Switching vs Routing Presentation

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Switching vs Routing Presentation

• Julia Vuong and Travis Anderson

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Switching vs Routing Overview

• Switching and Routing are the core functionality
  of Internetworking
• Once physical links are added and clean of
  errors, resets, and other problems very little
  time is spent on physical/data link problems.
  Wide Area connections have more link problems but
  are reliable except for wireless communications.
• Most network design and administration issues
  arise from Switching and Routing device
  configuration and implementation.

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Switching vs Routing Foundation

• Switching
• Switching moves traffic from an input interface
  to one or more output interfaces. Switching is
  optimized and has lower latency than routing
  because it can move packets, frames, or cells
  from buffer to buffer with simpler determination
  of the source and destination of the traffic. It
  saves resources because it does not involve extra
  lookups.

• Routing
• Routing is more processing intensive and has
  higher latency than switching as it determines
  path and next hop considerations. The first
  packet routed requires a lookup in the routing
  table to determine the route. The route cache is
  populated after the first packet is routed by the
  route-table lookup. Subsequent traffic for the
  same destination is switched using the routing
  information stored in the route cache.

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Switching Core
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Switching Core
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Content-Addressable Memory
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Transparent Switching Step 1
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Transparent Switching Step 2
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Transparent Switching Algorithm
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Transparent Switching Step 3
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Transparent Switching Diagram
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Routing Step 1
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Routing Step 2
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Routing Algorithm
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Routing Step 3
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Routing Diagram
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Routing a Packet
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Cisco Express Forwarding Functionality
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Cisco Express Forwarding
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Forwarding Information Base
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Adjacency Tables
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Distributed CEF
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DCEF Diagram
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References
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Questions