What are the uses of the ring topology
Token Ring - IEEE 802.5
To avoid chaos, the token passing procedure is used. This method ensures that not all participants send into the network at the same time. Only computers that are currently in possession of the token have the right to send data packets into the network. This token is passed on in a ring - even if no participant needs a transmission permit, the token continues to circulate. A token is an empty frame with a size of 3 bytes, where each byte has a separate task:
- Third byte - Start Delimiter (SD): The first 8 bits of the frame indicate the beginning of the token. The structure is based on the differential Manchester code, which allows a clear assignment.
- Second byte - Access Control (AC): The access control contains the token bit. If this is set to 0, the token is free, 1 indicates that it is occupied.
- First byte - End Delimiter (ED): The structure of the end delimiter is similar to the start delimiter and makes it clear that the frame is terminated.
If a participant receives the frame and does not want to send any information, they simply pass it on to the next in line. However, if the computer wants to send something, it changes the token bit and appends the actual data packet to the token. Now he sends the package off. The sender and recipient addresses are now part of this frame. Nevertheless, the data packet does not immediately reach the recipient, but is passed on from participant to participant via the MAU until it has reached the correct station. So that the signal does not lose strength en route, each participant acts as a repeater: It reads in the packet, creates it again and sends it back into the ring.
The destination station copies the information, confirms correct receipt of the data by changing the Frame Status (FS), the last byte in the entire frame, and forwards the packet. When the data packet has reached the original sender again, it deletes the data and releases the token bit again. Alternatively, he now also has the option of sending the next data straight away. A token holding time has been implemented so that all participants have the chance to transmit data. This time indicates how long a station can use the token for itself.
- Can we purify water with potassium permanganate
- How do I earn more with Magicpin
- What should I not miss in Sydney
- Can a haiku rhyme?
- Is there a real lesbian from Indore
- How many sharks are extinct
- What are some tourist traps in Paris
- Can't men have PTSD after the war?
- How do I get past AP Psychology
- How do I play Go
- What are some uses of floppy disks
- Are there internships for biotechnology in the VIT
- How can we choose furniture fabrics
- What mental disorders cause permanent chronic dissociation?
- Why does dirt get in my nails?
- Why is carbinol more acidic than ethanol
- Do plants have amino acids
- How much is a Kruger Rand worth
- Will there still be social security in 2030?
- How is Snapchat better than WhatsApp
- Trench warfare took place before World War I
- What's your favorite IPA
- Are rocking cradles safe for babies
- Which is the best air compressor