Network cards: eth0 - eth3 ?

When I do "ip route show" or "ifconfig", I see

eth0
eth1
eth3
lo

Does it mean the computer has 3 network cards ?

(sorry, I only have less than 5 hours with Linux Fedora)

Thanks.

(E-Mail Removed) writes:

>When I do "ip route show" or "ifconfig", I see

>eth0
>eth1
>eth3
>lo

>Does it mean the computer has 3 network cards ?

Possibly. Don't you know?

The server is lying on its side, with one cover removed. Its top part
covered by a power unit (I dare not touch it); I can see two network
cards. It is very difficult to see from behind as the rack is close to
a wall, with lots of wires running behind.

By the way, my office has 2 floors. The PCs at the higher floor have
IP address type 192.168.43.* gateway type 192.168.43.1, whereas the
lower PCs have 192.168.42.* gateway type 192.168.42.1.

Do these indicate how the LAN is wired ?

Thanks.


> >When I do "ip route show" or "ifconfig", I see
> >eth0
> >eth1
> >eth3
> >lo
> >Does it mean the computer has 3 network cards ?
>
> Possibly. Don't you know?

(E-Mail Removed) wrote:
> When I do "ip route show" or "ifconfig", I see
>
> eth0
> eth1
> eth3
> lo
>
> Does it mean the computer has 3 network cards ?
>

In console type; lspci | grep Ethernet

--
Artur 'Bzyk' Frydel | artur.frydel[at]gmail-dot-com
"Always look on the bright side of life."

(E-Mail Removed) wrote:

> When I do "ip route show" or "ifconfig", I see
>
> eth0
> eth1
> eth3
> lo
>
> Does it mean the computer has 3 network cards ?

Not necessarily.
Depending on what network software you are using,
if the current setup does not match any of
the previously used interfaces eth0, eth1, etc,
a new interface will probably be created.

You could look at /etc/udev/rules.d/70-persistent-net.rules .
(At least that is the file on my Fedora-8 system.)

Tell us why you want to know. What is the problem you are trying to solve,
or are you just curious? Is it not working? Is it a leakage point from the
company, etc.

Look in /etc/modprobe.conf and see if there are entries for all three and
what kind of cards they are. Look in
dmesg|less
and look for the three and what they are associated with.


(E-Mail Removed) writes:

>The server is lying on its side, with one cover removed. Its top part
>covered by a power unit (I dare not touch it); I can see two network
>cards. It is very difficult to see from behind as the rack is close to
>a wall, with lots of wires running behind.

>By the way, my office has 2 floors. The PCs at the higher floor have
>IP address type 192.168.43.* gateway type 192.168.43.1, whereas the
>lower PCs have 192.168.42.* gateway type 192.168.42.1.

>Do these indicate how the LAN is wired ?

>Thanks.


>> >When I do "ip route show" or "ifconfig", I see
>> >eth0
>> >eth1
>> >eth3
>> >lo
>> >Does it mean the computer has 3 network cards ?
>>
>> Possibly. Don't you know?

I am trying to learn what is the current network setup; the technical
guy who set up the LAN has resigned.

Nobody knows this monster anymore. :-)



> Tell us why you want to know. What is the problem you are trying to solve,
> or are you just curious? Is it not working? Is it a leakage point from the
> company, etc.
>

(E-Mail Removed) writes:

>I am trying to learn what is the current network setup; the technical
>guy who set up the LAN has resigned.

OK. You can look on the back and see how many rj45 cables come out. And if
there are some antennae for wireless cards. Then look at ifconfig
and see how many networks are listed. And you can do
lspci to see what is reported for the ethernet cards.



>Nobody knows this monster anymore. :-)



>> Tell us why you want to know. What is the problem you are trying to solve,
>> or are you just curious? Is it not working? Is it a leakage point from the
>> company, etc.
>>

(E-Mail Removed) wrote:
> The server is lying on its side, with one cover removed. Its top part
> covered by a power unit (I dare not touch it); I can see two network
> cards. It is very difficult to see from behind as the rack is close to
> a wall, with lots of wires running behind.

Probably 2 Gb nics and 1 100 Mb management nic.

try 'lshw' or 'dmidecode'

(E-Mail Removed) wrote:
> When I do "ip route show" or "ifconfig", I see

> eth0
> eth1
> eth3
> lo

> Does it mean the computer has 3 network cards ?

it means the kernel believes there are three network interfaces
presently available, and that what it used to think was eth2 isn't
around at present. that could be three separate NIC cards/chips, or
it could be some combination of multi-port cards/multiport chips. the
lspci and dmidecode suggestions are spot-on.

rick jones
--
denial, anger, bargaining, depression, acceptance, rebirth...
where do you want to be today?
these opinions are mine, all mine; HP might not want them anyway...
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...