Fujitsu P3NK-4452-01ENZD Manual De Usuario

XG Series User's Guide

Chapter 4 Switch Functions and their Configuration

Basic Switch Functions

4.1 Basic Switch Functions

This section describes the basic switch functions.

XG2600 provides the following two switching modes.
XG0224 and XG0448 provide store-and-forward switching modes only.

•

Store-and-forward switching mode
After the device finishes receiving a frame, it checks the FCS (Frame Check Sequence) and performs a validity check  
(on packet size, etc.) before forwarding the frame. If the switch receives a frame with an error frame, it discards it.

•

Cut-through switching mode
The device transmits the frame to the destination as soon as the first 64 bytes of the frame are received with no errors.
Since the device starts transmitting the frame before it receives the entire frame, this mode allows forwarding at low 
latency.

To change the switching modes, carry out the following procedures in "admin" Operation mode.

XG2600# configure

Switch to Configuration mode.

XG2600(config)# forwardingmode cut-through

Select the (cut-through) for the switching mode.

XG2600(config)# forwardingmode store-and-forward

Select the (store-and-forward) for the switching mode.

XG2600(config)# commit

Apply the configuration.

XG2600(config)# save

Save the configuration.

XG2600(config)# exit

Switch to Operation mode.