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- Table of Contents
-
- 03-Layer 2-LAN Switching Command Reference
- 00-Preface
- 01-MAC address table commands
- 02-Bulk interface commands
- 03-Ethernet interface commands
- 04-Ethernet link aggregation commands
- 05-M-LAG commands
- 06-Port isolation commands
- 07-VLAN commands
- 08-MVRP commands
- 09-Loopback, null, and inloopback interface commands
- 10-QinQ commands
- 11-VLAN mapping commands
- 12-Loop detection commands
- 13-Spanning tree commands
- 14-LLDP commands
- 15-L2PT commands
- 16-Service loopback group commands
- 17-Layer 2 forwarding commands
- Related Documents
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| Title | Size | Download |
|---|---|---|
| 17-Layer 2 forwarding commands | 33.88 KB |
Cut-through Layer 2 forwarding commands
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
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.
The cut-through forwarding does not take effect for traffic from multiple ingress ports to the same destination port or traffic from one ingress port to multiple destination ports.
This command does not take effect on the two SFP ports on the back panel of an S6850-56HF or S9850-4C switch.
Examples
# Enable cut-through forwarding on the device.
<Sysname> system-view
[Sysname] cut-through enable
