Sun Microsystems 6U manual Setting Forced Mode Using the ndd Utility

Setting Forced Mode Using the ndd Utility

This section describes how to force a network speed over an interface (forced mode) and to disable autonegotiation.

▼To Set Forced Mode and Disable Autonegotiation

1.Use the ndd utility to select the qfe instance that you want to set.

#ndd -set /dev/qfe instance instance-number

See “Identifying Device Instances” on page 65 for more information.

2.Select one of the four operational mode parameters (adv_100fdx_cap,

adv_100hdx_cap, adv_10fdx_cap, or adv_10hdx_cap), and use the ndd utility to set its value to 1.

For example, to set the 10 Mbps, half-duplex mode, you would set the adv_10hdx_cap parameter to 1.

#ndd -set /dev/qfe adv_10hdx_cap 1

If you set more than one of the operational mode parameters to 1, the driver will select the mode that is highest in the priority order (see “Operational Mode Parameters” on page 62 for more information).

3.Use the ndd utility to disable autonegotiation by setting the adv_autoneg_cap parameter to 0.

#ndd -set /dev/qfe adv_autoneg_cap 0

70 Sun Quad FastEthernet 6U CompactPCI Adapter Installation and User’s Guide • June 2000