Network Problems (HLFS build 20080328)

Mwanguhya Daniel Murungi dmurungi at
Tue Jul 1 06:34:23 PDT 2008

Here are the three NICS;

02:09.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit
Ethernet (rev 03) [eth2 ]
02:09.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit
Ethernet (rev 03) [ eth1 ]
03:08.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100]
(rev 10) [ eth0 ]

Am using kernel version I tried switching the two networks ( put
the Students on eth1 and NOC on eth2) but still get the same problem. NAPI
and ACPI (though ACPI_PROCFS is not) are enabled. eth1 and eth2 are using
the Broadcom Tigon 3 driver and eth0 is using the e100 driver. 


-----Original Message-----
From: hlfs-dev-bounces at
[mailto:hlfs-dev-bounces at] On Behalf Of Gilles Espinasse
Sent: Monday, June 30, 2008 3:45 PM
To: Hardened LFS Development List
Subject: Re: Network Problems (HLFS build 20080328)

Selon Mwanguhya Daniel Murungi <dmurungi at>:

> I built an HLFS system for use as our Faculty firewall. The machine (Tyan
> motherboard) has 3 network cards, and 1 GB of RAM. We have two networks
> and students). When I connect the NOC network (less than 50 users - eth1),
> everything is fine. When I connect the student's network (> 500 users
> the machine freezes until I remove the network cable from the Student's
> network.
> When I ran my LFS distro on the same machine, both networks are OK and can
> access the Internet. I have looked at the interrupts and ensured each
> network interface has a separate IRQ but I still face the same problem. (I
> also enabled TCP congestion control in the kernel.) Any ideas will be
> appreciated!
> Daniel
Are the three NIC with same hardware?
If not, if you switch the two networks, what happen?

Wich network driver?  with NAPI?
Wich kernel? with acpi enabled?

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