m04 - Module 4 Layer 2 Switching Fundamentals By Dr. Percy...

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© 2009, Cisco Systems, Inc. All rights reserved. Module 4 Layer 2 Switching Fundamentals By Dr. Percy DIAS
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2 © 2009, Cisco Systems, Inc. All rights reserved. Communication Between Devices in a LAN Network Unicast – Communication where a frame is sent from one host addressed to a specific destination. In this case, you have just one sender and one receiver. Unicast transmission is still the predominant form of transmission on LANs and within the Internet.
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3 © 2009, Cisco Systems, Inc. All rights reserved. Communication Between Devices in a LAN Network Broadcast – Communication where a frame is sent from one address to all other devices. In this case, you have just one sender, but the information is sent to all connected receivers by using a universal broadcast address. Multicast – Communication where a destination addresses is a specific group of devices, or clients.
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4 © 2009, Cisco Systems, Inc. All rights reserved. Switch Modes
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© 2009, Cisco Systems, Inc. All rights reserved. Switching Frames 1. A frame is received. 2. If the destination is a broadcast, forward on all ports except the port in which the frame was received. 3. If the destination is a Unicast and the address is not in the address table, forward on all ports except the port in which the frame was received. 4. If the destination is a Unicast and the address is in the address table, and if the associated interface is not the interface in which the frame arrived, forward the frame out the one correct port. 5.
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This note was uploaded on 12/22/2010 for the course ISOM ISOM235 taught by Professor Percy during the Spring '10 term at HKUST.

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m04 - Module 4 Layer 2 Switching Fundamentals By Dr. Percy...

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