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LAN Interconnection Devices |
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Repeater: Layer 1 (Physical) |
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Bridge: Layer 2 (Data Link) |
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Switch: Layer 2, 3, or 4 (Transport) |
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Router: Layer 3 (Network) |
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Gateway: Layer 7 (Application) |
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CSU/DSU: LAN to WAN connection |
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Homogeneous Network Expansion |
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Learning
(Transparent)
Bridge |
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Requires no administration |
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Discovers connected
terminals |
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Source routing bridge |
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Used in token ring networks |
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Follows the information in
the frame header |
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Works at the Network Layer |
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Can handle
non-homogeneous
networks |
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Determine “best”
data path for each
frame |
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Static
Router |
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Manual
administration |
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Dynamic Router |
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Automatic |
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Exchanges
information with peers |
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Standard protocol and algorithm (Dykstra) |
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Works at the
application layer |
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A high-level
protocol converter |
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Already covered in chapter 12 |
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Channel Service Unit/Data Service Unit |
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Notes