Allied-telesis AT-2912T Manual de usuario descargar pdf (Pagina 86)

100

Chapter 6: Enabling LINUX

On Red Hat distributions, you can specify “ethtool -s” parameters in the

ifcfg-ethx scripts using the ETHTOOL_OPTS keyword. The specified

ethtool parameters are set up during ifup. For example, go to the following

directory:

/etc/sysconfig/network-scripts/ifcfg-eth0

Add the following line to the script:

ETHTOOL_OPTS=”wol g speed 100 duplex half autoneg off”

Driver Default

Settings

Table 5 lists the default settings of the Linux driver.

Table 4. Ethtool Utility Examples

Action Commands

Display current speed, duplex, and link

status

ethtool eth0

Change speed, duplex mode, and

autonegotiation status to 100Mbps

half duplex, and no autonegotiation

ethtool -s eth0 speed 100

duplex half autoneg off

Change speed, duplex mode, and

autonegotiation status to 100Mbps full

duplex mode, and no autonegotiation

ethtool -s eth0 speed 100

duplex full autoneg off

Display flow control settings ethtool -a eth0

Turn off flow control ethtool -A eth0 autoneg off rx

off tx off

Display offload settings ethtool -k eth0

Turn off TCP Segmentation Offload

(TSO)

ethtool -K etho tso off

Display statistics ethtool -S eth0

Perform a self-test on an interface that

is up and running

ethtool -t eth0

Table 5. Linux Driver Settings

Feature Default Setting

Speed Autonegotiation with all speeds

advertised

Flow control Autonegotiation with Rx and Tx

advertised

MTU 1500 (range 46 - 9000)

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 99 100

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