Скачать или смотреть What is SCTP | SCTP Explained | What is Stream Control Transmission Protocol

In this video, we are going to explain SCTP – Stream Control Transmission Protocol in a very simple and clear way. If you are a student of computer networks or preparing for exams like GATE, UGC NET, or interviews, then this video will help you understand SCTP in depth.

What is SCTP?

SCTP stands for Stream Control Transmission Protocol. It is a transport layer protocol just like TCP and UDP. It was originally designed to transport SS7 signaling messages over IP networks, but today it is used in many applications like telecommunication, VoIP, and multimedia transmission.

Features of SCTP

SCTP combines the best of both TCP and UDP and adds some extra features:

Reliable and Connection-Oriented like TCP.

Message-Oriented like UDP (sends messages, not streams of bytes).

Multi-Streaming – allows multiple independent streams within a single connection.

Multi-Homing – supports multiple IP addresses for redundancy and fault tolerance.

Congestion Control and Flow Control similar to TCP.

Error Detection using checksums.

Why SCTP is Important?

The main advantage of SCTP is that it avoids head-of-line blocking using multi-streaming. In TCP, if one packet is lost, the entire stream waits. But in SCTP, only that specific stream is delayed, others continue.
Also, with multi-homing, SCTP can use another IP path if one network path fails, which makes it more reliable for critical communication.

SCTP vs TCP vs UDP

TCP: Reliable, connection-oriented, byte-stream based.

UDP: Fast, connectionless, message-based, but unreliable.

SCTP: Reliable, message-based, supports multi-streaming and multi-homing.

So SCTP provides a balance between reliability and efficiency, making it useful for real-time applications.

Applications of SCTP

Telecommunication signaling (SS7 over IP).

VoIP (Voice over IP) systems.

WebRTC and multimedia streaming.

Military and aviation communication systems.

Transport of critical data in IP networks.

Conclusion

SCTP is a powerful transport layer protocol that extends the capabilities of TCP and UDP by providing reliability, message orientation, multi-streaming, and multi-homing. Understanding SCTP is very important for networking students and professionals.

👉 Watch the full video for examples, comparison, and real-world uses of SCTP. Don’t forget to like, share, and subscribe for more computer networks tutorials.

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