Cables to Go 1000TA/TPC user manual Tuning the Installation

Note: If you are installing the GigaNIX in an SMP machine, you should comment out the standard CFLAGS line in the “Makefile” and uncomment the SMP version of CFLAGS before compiling the driver.

To install the driver object module in the file system, become root and run:

#make install #depmod -a

Configure the card using your preferred configuration tool, or edit the initialization script for the interface directly. On Red Hat, the file /etc/sysconfig/network- scripts/ifcfg-eth0 might look something like this:

DEVICE=eth0

BOOTPROTO=static

IPADDR=192.168.1.10

NETMASK=255.255.255.0

You should also add a line to /etc/conf.modules similar to this:

alias eth0 dpm

to ensure that the kernel loads the appropriate module.

Tuning the Installation

The tunable parameters of the driver, like “Receive” and “Transmit” buffers are put in the file nsm.h under the heading “Tunable parameters.” The default value of RX_QUEUE_SZ is 100. On a high-end system, putting a value of 200 for RX_QUEUE_SZ may give better performance.

To try jumbo frames, the mtu size can be increased using the ifconfig utility, as follows:

#ifconfig <interface-name> mtu <mtu-size> eg: ifconfig eth0 mtu 3000

The BUF_SIZE_MAX value in nsm.h (Tunable parameter) should be changed to: 4096 if you enable jumbo frames.

<mtu-size> can be increased up to 4000 bytes for sane operation.

Please see the installation notes for information on functionality testing and known driver problems.

Asanté FriendlyNET™ GigaNIX™ 1000TA/TPC 32