Login
- Table of Contents
-
- 03-Layer 2-LAN Switching Configuration Guide
- 00-Preface
- 01-MAC address table configuration
- 02-Bulk interface configuration
- 03-Ethernet interface configuration
- 04-Ethernet link aggregation configuration
- 05-M-LAG configuration
- 06-Port isolation configuration
- 07-VLAN configuration
- 08-MVRP configuration
- 09-Loopback, null, and inloopback interface configuration
- 10-QinQ configuration
- 11-VLAN mapping configuration
- 12-Loop detection configuration
- 13-Spanning tree configuration
- 14-LLDP configuration
- 15-L2PT configuration
- 16-Service loopback group configuration
- 17-Cut-through Layer 2 forwarding configuration
- Related Documents
-
| Title | Size | Download |
|---|---|---|
| 17-Cut-through Layer 2 forwarding configuration | 33.05 KB |
Configuring cut-through Layer 2 forwarding
About cut-through Layer 2 forwarding
Restrictions and guidelines for 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
With cut-through forwarding, the device forwards CRC-error frames because it starts forwarding frames before their CRC field is received.
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 feature is not available on the two SFP ports on the back panel of an S6850-56HF or S9850-4C switch.
If the interface rate is 1000 Mbps, cut-through forwarding does not take effect.
Procedure
1. Enter system view.
system-view
2. Enable cut-through forwarding.
cut-through enable
By default, cut-through forwarding is disabled.
