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XG Series User's Guide Chapter 4 Switch Functions and their Configuration
Basic Switch Functions
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4.1.3 Jumbo Frame Support
The device can transmit jumbo frames of up to 9KB (9216 bytes). (XG0224,XG0448)
The device can transmit jumbo frames of up to 16KB (16128 bytes). (XG2600)
4.1.4 Flow Control
Flow control is a function that prevents frame loss when the receive buffer in the switch overflows due to temporary traffic
overload by using a PAUSE frame.
When the device receives a PAUSE frame, it temporarily stops sending frames at the receive port. If the receive buffer
overflows, it is possible to restrict frame transmission from the connected device by sending a PAUSE frame.
For each port, it is possible to select whether or not to send a PAUSE frame. Select the mode depending on whether the
destination responds to a PAUSE frame or not.
To change the flow control mode, carry out the following procedures in "admin" Operation mode.
4.1.5 Storm Control
The device discards broadcast/multicast frames when the number of received broadcast frames are over a given threshold
to prevent unnecessary waste of bandwidth due to retained broadcast frames on the network. This function is called "Storm
Control".
For each port, it is possible to configure storm control.
When broadcast/multicast frames are discarded by storm control, system logs are output.
To configure storm control, carry out the following procedures in "admin" Operation mode.
•XG2600
Command Task
XG2600# configure Switch to Configuration mode.
XG2600(config)# ether 1-3 flowctl off on Set the flow control mode disable send flow control packets and
enable receive flow control packets.
XG2600(config)# commit Apply the configuration.
XG2600(config)# save Save the configuration.
XG2600(config)# exit Switch to Operation mode.
Command Task
XG2600# configure Switch to Configuration mode.
XG2600(config)# ether 1-5 mac storm 7000000k
8000000k discard
Enable storm control, set broadcast threshold 7000000k bps,
multicast threshold 8000000k bps, and set "discard" when
broadcast and multicast traffic exceeds the threshold.
XG2600(config)# commit Apply the configuration.
XG2600(config)# save Save the configuration.
XG2600(config)# exit Switch to Operation mode.