[Q] FIFO underflow message logged on cosole

From: Susan Rodriguez <SUSROD_at_HBSI.COM>
Date: Tue, 01 Sep 1998 10:38:01 -0700

I upgraded my network last weekend to support 100Mbit. I had 2
different servers running DE-500-BA cards selected at 10 Mbs. As part
of the upgrade, I set them to 100Mbit with half duplex. From what I
could find on the OSF list, that took 2 steps:

1 - at the console, set the ew* mode to fast
2 - add speed=100 to the ifconfig definition in /etc/rc.config

I did both and seem to be running all right. However, both servers have
logged the following in the messages file:

*****************************************************
TIM:

Sep 1 09:07:03 tim vmunix: tu0: transmit FIFO underflow: threshold
raised to: 256 bytes
Sep 1 09:26:36 tim vmunix: tu0: transmit FIFO underflow: threshold
raised to: 512 bytes

LANCELOT:

Aug 31 08:27:48 lancelot vmunix: tu1: transmit FIFO underflow: threshold
raised to: 256 bytes

***************************************************

What is this really telling me? Is it just informational or do I have a
problem?

TIA

susrod_at_hbsi.com
Received on Tue Sep 01 1998 - 17:38:09 NZST

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