Setting up two identical NICs

I have a 486 which I wish to set up as a firewall using two identical
NICs, one for my DMZ and the other for my network of workstations.

The NICs are both DEC EtherWORKS DE204 (ISA cards). Each works fine
separately, but I can't use them both at once because of interrupt
conflict and because I don't know how to configure them.

Does anyone know how to configure them to use a non-default interrupt?

Ned
--
Public key: http://pgp.mit.edu/ http://www.keyserver.net/en/
Fingerprint: D17C FDD5 BBA8 8687 42E3 C8F2 C9FB 0314 E17A 0CD7

[Followup-To set to COLN]

In comp.os.linux.networking Ned Latham <(E-Mail Removed)> wrote:
> I have a 486 which I wish to set up as a firewall using two identical
> NICs, one for my DMZ and the other for my network of workstations.
>
> The NICs are both DEC EtherWORKS DE204 (ISA cards). Each works fine
> separately, but I can't use them both at once because of interrupt
> conflict and because I don't know how to configure them.
>
> Does anyone know how to configure them to use a non-default interrupt?

I imagine that this process will be outlined in some detail in the
Network HOWTO, but anyway...

The procedure you need to use is as follows.

If the cards can have their IO/IRQ configured using a jumper, set them
to different values.

If they can't, you'll have to get hold of the setup disk (usually a DOS
program), which you can use to set the IO and IRQ via software
configuration. This also allows you to test the card. You must do this
when you have only one card in the machine, until they have unique IO
and IRQ addresses.

You may probably use the DIAG.EXE program to do this.
http://www.network-drivers.com/drivers/32/32430.htm

--
Cameron Kerr
(E-Mail Removed) : http://nzgeeks.org/cameron/
Empowered by Perl!

On Mon, 02 Feb 2004 04:21:58 +0000, Ned Latham wrote:

> Does anyone know how to configure them to use a non-default interrupt?

You can pass the second NIC to the kernel parameter at boot time, eg
'append = "ether=0,0,eth1"' in lilo.conf. This will automatically assign a
different IRQ to the second card. See
/usr/src/linux/Documentation/kernel-parameters.txt or something like that.

--

..

Cameron Kerr wrote in <(E-Mail Removed)>:
>
> [Followup-To set to COLN]

Undone. I'm seeking advice from both groups.

> Ned Latham wrote:
> >
> > I have a 486 which I wish to set up as a firewall using two identical
> > NICs, one for my DMZ and the other for my network of workstations.
> >
> > The NICs are both DEC EtherWORKS DE204 (ISA cards). Each works fine
> > separately, but I can't use them both at once because of interrupt
> > conflict and because I don't know how to configure them.
> >
> > Does anyone know how to configure them to use a non-default interrupt?
>
> I imagine that this process will be outlined in some detail in the
> Network HOWTO, but anyway...

I've read them. It's not.

> The procedure you need to use is as follows.
>
> If the cards can have their IO/IRQ configured using a jumper, set them
> to different values.

"If". IOW, you don't know the card. I'm asking for information
*specific* to that card. I thought that was clear.

It's obsolete, DEC are out of business, COMPAQ don't support their
H/W and there are no manuals that I can find. I'm asking for someone
who knows that card to help with information.

There are two jumpers on the card, labelled W1 and W2. With one card
in the machine, it behaves as follows:

W1 W2 boot

0 0 eth0 at 0x300 on IRQ 5
0 1 eth0: ewrk3_probe cannot find device at 0x300.
1 0 eth0: ewrk3_probe cannot find device at 0x300.
1 1 eth0: ewrk3_probe cannot find device at 0x300.

I have no idea what the links actually do.

With two cards in the machine I can get one working if the other's
jumpers are set to 01, 10 or 11; ie, so that it won't work.

It seems that erwk3 insists on 0x300 and IRQ 5. Does anyone know how
to alter that, and/or have info about the card?

----snip----

Ned
--
Public key: http://pgp.mit.edu/ http://www.keyserver.net/en/
Fingerprint: D17C FDD5 BBA8 8687 42E3 C8F2 C9FB 0314 E17A 0CD7

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

does this link help? i didn't read anything from it do i don't know
if the files are what you are looking for.
http://www.network-drivers.com/drivers/32/32430.htm or here
http://www.network-drivers.com/drivers/1/1581.htm. here's a manual
for it in pdf
http://h18000.www1.hp.com/support/di...ve/nics/manual
s/ (under EtherWorks 3). you can probably get EZWORKS here (the dos
config utility)
http://ftp.support.compaq.com.au/pub.../e3kit251.READ
ME (clearly HP IS supporting this driver, at least partially). here
http://student.fsb.hr/download/drive...7/install/read
me.txt and here
http://student.fsb.hr/download/drive...96/release.not
for explanation of the utility.

Linux recognizes this as: eth0 DE204-AB at 0x300, 2k RAM window at
0xd0000 and uses IRQ5

i have to ask, did you even try googling? i found all this stuff
(including the EZWORKS utility) in about 5 minutes...

oliver

-----BEGIN PGP SIGNATURE-----
Version: PGP 8.0.3

iQA/AwUBQB6J/7coUT0UavXJEQK/WACg5ycgOfdUf+lguSOFJMtFQK0tdHgAoJZe
0aj07VBz1NYH1QicAwhPviCj
=yjXu
-----END PGP SIGNATURE-----

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

> http://h18000.www1.hp.com/support/di...hive/nics/manu
> al s/ (under EtherWorks 3). you can probably get EZWORKS here (the
> dos

this link broke when i posted. make sure you tak on the "s/" to the
end of it otherwise it won't work. the last two directories should
look like .../nics/manuals/

oliver

-----BEGIN PGP SIGNATURE-----
Version: PGP 8.0.3

iQA/AwUBQB6K0rcoUT0UavXJEQJGZgCgjj16yIqwyZDwPMoMEhwTO6 LXvGEAoO+c
yMIf2lSZVrGs5O2t/pPI6t2C
=rbr4
-----END PGP SIGNATURE-----

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

> http://ftp.support.compaq.com.au/pub...os/e3kit251.RE
> AD ME (clearly HP IS supporting this driver, at least partially).
> here

this broke too... the last bit is .../dos/e3kit251.README

> http://student.fsb.hr/download/drive...997/install/re
> ad me.txt and here

this too. .../install/readme.txt

-----BEGIN PGP SIGNATURE-----
Version: PGP 8.0.3

iQA/AwUBQB6P3rcoUT0UavXJEQIAoACgqRfgod9wftR0j+VZQoDENg aUpBkAnRLo
ccr0qt1vQf5EaBwEqOsfrSzG
=osxK
-----END PGP SIGNATURE-----

(E-Mail Removed) (Ned Latham) writes:

> Cameron Kerr wrote in <(E-Mail Removed)>:

[snip]

> > Ned Latham wrote:
> > >
> > > I have a 486 which I wish to set up as a firewall using two identical
> > > NICs, one for my DMZ and the other for my network of workstations.
> > >
> > > The NICs are both DEC EtherWORKS DE204 (ISA cards). Each works fine
> > > separately, but I can't use them both at once because of interrupt
> > > conflict and because I don't know how to configure them.
> > >
> > > Does anyone know how to configure them to use a non-default interrupt?
> >
> > I imagine that this process will be outlined in some detail in the
> > Network HOWTO, but anyway...
>
> I've read them. It's not.

It is mentioned in the Ethernet-HOWTO that there are tools in an
'ewrk3tools' subdirectory of the driver distribution which allow
setup of the card under Linux, similar to the 'NICSETUP.EXE' tools
provided on the DOS drivers disk. So that's what you need to look for.

[snip]

> There are two jumpers on the card, labelled W1 and W2. With one card
> in the machine, it behaves as follows:
>
> W1 W2 boot
>
> 0 0 eth0 at 0x300 on IRQ 5
> 0 1 eth0: ewrk3_probe cannot find device at 0x300.
> 1 0 eth0: ewrk3_probe cannot find device at 0x300.
> 1 1 eth0: ewrk3_probe cannot find device at 0x300.
>
> I have no idea what the links actually do.

The jumpers are to provide a temporary override of the default programmed
I/O port value on the card so that two cards don't conflict with each other
before being assigned an I/O port, memory address, and IRQ by the user.

Apparently, W1=1 means override the programmed values on the card.
W2=1 sets the I/O port to 0x200, W2=0 sets it to 0x280. Once you program
the values on the card using NICSETUP.EXE or ewrk3tools, you remove the
jumpers.

> It seems that erwk3 insists on 0x300 and IRQ 5. Does anyone know how
> to alter that, and/or have info about the card?

0x300 is the only I/O port probed by the driver. However, you can give
an alternate address in /etc/modules.conf using the options "irq=x io=y".

Scott
--
Scott Hemphill (E-Mail Removed)
"This isn't flying. This is falling, with style." -- Buzz Lightyear

"Oliver O'Boyle" <(E-Mail Removed)> writes:

> i have to ask, did you even try googling? i found all this stuff
> (including the EZWORKS utility) in about 5 minutes...

I also found some links by Googling:

> h18003.www1.hp.com/support/digital_networks_archive/ nics/tips/question.txt
> deathrow.vistech.net/~cvisors/DEC94MDS/lemacomb.pdf

Scott
--
Scott Hemphill (E-Mail Removed)
"This isn't flying. This is falling, with style." -- Buzz Lightyear

Ned Latham <(E-Mail Removed)> wrote:
> I have a 486 which I wish to set up as a firewall using two identical
> NICs, one for my DMZ and the other for my network of workstations.

> The NICs are both DEC EtherWORKS DE204 (ISA cards). Each works fine
> separately, but I can't use them both at once because of interrupt
> conflict and because I don't know how to configure them.

> Does anyone know how to configure them to use a non-default interrupt?

I have no experience with the card but perhaps a look at the file

Documentation/networking/ewrk3.txt

in the Linux source would help you.

--
Clifford Kite Email: "echo xvgr_yvahk-(E-Mail Removed)|rot13"
PPP-Q&A links, downloads: http://ckite.no-ip.net/
/* 97.3% of all statistics are made up. */