November 2001
Intermediate to advanced
320 pages
7h 58m
English
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5.3. Chapter Summary
Layer 2
The minimum requirements for communication over a LAN are satisfied by the physical and data link levels.
Communication between two devices on the same LAN segment use MAC addressing.
Layer 2 bridging allows for the division of a LAN into segments, passing only the traffic that is destined for remote segments.
Spanning tree is used by bridges to establish primary paths between multiple layer 2 segments.
In spanning tree, only one link between two LAN segments can be active.
Link-layer bridging is succeptible to broadcast storms and network outages resulting from erratic end nodes.
Layer 3—IP
IP is a layer 3 network protocol that sits on top of the data link and physical layers.
IP is a best-effort delivery protocol designed ...
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