NetBSD Problem Report #32165

From www@netbsd.org  Sat Nov 26 11:26:34 2005
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Date: Sat, 26 Nov 2005 11:26:34 +0000 (UTC)
From: jadacuma@ched.gov.ph
Reply-To: jadacuma@ched.gov.ph
To: gnats-bugs@netbsd.org
Subject: wm0: discarding oversize frame (len=-4)
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>Number:         32165
>Category:       kern
>Synopsis:       wm0: discarding oversize frame (len=-4)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Nov 26 11:27:00 +0000 2005
>Last-Modified:  Sun Feb 26 16:15:16 +0000 2012
>Originator:     Joseph A. Dacuma
>Release:        NetBSD 3
>Organization:
Commission on Higher Education (Philippines)
>Environment:
NetBSD 3.0_BETA
>Description:
My current setup is a client PC, IBM R51 with an Intel Pro/1000 MT mobile connection and a Dell 2800 with i82541GI 1000 BASET Ethernet rev. 5 card.

To be sure I tried several possible scenarios. Ifconfig.wm0 was configured with media auto select and tried transferring 2 iso files with sizes of 369MB and 582MB respectively:

1) Both units connected to a 3com Superstack II Dual Speed Hub. Showing
and ifconfig -a result with (100base TX).

2) Both units connected to a D-Link Fast Ethernet switch (DES-1016D).
Showing an ifcofig -a result with (100 baseTX full-duplex, flow control,rx
pause, tx pause).

3) Both units connected directly using a cross connect cable. Showing an
ifcofig -a result with (1000 baseT full-duplex, flow control,rx pause, tx
pause).

To be sure, I crimped fresh CAT5e cables using T568A and T568B wiring
standards. Also, vendor supplied CAT5 cables both straight-through and
cross connect cables. Further, I isolated the network cables from any
power cords to rule out the possibility of EMI.

All three setups yeilded the same results. With error messages appearing
on the test server's console "wm0: discarding oversize frame (len=-4)".

I do get these messages often. Specially, on large file transfers more
than 300 MB of data.
>How-To-Repeat:
Tried everything again using a fresh reinstall. Still got the same results

Im sure that the NIC is working fine because I tried everything on the same machine with OpenBSD 3.8 installed. Where the NIC was identified under em family.
>Fix:
None.

>Release-Note:

>Audit-Trail:

Responsible-Changed-From-To: gnats-admin->kern-bug-people
Responsible-Changed-By: spz@netbsd.org
Responsible-Changed-When: Sat, 03 Dec 2005 21:07:14 +0000
Responsible-Changed-Why:
kern-bug-people goes with kern


>Unformatted:

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