Re: [SLUG] Too many ethx ports

2008-09-17 Thread R.G.Salisbury



Dean

Gerald wrote:

Hi Guy's,
How can I get rid of eth1,eth2,and just keep eth0. with no
references to
the other ports?
The system is very confused and will not send/receive email with
all the
network ports. The reason for the number of ports is because I 
tried a wireless

network
when the on board 1GB network failed that was eth0, then the
wireless
becane eth1 the next trail wan a 1GB Intel network card that
became
eth2.
Now I want to get rid of eth0,eth1,eth2 then have eth0 only.
The question is HOW?
Many thanks in advance
Gezza






FYI
a few pointers that have worked for me.



hardware detection is heavily influenced by

1/  /etc/modprobe.conf
2/  existing devices  detected  ( in redhat 
/etc/sysconfig/network-scripts/ifcfg-ethX   )

3/  whether the existing devices are bound to the MAC address
4/  the order the kernel detection software sees the motherboard slots



Often to fix up the mess you can find yourself in :
Start afresh is often a good choice.when hardware gets replaced, 
moved etc..


This is a redhat solution but the logic applies to othe OSs

a/delete all aliased  NIC entries in   /etc/modprobe.conf
b/ remove all /etc/sysconfig/network-scripts/ifcfg-ethXfiles.
  Also remove any static routing files 
(/etc/sysconfig/network-scripts/route-ethX

c/ remove harware detection file ( in redhat /etc/sysconfig/hwconf )
d/  power down remove all Nics temporarily.
e/ power up  with no NICS & test that no networking  services  tries to 
reference any nics.  ( if so the profile /etc/sysconfig/network 
directory may need to be removed)
f/  power down ; add 1 NIC  ; powerup and 
/etc/sysconfig/network-scripts/ifcfg-eth0 is hopefully created.

Also an entry in /etc/modprobe.conf may now be  aliasing to that NIC.
Nic should be seen in /etc/sysconfig/hwconf  also

g/ find the MAC address of the card ( ifconfig   |grep 
  )
Bind found MAC address to that nic in 
/etc/sysconfig/network-scripts/ifcfg-eth0

#EG  add 1 line as follows
HWADDR=ab:cd:ef:gh:xx:xx
as apprporiate

That binding of the MAC to the device   ethX  will prevent it from being 
renamed if more are added or removed.


Test with :
ifdown eth0 ; if up eth0 ; ifconfig eth0

Power down ,  add additional NICs following the same logic to bind the MAC 
to the device.


NOW  the kernel will not reorder or rename them when you mess with your 
system.










--
http://fragfest.com.au




--
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html


RE: [SLUG] Too many ethx ports

2008-09-17 Thread [EMAIL PROTECTED]
Apologies for top posting - this web based client does not accommodate
proper indenting.

Gerald, I am pretty sure you are using PCLOS or Mandriva with KDE.

You should be able to go to /etc/sysconfig/network-scripts and remove the
files of the form ifcfg-ethX.  When done, use MCC -> Network & Internet to
set up your network again using (now) the only available network card eth0.
If have tested this and it works

Regards,

Rick

Original Message:
-
From: Gerald [EMAIL PROTECTED]
Date: Thu, 18 Sep 2008 07:14:43 +1000
To: slug@slug.org.au
Subject: [SLUG] Too many ethx ports


Hi Guy's,
How can I get rid of eth1,eth2,and just keep eth0. with no
references to
the other ports?
The system is very confused and will not send/receive email with
all the
network ports. 
The reason for the number of ports is because I tried a wireless
network
when the on board 1GB network failed that was eth0, then the
wireless
becane eth1 the next trail wan a 1GB Intel network card that
became
eth2.
Now I want to get rid of eth0,eth1,eth2 then have eth0 only.
The question is HOW?
Many thanks in advance
Gezza



-- 
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html



mail2web.com – Enhanced email for the mobile individual based on Microsoft®
Exchange - http://link.mail2web.com/Personal/EnhancedEmail


--
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html


Re: [SLUG] Too many ethx ports

2008-09-17 Thread Erik de Castro Lopo
Dean Hamstead wrote:

> what distribution are you running

And what GUI, KDE or GNOME?

Erik
-- 
-
Erik de Castro Lopo
-
"Using Java as a general purpose application development language
is like going big game hunting armed with Nerf weapons."
-- Author Unknown
-- 
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html


Re: [SLUG] Too many ethx ports

2008-09-17 Thread Dean Hamstead

what distribution are you running


Dean

Gerald wrote:

Hi Guy's,
How can I get rid of eth1,eth2,and just keep eth0. with no
references to
the other ports?
The system is very confused and will not send/receive email with
all the
network ports. 
The reason for the number of ports is because I tried a wireless

network
when the on board 1GB network failed that was eth0, then the
wireless
becane eth1 the next trail wan a 1GB Intel network card that
became
eth2.
Now I want to get rid of eth0,eth1,eth2 then have eth0 only.
The question is HOW?
Many thanks in advance
Gezza





--
http://fragfest.com.au
--
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html