02-Layer 2-LAN Switching Configuration Guide

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14-Cut-through Layer 2 forwarding configuration

Configuring cut-through Layer 2 forwarding

About cut-through Layer 2 forwarding

A cut-through forwarding-enabled device forwards a frame after it receives the first 64 bytes of the frame. This feature reduces the transmission time of a frame and enhances forwarding performance.

Restrictions and guidelines for cut-through Layer 2 forwarding configuration

A frame is forwarded before its CRC field is received, and thus CRC-error frames are forwarded instead of dropped.


1.     Enter system view.


2.     Enable cut-through forwarding.

cut-through enable

By default, cut-through forwarding is disabled.


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