Basic Switch Functions; Switching Mode (Xg2600) - Fujitsu XG0224 User Manual

XG Series User's Guide
4.1

Basic Switch Functions

This section describes the basic switch functions.
4.1.1

Switching Mode (XG2600)

XG2600 provides the following two switching modes.
XG0224 / XG0448 / XG0440DC / XG0440DCR 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
XG2600(config)# forwardingmode cut-through
XG2600(config)# forwardingmode store-and-forward
XG2600(config)# commit
XG2600(config)# save
XG2600(config)# exit
Command
Chapter 4 Switch Functions and their Configuration
Switch to Configuration mode.
Select the (cut-through) for the switching mode.
Select the (store-and-forward) for the switching mode.
Apply the configuration.
Save the configuration.
Switch to Operation mode.
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Basic Switch Functions