and TCP/IP model. Initially not only hardware but software also not supported for work the different computer brand. It became very difficult for all computer users to working without implementation of OSI reference model in computer network. It is necessary then to make some common protocols for all vendors of computer. Before implementation of OSI reference model in computer network, all vendors implements their own protocols on computer hardware and software.
In networking OSI reference model became helpful. OSI reference model describes the flow of data between nodes in any network. Data from one computer application to another computer application transfer by following some common protocols. The OSI reference layer also become beneficial for troubleshooting the network problems. TCP/IP and Cisco three layered hierarchical model of Cisco became more helpful alongside the OSI reference model.
The Layered Approach in computer network for SCTP Stream Control Transmission Protocol
The Layered approach was the best way to make equality for all computer devices. Layers are not physical but following some protocols. Protocols are for connectivity, connections, data transfer and more. All manufacturer begin to follow the layered approach for OSI reference model in computer network. The OSI reference model change in TCP/IP reference model and later on Cisco three layered hierarchical model. OSI layer architecture have 7 layers. TCP/IP reference model convert these 7 layers into only four layers. After that Cisco three layered hierarchical model converts these 7 layers into three layers. Some layers combined to work in a single layer.
OSI is acronym for open system interconnection. The OSI is a logical reference OSI reference model in computer network. OSI model helps for data flow between different devices and operating systems. All manufacturer used their own architecture before invention of OSI reference model. It was very difficult to establish data communication between different devices. To overcome this problem international organization for standardization (ISO) created the open systems interconnection (OSI) reference model. OSI reference model make data flow possible between different operating system, devices and hardware. Later the OSI model adopted by Cisco as Cisco three layered hierarchical model.
Structure of OSI reference model related to SCTP Stream Control Transmission Protocol
OSI reference model in computer network consist of 7 layers. These 7 layers further divided into two groups. First 3 layers works for application communication and remaining 4 layers works for data flow. Application, presentation and session layers define the application communication. Transport, network, data link and physical layers define the data flow. Networking protocols works only on last four layers.
TCP/IP Suite model basic concepts for SCTP Stream Control Transmission Protocol
TCP/IP is acronym for Transmission Control Protocol/Internet Protocol (TCP/IP suite model). In this section of the article I describe about TCP/IP suite model basic concepts in detail. TCP/IP suite model is a reference model like OSI layers. Instead of 7 layers of OSI reference model. TCP/IP suite model consist only four layer. All seven layers are merged into four layers only. TCP/IP suite model was designed and implemented by Department of Defence (DoD). TCP/IP developed to preserve data integrity.
The main purpose to develop the TCP/IP is to provide security in the network. A lots of protocols works on each layer to provide a secure network.
It is necessary to understood the protocols used in TCP/IP Suite model basic concepts. IP addressing play an important role in TCP/IP Suite model basic concepts. By using the IP address and subnet masking broadcast domain breaks. It will improve the performance of the network. Breaking broadcast domain increase the data flow speed. Here IP stands for IPV4 only. We ignore the IPV6 for some time in this article. It will make it easy to understand the TCP/IP Suite model basic concepts.
A snap of TCP/IP Suite model basic concepts
In the decade of 1970’s TCP/IP suite model developed by DoD. In the initial stage TCP/IP suite model divided into two segments TCP and IP. Later its name registered with combined name of TCP and IP like TCP/IP model. ARPA, the Advanced Research Projects Agency of DoD officially authorised to use TCP/IP suite model. TCP/IP model was working well so it was adopted by many organisations. In today scenario it is mostly using reference model for networking. Internet is the best example of using TCP/IP.
Process or Application layer of DoD model in TCP/IP Suite model
This is the first layer of TCP/IP of DoD model. It is combination of top three layers of OSI reference model. The functions of Application layer, presentation layer and session layer in OSI model works in single layer process layer. This layer supports the point to point communication and controls the user interface. The data encryption and decryption also done at this layer. Example of some protocols functions at this layer are TLS Transport Layer Security, FTP, LPD, TFTP, SMTP.
Transport layer of DoD model in TCP/IP Suite model
Transport layer of TCP/IP is same as the Transport layer of OSI reference model. It supports the TCP and UDP protocol. This protocol converts the main data segment into packets and transport to the internet layer. The responsibility of Transport layer is to combine the segments and built the data. The data should be reconstruct in its real form. Transport layer is also responsible for creating end-to-end communication between sender and receiver. This layer ensure the delivery of segment in sequence at the receiving device. This property maintains the data integrity.
Internet layer of DoD model in TCP/IP Suite model
Internet layer of TCP/IP is similar to the network layer of OSI reference model. Routing protocols functions on Internet layer of TCP/IP model. Addressing and filtering of packets is main responsibility of Internet layer of TCP/IP model. This layer provides the transmission of packet in the whole network. Some example of protocols functions on internet layer are ICMP, ARP and IP.
Link layer of DoD model in TCP/IP Suite model
Link layer is the least layer of TCP/IP. Basically link layer is combination of data link and physical layer of OSI reference model. Link layer is also known as Network Access layer. It works on MAC address based data transmission. Link layer handles the frame and bits. It receive the bits and constructs frame from merging bits in a sequence. In case of any bit is missing this layer request to re transmit the bits. Ethernet, FDDI, WAP etc functions on this layer. There is no any preset specification for link layer. Link layer functions on any type of existing media.
SCTP Stream Control Transmission Protocol Explained in brief
SCTP is acronym for Stream Control Transmission Protocol. SCTP Stream Control Transmission Protocol is a transport layer protocol. The SCTP provides multiple streams transmission at same time between two devices in a network. SCTP is advance name of TCP and known as TCPng (Next generation TCP). Here multiple service at same time means voice and data transmission in a network. A telephone line provides both voice and data simultaneously on internet. SCTP is similar to that transmission.
SCTP Stream Control Transmission Protocol provides end to end internet communication. SCTP is unicast connection-oriented protocol like TCP protocol. SCTP provides reliable and sequenced packet delivery. SCTP is a message-oriented protocol. SCTP supports multiple streams at a time while TCP supports only one stream at a time.
IP supports by SCTP Stream Control Transmission Protocol
TCP supports only one IP at a time. Means if two devices are connected with each other with TCP protocol, single IP assigned to both of them. SCTP supports multi-homing, the devices can use multiple IP address for making connections. These IP address may be allotted from various ISP. If one ISP goes down, then other IP address will work fine. So SCTP is a reliable communication protocol over the internet.
Function of SCTP Stream Control Transmission Protocol
Some Applications supports SCTP protocol for data transmission on internet. These applications use SCTP transport layer to deliver the data to correct receiver. SCTP use data chunks and control chunks to deliver and control the data flow. SCTP breaks the message into multiple portions. At the receiver end the small portions joint together and meaning full data delivered to application. By doing same process the exact message passed to the receiving application. SCTP supports multi streaming transmission on internet. It means at the same time voice and data transmitted on internet. The data include multiple services transmission like video streaming, audio streaming etc.
TCP protocol allow the data to transmit in a single stream. TCP provides the assurance of correct data delivery to the receiver. In case data not delivered correctly the same data retransmit on the same media stream. This error correction process of TCP is time consuming process. the next data stream will not transmit until the previous data receipt acknowledgement from receiver. In SCTP the process is different. There are multiple streaming lines used for data transmission by using SCTP protocol. If some data lost in any streamline, then same data recollected from another media streamline. This will save time and data transmission done without time loss. The data stream continues send the data from multiple streamlines.
In this article I describe the SCTP Stream Control Transmission Protocol in computer network for CCNA Eam. I hope you found this article helpful for any query or suggestions you may drop a comment below or contact us. Your suggestions are always welcome by us.
