- Table of Contents
-
- 03-Layer 2-LAN Switching Command References
- 00-Preface
- 01-MAC address table commands
- 02-Bulk interface commands
- 03-Ethernet interface commands
- 04-Ethernet link aggregation commands
- 05-DRNI 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-PBB commands
- 13-Loop detection commands
- 14-Spanning tree commands
- 15-LLDP commands
- 16-L2PT commands
- 17-Service loopback group commands
- 18-Cut-through Layer 2 forwarding commands
- Related Documents
-
| Title | Size | Download |
|---|---|---|
| 18-Cut-through Layer 2 forwarding commands | 38.17 KB |
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.
This command does not take effect on the following ports:
· The two SFP+ ports on the front panel of an S6820-32H switch.
· The two SFP ports on the back panel of an S6820-56HF or S6820-4C switch.
Examples
# Enable cut-through forwarding on the device.
<Sysname> system-view
[Sysname] cut-through enable
