IEEE-802 STANDARDS
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
IEEE Standard of 802 in Computer Network, Slides of Computer Networks
An overview of Local Area Networks (LANs) and the IEEE-802 standards that govern them. It explains the four main LAN architectures, including Ethernet, Token Bus, Token Ring, and Fiber distributed data interface, and their sub-divisions. It also describes the Medium Access Control (MAC) sub-layer and its functions, including synchronization, flag, flow, and error control specifications. Additionally, it discusses the Protocol Data Unit (PDU) and the addresses used by the LLC to identify the protocol stacks on the receiving and sending machines.
Typology: Slides
2022/2023
1 / 13
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download IEEE Standard of 802 in Computer Network and more Slides Computer Networks in PDF only on Docsity!
IEEE-802 STANDARDS
Local Area Network
A Local area Network is the data communication system that allows a number of independent devices to communicate directly with each other in a limited geographical area. LANs are dominated by four architecture: (^) Ethernet (^) Token Bus (^) Token Ring Fiber distributed data interface Token Bus, Token Ring and Ethernet are standards of IEEE and a part of project 802.
The LLC is non architecture specific, that is the same for all IEEE defined LANs. The MAC sublayer on the other hand, contains a number of distinct modules, each carries proprietary information specific to the LAN product being used. The strength of project 802 is modularity. By subdividing the function necessary for LAN management, the designers were able to standardize those that can be generalized and to isolate those that must remain specific.
Each sub division is identified by a number: 802.1 (Internetworking) 802.2 (LLC) 802.3 (MAC) 802.4 (Token Bus) 802.5 (Token Ring)
- Project
IEEE 802.
IEEE 802.1 is the section of Project 802 devoted to internetworking issues in LANs and MANs. It seeks to resolve the incompatibilities between network architectures without requiring modifications in existing addressing access and error recovery mechanisms, among others.
Medium Access Control
The second set of functions, the MAC sub layer, resolves the contention for the shared media. It contains the synchronization, flag, flow, and error control specifications necessary to move information from one place to another as well as the physical address of the next station to receive and route packet. MAC is the lower sub layer of the data link layer.
Protocol Data Unit
The data unit in the LLC level is called the PDU. The PDU contains four fields familiar from HDLC: a destination services access point (DSAP), a source service access point (SSAP), a control field, and an information field.
Control
The control field of the PDU is identical to the control field in HDLC. As in HDLC, PDU frames can be I-frames, S- frames, or U-frames and carry all of the codes and information that the corresponding HDLC frames carry.