Chapter 3 Configuring Driver Parameters 37
By default, autonegotiation mode is enabled for these link parameters. When either
of these parameters arein autonegotiation mode, the vca device communicates with
the link partner to negotiate a compatible value and flow control capability.When a
value other than auto is set for either of these parameters, no negotiation occurs
and the link parameter is configured in forced mode. In forcedmode, the value for
the speed parameter must match between link partners. See “Enabling
Autonegotiation or ForcedMode for Link Parameters With the OpenBoot PROM” on
page41.
▼To Disable Autonegotiation Mode
If your network equipment does not support autonegotiation, or if you want to force
your network speed,duplex,orlink-clock parameters, you can disable the
autonegotiation mode on the vca device.
1. Set the following driver parameters to the values that are described in the
documentation delivered with your link partner device (for example, a switch):
■adv-1000fdx-cap
■adv-1000hdx-cap
■adv-100fdx-cap
■adv-100hdx-cap
■adv-10fdx-cap
■adv-10hdx-cap
■adv-asmpause-cap
■adv-pause-cap
See TABLE3-2 for the descriptions and possible values of these parameters.
2. Set the adv-autoneg-cap parameter to 0.
When you change any ndd link parameter,a message similar to the following
appears:
Note – If you disable autonegotiation, you must enable the speed,duplex, and
link-clock (1000 Mbps only) parameters to operate in forced mode. For
instructions, see “Enabling Autonegotiation or Forced Mode for Link Parameters
Withthe OpenBoot PROM” on page 41.
#ndd -set /dev/vcaN adv-autoneg-cap 0
link up 1000 Mbps half duplex