Re: [lartc] Virtual Interface

Re: [lartc] Virtual Interface

[list user]

Hi Roger,

[big snip: lost o.p.]

There are a couple of different approaches you might try.  One is to use
uml-utilities' tunctl to create an ethernet tap.   Another is to use the
dummy interface.  With either method you can bridge, route, configure as
you would a physical device using ifconfig and/or ip.

The following methods work for me.  I use Fedora Core 4.  Its network
setup methods are in /etc/sysconfig/network-scripts.

cd /etc/sysconfig/network-scripts
ln -s ifup-eth ifup-tap
ln -s ifdown-eth ifdown-tap
echo 'ip link show tap0 | grep "tap0" 2>&1 >/dev/null ||  tunctl -t tap0
DEVICE=tap0
TYPE=ethernet
ONBOOT=yes
BOOTPROTO=static
MACADDRZ:5a:5a:5a:5a:5a
NETWORK\x192.168.0.0
IPADDR\x192.168.0.1
BROADCAST\x192.168.0.255
NETMASK%5.255.255.0' > ifcfg-tap0
ifup tap0

ln -s ifup-eth0 ifup-dummy
ln -s ifdown-eth ifdown-dummy
echo 'ip link show dummy0 | grep "dummy0" 2>&1 >/dev/null || {
  ip link set dummy0 up
  ip link set dummy0 arp on
  ip link set dummy0 multicast on
}
DEVICE=dummy0
TYPE=ethernet
ONBOOT=yes
BOOTPROTO=static
MACADDR¤:a5:a5:a5:a5:a5
NETWORK\x192.168.0.0
IPADDR\x192.168.0.2
BROADCAST\x192.168.0.255
NETMASK%5.255.255.0' > ifcfg-dummy0
ifup dummy0

If all went well there should now be two new virtual ethernet devices,
tap0 and dummy0.

Hope this information is useful to you,
Mike Wright :m)

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Re: [lartc] Virtual Interface

[Roger Singh]

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Mike,

Thanks. I will try it..
I have not explained the puspose for this doing this - just to give you an
idea I want to create around 200 virtual interfaces and send traffice
through all the interfaces simulating traffic comming from different
networks. Do you think this approach will scale to that level?

Roger


On 2/3/06, list user <nhgxfjijdrcd@mailinator.com> wrote:
>
> Hi Roger,
>
> [big snip: lost o.p.]
>
> There are a couple of different approaches you might try.  One is to use
> uml-utilities' tunctl to create an ethernet tap.   Another is to use the
> dummy interface.  With either method you can bridge, route, configure as
> you would a physical device using ifconfig and/or ip.
>
> The following methods work for me.  I use Fedora Core 4.  Its network
> setup methods are in /etc/sysconfig/network-scripts.
>
> cd /etc/sysconfig/network-scripts
> ln -s ifup-eth ifup-tap
> ln -s ifdown-eth ifdown-tap
> echo 'ip link show tap0 | grep "tap0" 2>&1 >/dev/null ||  tunctl -t tap0
> DEVICE=tap0
> TYPE=ethernet
> ONBOOT=yes
> BOOTPROTO=static
> MACADDR=5a:5a:5a:5a:5a:5a
> NETWORK=192.168.0.0
> IPADDR=192.168.0.1
> BROADCAST=192.168.0.255
> NETMASK=255.255.255.0' > ifcfg-tap0
> ifup tap0
>
> ln -s ifup-eth0 ifup-dummy
> ln -s ifdown-eth ifdown-dummy
> echo 'ip link show dummy0 | grep "dummy0" 2>&1 >/dev/null || {
> ip link set dummy0 up
> ip link set dummy0 arp on
> ip link set dummy0 multicast on
> }
> DEVICE=dummy0
> TYPE=ethernet
> ONBOOT=yes
> BOOTPROTO=static
> MACADDR=a4:a5:a5:a5:a5:a5
> NETWORK=192.168.0.0
> IPADDR=192.168.0.2
> BROADCAST=192.168.0.255
> NETMASK=255.255.255.0' > ifcfg-dummy0
> ifup dummy0
>
> If all went well there should now be two new virtual ethernet devices,
> tap0 and dummy0.
>
> Hope this information is useful to you,
> Mike Wright :m)
>
> _______________________________________________
> LARTC mailing list
> LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
>

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[LARTC] virtual interface

[alen sarkinovic]

can i add HTB rule on virtual interface\
example: eth0:0

alens
----- Original Message -----
From: "Stef Coene" <stef.coene@docum.org>
To: "jayesh rathod" <jayesh_rathod@sify.com>; <lartc@mailman.ds9a.nl>
Sent: Sunday, January 04, 2004 10:41 AM
Subject: Re: [LARTC] HTB filters - pls help me


> On Sunday 04 January 2004 07:27, jayesh rathod wrote:
> > Hi,
> >
> > we r using HTB algorithm,for traffic shaping, we are facing a problem.
> >
> > we are able to create multiple classes,filters. But when we delete 1
filter
> > all filter gets deleted. how do we avoid that.
> >
> > waiting for you reply
> What I do, is creating a script that delets the root qdisc and re-add
> everything.  Deleting the root qdisc delets all classes and filters.  So I
> never delete a filter.
> Anyway, can you post your commands ?
>
> Stef
>
> --
> stef.coene@docum.org
>  "Using Linux as bandwidth manager"
>      http://www.docum.org/
>      #lartc @ irc.openprojects.net
>
> _______________________________________________
> LARTC mailing list / LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
>
>

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Re: [LARTC] virtual interface

[Stef Coene]

On Monday 05 January 2004 05:55, alen sarkinovic wrote:
> can i add HTB rule on virtual interface\
> example: eth0:0
No.

Stef

-- 
stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
     #lartc @ irc.openprojects.net

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Re: [LARTC] virtual interface

[Martin A. Brown]

Alen,

 : can i add HTB rule on virtual interface?
 : example: eth0:0

First, it's not really a virtual interface--it's just a convention from
the old days of IP aliasing to have names like eth0:0.  The IP exists and
is active on an interface, eth0 in your case.

The short answer is "no".  Traffic control occurs just prior to the
release of the packet for transmission by the hardware driver.  See the
KPTD [0].

You can however select packets based on many characteristics, so you may
be able to accomplish what you need.  You'll use characteristics other
than the label "eth0:0".

-Martin

 [0] http://www.docum.org/stef.coene/qos/kptd/

-- 
Martin A. Brown --- SecurePipe, Inc. --- mabrown@securepipe.com

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RE: [LARTC] virtual interface

[Aron Brand]

>Alen,
>
> : can i add HTB rule on virtual interface?
> : example: eth0:0
>
>First, it's not really a virtual interface--it's just a convention from
the old days of IP aliasing to have names like eth0:0.  
> The IP exists and is active on an interface, eth0 in your case.
> The short answer is "no".  Traffic control occurs just prior to the
release of the packet for transmission by the hardware driver.  See the
KPTD [0].
>
> You can however select packets based on many characteristics, so you
may be able to accomplish what you need.  You'll use characteristics
other than the 
> label "eth0:0".

Hi guys,

I have this problem too. I have two Internet routers connected to the
same Ethernet interface (using a hub). And each one obviously needs to
be shaped seperately. It seems like a very common and logical scenario
and this issue seems like a design problem.
Any Ideas on a workaround? Perhaps IMQ can be used somehow (although I
hear it has serious stability problems...)?

Aron

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Re: [LARTC] virtual interface

[Roy]

There is no need to use imq ant everything is easy to do anyway
interface name is usefull only to attach qdisc to something and that all
you need to clasify packets by source or destination ip antway

if you have idea how to use imq there then just use your interface instead.
also why it is so obvious that they must be shaped separately, ususly it is
much better to shape everything in one einterface


Hi guys,

I have this problem too. I have two Internet routers connected to the
same Ethernet interface (using a hub). And each one obviously needs to
be shaped seperately. It seems like a very common and logical scenario
and this issue seems like a design problem.
Any Ideas on a workaround? Perhaps IMQ can be used somehow (although I
hear it has serious stability problems...)?

Aron


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[LARTC] Virtual Interface

[Roger Singh]

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Hi Guys,

I want to create multiple virtual interfaces on a system running linux 2.6.
The main requirment being, to assign unique MAC address fo each of the
virtual interfaces.

I need to know, if this is possible and will really appriciate if someone
can provide me pointer in this direction.

Thanks a lot.

R. Singh

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[LARTC] Virtual Interface

[Ryan Castellucci]

You can do this with vlans, but this may not be a suitable solution,
as if you want to make them work normaly, you will need to tie this to
a vlan capable switch. I don't belive that alias interfaces support
setting seperate mac addresses, however, you might want to look at
ebtables, it has some mac address rewriting functionality which may
meet your needs.

On 2/2/06, Roger Singh <rogerindia@gmail.com> wrote:
> Hi Guys,
>
> I want to create multiple virtual interfaces on a system running linux 2.6.
> The main requirment being, to assign unique MAC address fo each of the
> virtual interfaces.
>
> I need to know, if this is possible and will really appriciate if someone
> can provide me pointer in this direction.
>
> Thanks a lot.
>
> R. Singh
> _______________________________________________
> LARTC mailing list
> LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
>
>
>


--
Ryan Castellucci http://ryanc.org/


--
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Re: [LARTC] Virtual Interface

[Roger Singh]

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Thanks Ryan.

VLAN will not for for me, I will check ebtables.

BTW, I was thinking more on lines of MAC-VLAN. I could not find much
information about it. I will really appriciate if someone can provide me
some direction one this.

Thanks

R


On 2/2/06, Ryan Castellucci <ryan.castellucci@gmail.com> wrote:
>
> You can do this with vlans, but this may not be a suitable solution,
> as if you want to make them work normaly, you will need to tie this to
> a vlan capable switch. I don't belive that alias interfaces support
> setting seperate mac addresses, however, you might want to look at
> ebtables, it has some mac address rewriting functionality which may
> meet your needs.
>
> On 2/2/06, Roger Singh <rogerindia@gmail.com> wrote:
> > Hi Guys,
> >
> > I want to create multiple virtual interfaces on a system running linux
> 2.6.
> > The main requirment being, to assign unique MAC address fo each of the
> > virtual interfaces.
> >
> > I need to know, if this is possible and will really appriciate if
> someone
> > can provide me pointer in this direction.
> >
> > Thanks a lot.
> >
> > R. Singh
> > _______________________________________________
> > LARTC mailing list
> > LARTC@mailman.ds9a.nl
> > http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
> >
> >
> >
>
>
> --
> Ryan Castellucci http://ryanc.org/
>
>
> --
> Ryan Castellucci http://ryanc.org/
> _______________________________________________
> LARTC mailing list
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> http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
>

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