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## Rate Shaping and Port Shaping Overview

Rate shaping throttles the rate at which queues transmit packets. Rate shaping is TCP friendly; that is, it buffers packets that are above the rate, rather than dropping them.

Port shaping enables you to shape the aggregate traffic through a port or channel to a rate that is less than the line or port rate. With port shaping, you can configure scheduler nodes at the port level, as shown in Figure 9.

Figure 9: Port Shaping on an Ethernet Module

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The per-port shaping feature provides the ability to shape the output of a port.

#### Related Topics

- Configuring Rate Shaping for a Scheduler Node or Queue
- Configuring Port Shaping

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