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- Table of Contents
-
- 04-Layer 2—LAN Switching Command Reference
- 00-Preface
- 01-MAC address table commands
- 02-Ethernet link aggregation commands
- 03-M-LAG commands
- 04-Port isolation commands
- 05-VLAN commands
- 06-MVRP commands
- 07-QinQ commands
- 08-VLAN mapping commands
- 09-Loop detection commands
- 10-Spanning tree commands
- 11-LLDP commands
- 12-Service loopback group commands
- 13-Layer 2 forwarding commands
- Related Documents
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| Title | Size | Download |
|---|---|---|
| 13-Layer 2 forwarding commands | 35.50 KB |
Cut-through Layer 2 forwarding commands
MDC is supported only when the device operates in standalone mode. For more information about standalone mode, see IRF configuration in Virtual Technologies Configuration Guide. For more information about MDC and device models that support MDC, see MDC configuration in Virtual Technologies Configuration Guide.
Cut-through Layer 2 forwarding commands
cut-through enable
Use cut-through enable to enable cut-through forwarding.
Use undo cut-through enable to disable cut-through forwarding.
Syntax
cut-through enable
undo cut-through enable
Default
Cut-through forwarding is disabled.
Views
System view
Predefined user roles
network-admin
mdc-admin
Usage guidelines
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 within the device and enhances forwarding performance.
A frame is forwarded before its CRC field is received, and thus CRC-error frames are forwarded instead of being dropped.
For this command to take effect, save the configuration and reboot the device after you execute it.
Examples
# Enable cut-through forwarding on the device.
<Sysname> system-view
[Sysname] cut-through enable
