Re: [Xen-users] VLAN configuration

[Laurent Jouannic <laurent.jouannic@xxxxxxx>]

Hi Marc, and thanks a lot.

It's better now, but still strange:

/etc/xen/scripts/vlan-network-bridge start
start
Set name-type for VLAN subsystem. Should be visible in /proc/net/vlan/config
Added VLAN with VID == 2 to IF -:eth0:-
Added VLAN with VID == 2 to IF -:eth1:-
ifdown: interface eth0 not configured
SIOCSIFNAME: Device or resource busy                                  
                   <=============  STRANGE
ifdown: interface eth0.2 not configured                                  
                           <=============  STRANGE
Nothing to flush.
Nothing to flush.
Waiting for peth0.2 to negotiate link.Ignoring unknown interface 
eth0.2=eth0.2.   <=============  STRANGE
Nothing to flush.
Waiting for peth1 to negotiate link.
Link veth1 is missing.                                                   
                                       <=============  STRANGE
This may be because you have reached the limit of the number of interfaces
that the loopback driver supports.  If the loopback driver is a module, you
may raise this limit by passing it as a parameter (nloopbacks=<N>); if the
driver is compiled statically into the kernel, then you may set the 
parameter
using loopback.nloopbacks=<N> on the domain 0 kernel command line.

Apparently, il seems to deal with: loopback
But I put:  loop max_loop=64 in /etc/modules

Does I have to include loopback.nloopbacks in my grub.conf
like:

title           Xen 3.0.3-1-i386-pae / Debian GNU/Linux, kernel 
2.6.18-4-xen-686
root            (hd0,0)
kernel          /xen-3.0.3-1-i386-pae.gz dom0_mem=200000 
loopback.nloopbacks=64
module          /vmlinuz-2.6.18-4-xen-686 root=/dev/md2 ro console=tty0
module          /initrd.img-2.6.18-4-xen-686
savedefault

I don't know howmuch nloopback I have to put,
is 64 ok ?

It's dangerous to deal with kernel stuff, the machine is not in the same 
area....
Thanks. Laurent.





Marc Patino Gómez a écrit :
> Hi Laurent,
>
> has you load the vlan kernel module?
>
> # lsmod | grep 8021q
>
> if not :
>
> # modprobe 8021q
>
> I hope it will help you.
>
> Marc
>
> Laurent Jouannic wrote:
> > Hi to the ML.
> >
> > I'm new to VLAN configuration, and combining it to XEN is a bit 
> > difficult.
> > I want to use VLAN because it's possible to "arping" from a domU to 
> > an other, and VLAN looks like; the only solution to prevent that.
> > May be I'm wrong if someone got a solution, I may be interrested. 
> > I've also tryed ebtables, but nothing to prevent arp question: who-as 
> > IP¨.
> > The configuration I need is:
> >  -------------
> >  |   domU      |
> > -| -[ dom1 ]-  |-
> > | -[ dom2 ]-  |
> >  -------------
> >
> > I want dom1 and dom2 to use eth0 and eth1, with vlan interface.
> >
> > I've tryed 
> > http://lists.xensource.com/archives/html/xen-users/2007-03/msg00988.html 
> > configuration, but I have the following error:
> > WARNING:  Could not open /proc/net/vlan/config.  Maybe you need to 
> > load the 8021q module, or maybe you are not using PROCFS??
> > Set name-type for VLAN subsystem. Should be visible in 
> > /proc/net/vlan/config
> > ERROR: trying to add VLAN #2 to IF -:eth0:-  error: Invalid argument
> > ERROR: trying to add VLAN #3 to IF -:eth0:-  error: Invalid argument
> >
> > The machine run on Debian Etch and the vlan package is intalled.
> >
> > If you have some ideas, I'm stuck!!!
> > Thanks.
> >
> >
> > Laurent.
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
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