L7HardwareAddr6 - Part 2 Packet Transmission Part 2 Packet...

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1 Part 2 – Packet Transmission Hardware Addressing and Frame Type Identification Gail Hopkins Part 2 – Packet Transmission Introduction ± The need for addressing ± Addressing in hardware Ð static, dynamic and configurable addressing Ð broadcast addresses, multicast addresses and promiscuous mode ± Frame type and frame format ± Ethernet frame format Part 2 – Packet Transmission The Need for Addressing ± A LAN provides a physical path from one computer to all others ± Most communication is from one computer to one other Ð addressing allows the source to identify the destination Ð hardware addressing prevents unnecessary messages being seen by a computer Part 2 – Packet Transmission Specifying a Recipient ± Each station is assigned a unique numerical address on the network called its hardware address or physical address ± Each frame transmitted across the network typically includes a destination address field and a source address field Ð the network hardware in each station decodes each frame and uses the destination address to determine whether to accept it Ð including the source address field makes it easy to generate a reply Part 2 – Packet Transmission LAN Hardware and Filtering ± LAN hardware is typically completely
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L7HardwareAddr6 - Part 2 Packet Transmission Part 2 Packet...

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