Enabling flow control on Intel e1000

[Kaplan, Andrew H.]

Hi there --

One possible solution could be to go to the
/etc/sysconfig/network-scripts/ifcfg-ethX
file and add a line similar to the one shown below.

ETHTOOL_OPTS="speed 1000 duplex full autoneg off"

This would hardwire the NIC to 1 GB speed. 

-----Original Message-----
From: fedora-list-bounces at redhat.com
[mailto:fedora-list-bounces at redhat.com]On Behalf Of Jason L Tibbitts III
Sent: Saturday, July 16, 2005 1:08 PM
To: fedora-list at redhat.com
Subject: Enabling flow control on Intel e1000


I have a nice rack of servers to which I've recently added a gigabit
switch.  Flow control is enabled on the the relevant switch ports.
The servers with Tigon (tg3) Ethernet automatically enable flow
control, but the servers with Intel e1000 Ethernet don't, and I
believe this is causing problems when doing things like UDP NFS
service to 100Mbit devices.  (Kickstart-over-NFS is terribly slow, for
example.)

Is there a reason that e1000 doesn't enable flow control when the
switch advertises it as the tg3 driver does?  Is there any way to
force it to negotiate flow control with the switch?

 - J<

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