1b. ethernet (38 slide)
DESCRIPTION
1b. EthernetTRANSCRIPT
CSMA/CD
LOCAL AREA NETWORKS (LANS)
Minimum frame length/Transmission rate is proportional to Collision domain / Propagation speed
Ethernet layers
Ethernet frame
Ethernet implementation
Ethernet implementation
Ethernet implementation
Ethernet implementation
Fast Ethernet implementation
Fast Ethernet implementation
Fast Ethernet implementation
Gigabit Ethernet implementation
Gigabit Ethernet implementation
Token passing
Token passing
Token passing
Token passing
Data frame
MAU
Spread spectrum techniques
Spread spectrum techniques
ISM bands
BSSs
ESS
CSMA/CA
CONNECTING DEVICES
Connecting devices
Repeater
A repeater connects segments of a LAN together.
A repeater forwards every packet; it has no filtering capability.
Hubs
A bridge has a table used in filtering decisions.
Bridge
A bridge connects segments of a LAN together.
A router is a three-layer (physical, data link, and network) device.
A repeater or a bridge connects segments of a LAN. A router connects independent LANs or WANs to create an internetwork (internet).
Routing example
A router changes the physical addresses in a packet.