eth0 works with Linksys hub but not Netgear switch?!?

From: pt (mnemotronic_at_gmail.com)
Date: 07/08/05 

Date: 8 Jul 2005 12:04:24 -0700

I have a weird issue, not really a problem anymore since I figured it
out .... I was swapping & moving network hubs & switches around and
noticed (after some serious hair-pulling) that my server's built-in
network (intel 82559-based) works fine when it's plugged into a Linksys
EW5HUB hub, but not when it's plugged into a Netgear FS608v2 switch
(the hub is plugged into the switch). WHen plugged into the hub
(prepare for idiot-led observations), the hub LED is steady or flashes
as expected ... same for the ethernet LED on the back of the computer,
and eth0 works fine. When plugged into the Netgear switch, the LED on
the switch flashes continuously at about 10 per sec and eth0 doesn't
work at all. The ethernet LED on the computer is steady.

Two other PCs work fine when plugged into either the hub or switch. I
checked all the ports on the switch, so it isn't a flakey port.
/var/log/messages indicates that the server isn't able to get an IP
from my DHCP router/firewall (see below)

Is there some kind of incompatability betweek the 82559 (or e100
driver?) and Netgear?

-----------------------------------------------
Good connection:
 kernel: parport0: irq 7 detected
 kernel: ip_tables: (C) 2000-2002 Netfilter core team
 kernel: ip_conntrack version 2.1 (4095 buckets, 32760 max) - 292 bytes
per conntrack
 kernel: Intel(R) PRO/100 Network Driver - version 2.2.21-k1
 kernel: Copyright (c) 2003 Intel Corporation
 kernel:
 kernel: e100: eth0: Intel(R) PRO/100 Network Connection
 kernel: Hardware receive checksums enabled
 kernel: cpu cycle saver enabled
 kernel:
 netfs: Mounting other filesystems: succeeded
 autofs: automount startup succeeded
 sshd: succeeded
 network: Bringing up interface eth0: succeeded
 xinetd[746]: xinetd Version 2.3.11 started with libwrap loadavg
options compiled in.
 xinetd[746]: Started working: 4 available services
 xinetd: xinetd startup succeeded
 ntpd: ntpd startup succeeded
 ntpd[758]: ntpd 4.1.1c-rc1@1.836 Thu Feb 13 12:17:19 EST 2003 (1)
 ntpd[758]: precision = 9 usec

-----------------------------------------------
Failed connection:
.
.
 kernel: cpu cycle saver enabled
 kernel:
 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
 autofs: automount startup succeeded
 ifup: , pipe 3
 dhcpcd[534]: timed out waiting for a valid DHCP server response
 sshd: succeeded
 xinetd[714]: xinetd Version 2.3.11 started with libwrap loadavg
options compiled in.
 xinetd[714]: Started working: 4 available services
xinetd: xinetd startup succeeded
 ntpd: ntpd startup succeeded

-----------------------------------------------
modinfo e100
filename: /lib/modules/2.4.20-31.9smp/kernel/drivers/net/e100/e100.o
description: "Intel(R) PRO/100 Network Driver"
author: "Intel Corporation, <linux.nics@intel.com>"
license: "GPL"
parm: TxDescriptors int array (min = 1, max = 16),
 description "Number of transmit descriptors"
parm: RxDescriptors int array (min = 1, max = 16),
 description "Number of receive descriptors"
parm: XsumRX int array (min = 1, max = 16),
 description "Disable or enable Receive Checksum offload"
parm: e100_speed_duplex int array (min = 1, max = 16),
 description "Speed and Duplex settings"
parm: ucode int array (min = 1, max = 16),
 description "Disable or enable microcode loading"
parm: ber int array (min = 1, max = 16),
 description "Value for the BER correction algorithm"
parm: flow_control int array (min = 1, max = 16),
 description "Disable or enable Ethernet PAUSE frames processing"
parm: IntDelay int array (min = 1, max = 16),
 description "Value for CPU saver's interrupt delay"
parm: BundleSmallFr int array (min = 1, max = 16),
 description "Disable or enable interrupt bundling of small frames"
parm: BundleMax int array (min = 1, max = 16),
 description "Maximum number for CPU saver's packet bundling"
parm: IFS int array (min = 1, max = 16),
 description "Disable or enable the adaptive IFS algorithm"

RHL (Linux version 2.4.20-31.9smp)
Intel L440gx+ server (dual Piii)

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