BROCADE IP PRIMER

The Session Layer (Layer 5)You interact with Layer 6 protocols every day (more than you might think). Hereare some examples:• American Standard Code for Information Interchange (ASCII) is a verycommon method for formatting text; it assigns a number to every letter,number, and symbol it displays• Joint Photographic Experts Group (JPEG) is a method for presentingimages, photographs, etc.• Musical Instrument Digital Interface (MIDI) is a method for storing digitalsignals from a synthesizer or other electronic musical instruments• Moving Pictures Experts Group (MPEG) describes a series of compressionmethods for presenting audio and videoRemember, it's all about the presentation in Layer 6. What does the data looklike? How is the information arranged? How is it presented?The Session Layer (Layer 5)Now we're ready to start talking. We know what we're saying (ApplicationLayer). We know how we're saying it (Presentation Layer). Now we need to“open a dialog.” We have to start a conversation. The Session Layer's job iskeeping track of conversations.Computers have become better and better at multitasking. Think about havinga conversation with a person (we're back in the human world now). You speak.The person listens. The person responds. You listen.HelloHow areyou?FineHelloFine. You?Now, imagine you wanted to have a second conversation with the same personat the same time. In fact, maybe you even want to have additional conversationswith other people in the same room at the same time.Brocade IP Primer 11