Network layer functions

Chapter summary: Bridges selectively relay packets between network segments, depending on their data-link layer destination addresses; bridges maintain a single broadcast domain and create separate collision domains; switches improve on the function of bridges by forwarding packets only to their destination systems;...and other contents.

16p tangtuy08 21-04-2016 41 3   Download

Bài giảng Computer Networks 1 (Mạng Máy Tính 1): Lecture 3.1 của Dr. Phạm Trần Vũ trình bày về The Data Link Layer với những nội dung như Data Link Layer Design Issues, Functions of the Data Link Layer, Services Provided to Network Layer và một số nội dung khác.

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Communication Architecture Strategy for connecting host computers and other communicating equipment. Defines necessary elements for data communication between devices. A communication architecture, therefore, defines a standard for the communicating hosts. A programmer formats data in a manner defined by the communication architecture and passes it on to the communication software. Separating communication functions adds flexibility, for example, we do not need to modify the entire host software to include more communication devices....

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Raw Sockets let you program at just above the network (IP) layer You could program at the IP level using the IP API but you can’t get at ICMP Raw Sockets expose ICMP you get a Raw Packet and populate the entire packet yourself for high level protocols like TCP and UDP you lose all of the functionality implemented in those layers choosing to use a Raw Socket must be weighed carefully Raw Sockets can be dangerous Raw Sockets can be against the law http://www.kumite.com/rsnbrgr/rob/grcspoof/cnn/ ...

9p muathu_102 28-01-2013 45 3   Download

Upon completing this module, you will be able to: Explain how bridging and switching operates Explain the purpose and operations of the Spanning-Tree Protocol Verify the default configuration of the device, given a functioning access layer switch Build a functional access switch configuration to support the specified network operational parameters, given a network design Execute an add, move, or change on an access layer switch, given a new network requirement

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Upon completing this module, you will be able to: Use the available configuration tools to establish connectivity to the appropriate network device in order to complete the initial device configuration Verify the default configuration of each device, given a functioning access layer switch and router

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The ATM Switch Model The B-ISDN envisioned by ITU-T is expected to support a heterogeneous set of narrowband and broadband services by sharing as much as possible the functionalities provided by a unique underlying transport layer based on the ATM characteristics. As already discussed in Section 1.2.

9p tienvovan 11-09-2010 79 6   Download