Features That Affect Performance

Performance is derived from the switching mechanism you are using. Some Cisco IOS features require special handling and cannot be switched until the additional processing they require has been performed. This special handling is not processing that the interface processors can do. Because these features require additional processing, they affect switching performance. These features include

  • Queuing

  • Random Early Detection

  • Compression

  • Filtering

  • Encryption

  • Accounting

Queuing

Queuing occurs when network congestion occurs. When traffic is moving well within the network, packets are sent as they arrive at the interface. Cisco IOS software implements four different queuing algorithms:

  • First-in, first-out (FIFO) queuing ...

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