Virtual Ethernet Interfaces

OS: suse 9.1
kernel 2.6.5-7.108-default


Trying to create an interface eth0:1

I've tried using YAST to create the virtual to no avail;
it adds additional lines to the /etc/sysconfig/network/ifcfg-eth0
called nm_* but they don't seem to be working.

I've tried manually creating /etc/s/network/ifcfg-eth0:1
but 'ifup eth0:1' fails w/
ERROR: Interface eth0:1 is not available

Is there something new in 2.6??

Also, what is the "UNIQUE='B35A.iShmefsNM+5' in the ifcfg-eth0 refer to?
[it's not the mac addr]..

Thanks,
TroyC

p.s. if there's a new howto etc, plz provide the link.
I googled & the only thing I found was a reference stating that
the "ethx:y" nomenclature was depreciated... anyone know bout that?

Troy C wrote:

> I've tried manually creating /etc/s/network/ifcfg-eth0:1
> but 'ifup eth0:1' fails w/
> ERROR: Interface eth0:1 is not available

Use "ipconfig eth0 add 192.168.blah.blah" to create a virtual interface.
This is an undocumented feature



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Yes,
Sorry, failed to mention that.

Yes it works manually.
So I can *MANUALLY* setup 'ifup eth0:1 192.168.1.1 netmask 255.255.255.0
up' and all is good. However upon reboot, there's no [working] way to
manually-automagically set it.

Any other thoughts about the config setup?

TroyC

On Mon, 04 Oct 2004 21:43:42 +0000, Innocenti Maresin wrote:

> Troy C wrote:
>
>> I've tried manually creating /etc/s/network/ifcfg-eth0:1
>> but 'ifup eth0:1' fails w/
>> ERROR: Interface eth0:1 is not available
>
> Use "ipconfig eth0 add 192.168.blah.blah" to create a virtual interface.
> This is an undocumented feature

On 2004-10-04, Troy C <(E-Mail Removed)> wrote:
> up' and all is good. However upon reboot, there's no [working] way to
> manually-automagically set it.

Change the configuration scripts where the interfaces are configured
and add in there your moridification.

Davide


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When all you have is a Swiss Army Knife, every problem looks like email.
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On Tue, 05 Oct 2004 06:05:27 +0000, Davide Bianchi wrote:

> On 2004-10-04, Troy C <(E-Mail Removed)> wrote:
>> up' and all is good. However upon reboot, there's no [working] way to
>> manually-automagically set it.
>
> Change the configuration scripts where the interfaces are configured
> and add in there your moridification.
>
> Davide
You will find in /etc/sysconfig/networking a file ifcfg-eth-id-MAC-Address
Edit this file with eg:

BROADCAST1='192.168.100.255'
BROADCAST2='192.168.90.255'
IPADDR1='192.168.100.1'
IPADDR2='192.168.90.1'
NETMASK1='255.255.255.0'
NETMASK2='255.255.255.0'
NETWORK1='192.168.100.0'
NETWORK2='192.168.90.0'

then do
rcnetwork restart
ip addr
and you should see the two networks assigned to your NIC.
BTW: don't use ifconfig eth0:1, the better way is to do it with ip addr
add

Frank

Frank,

Thanks, that worked. [well on SUSE, I needed underscores [_1 _2]]

But when I do an 'ifconfig -a |more'
it doesn't show the additional interface...is there a way to see the
'additional' ips?

TroyC

On Tue,
05 Oct 2004 12:24:15 +0200, Frank Harenberg wrote:

>
> On Tue, 05 Oct 2004 06:05:27 +0000, Davide Bianchi wrote:
>
>> On 2004-10-04, Troy C <(E-Mail Removed)> wrote:
>>> up' and all is good. However upon reboot, there's no [working] way to
>>> manually-automagically set it.
>>
>> Change the configuration scripts where the interfaces are configured
>> and add in there your moridification.
>>
>> Davide
> You will find in /etc/sysconfig/networking a file ifcfg-eth-id-MAC-Address
> Edit this file with eg:
>
> BROADCAST1='192.168.100.255'
> BROADCAST2='192.168.90.255'
> IPADDR1='192.168.100.1'
> IPADDR2='192.168.90.1'
> NETMASK1='255.255.255.0'
> NETMASK2='255.255.255.0'
> NETWORK1='192.168.100.0'
> NETWORK2='192.168.90.0'
>
> then do
> rcnetwork restart
> ip addr
> and you should see the two networks assigned to your NIC.
> BTW: don't use ifconfig eth0:1, the better way is to do it with ip addr
> add
>
> Frank

Troy C wrote:
> Frank,
>
> Thanks, that worked. [well on SUSE, I needed underscores [_1 _2]]
>
> But when I do an 'ifconfig -a |more'
> it doesn't show the additional interface...is there a way to see the
> 'additional' ips?

Use the command "ip". Try "ip addr"

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