SMC Networks SMC9452TX manual For example

INSTALLING AND CONFIGURING NETWORK DRIVERS

RxBufSize: This is the size of the receive buffer memory space allocated per receive descriptor (the label given to each packet received). The default value is 2048. It should be set at 2048 to ensure good performance when not using jumbo frames. When using jumbo frames it should be set at 4096.

MaxRxDesc: This is the maximum number of receive descriptors that will be allocated. This value should be at least 100. The default value is 200.

MaxTxDesc: This is the maximum number of transmit descriptors that will be allocated. This value should be at least 100. The default value is 200.

<mtu-size>:This is the maximum transmission packet size and can be increased up to 4000 bytes for effective operation. To enable the use of jumbo frames, the mtu size can be increased by using the ifconfig utility, as follows

#ifconfig <interface-name> mtu <mtu-size>

for example:

ifconfig eth0 mtu 3000

Assuming the card has been assigned the device name “eth0,” the following command brings the card into an operational state:

# ifconfig eth0 up

Next the driver must be bound to an active protocol, almost always TCP/IP, using the following command:

#ifup eth0

Note that this is meaningful only if the system can find a configuration script that contains the necessary network info. A sample is given below.

DEVICE=eth0

USERCTL=no

ONBOOT=yes

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