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- Table of Contents
-
- 03-Layer 2—LAN Switching Configuration Guide
- 00-Preface
- 01-MAC address table configuration
- 02-Ethernet link aggregation configuration
- 03-M-LAG configuration
- 04-Port isolation configuration
- 05-VLAN configuration
- 06-MVRP configuration
- 07-QinQ configuration
- 08-VLAN mapping configuration
- 09-Loop detection configuration
- 10-LLDP configuration
- 11-Spanning tree configuration
- 12-L2PT configuration
- 13-Layer 2 forwarding configuration
- 14-Bulk interface configuration
- 15-Ethernet interface configuration
- 16-Loopback, null, and inloopback interface configuration
- Related Documents
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| Title | Size | Download |
|---|---|---|
| 13-Layer 2 forwarding configuration | 35.95 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.
In an IRF fabric, cut-through Layer 2 forwarding does not take effect for traffic where the ingress and egress interfaces are not on the same member device.
Cut-through Layer 2 forwarding takes effect only on multicast packets.
Procedure
1. Enter system view.
system-view
2. Enable cut-through forwarding.
cut-through enable
By default, cut-through forwarding is disabled.