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Re: [Xen-users] SuSE 10 no network in dom0 - arp problem?

from [Stephan Böni] [Permanent Link][Original]
To: "Richard Wackerbarth" <richard@xxxxxxxxxx>, "Robert Welz" <r_welz@xxxxxx>
Subject: Re: [Xen-users] SuSE 10 no network in dom0 - arp problem?
From: Stephan Böni <boeni@xxxxxx>
Date: Mon, 17 Oct 2005 18:45:28 +0200
Cc: Xen-users@xxxxxxxxxxxxxxxxxxx, Arnd Schmitter <arnd_xen@xxxxxxxx>
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Thread-topic: AW: [Xen-users] SuSE 10 no network in dom0 - arp problem? 
Perhaps you should have a look on: 
http://www.suse.de/~garloff/linux/xen/RPMs-100/

There is a newer Xen3 build for SUSE 10.0. It should solve your netwerk 
problems.

Stephan


> -----Ursprüngliche Nachricht-----
> Von: Richard Wackerbarth [mailto:richard@xxxxxxxxxx]
> Gesendet: Montag, 17. Oktober 2005 16:00
> An: Robert Welz
> Cc: Xen-users@xxxxxxxxxxxxxxxxxxx; Arnd Schmitter
> Betreff: Re: AW: [Xen-users] SuSE 10 no network in dom0 - arp problem?
> 
> 
> 
> On Oct 17, 2005, at 8:33 AM, Robert Welz wrote:
> 
> > brctl show
> > bridge name               bridge id                     STP  
> > enabled          interfaces
> > xenbr0                         8000.feffffffffff              
> > no                             vif0.0
> >                                                             
>            
> >                                      peth0
> >
> > shouldn't xenbr0 be bound to eth0?
> >
> > Robert
> 
> Robert,
> I'll jump in here because I've had similar problems and, by  
> explaining my reasoning, I will hopefully be corrected if I am wrong.
> 
> I believe that the answer is "NO".
> Given the recent (on the Unix timeline) ability to rename devices,  
> you should look at the overall dom-net architecture rather than the  
> names.
> 
> peth0 is the (renamed) physical I/O device and it is bound to the  
> virtual "hub" xenbr0.
> We also attach to that bridge one xen net device "vifX.0" where X is  
> the domain number.
> The other end of that xen net device is called "eth0" in each of the  
> respective domains.
> 
> dom0 is handled just like the various domU. An application sends a  
> packet via "eth0". Xen causes that packet to appear on vif0.0 which  
> is bound to xenbr0. Therefore the packet is replicated on peth0 and  
> appears on the actual wire.
> 
> As I see it, the arp difficulty is a result of the fct that 
> they have  
> "moved" the real MAC address from peth0 to eth0. I think that 
> the xen  
> net device acts as a ppp cross-connect and does not pass arp 
> since it  
> doesn't need arp to establish routing since there is just one device  
> on the other end of the (virtual) wire.
> 
> Richard
> 
> >
> >
> > Am 17.10.2005 um 14:20 schrieb Arnd Schmitter:
> >
> >
> >> Are you using the default network script shipped with xen ?
> >>
> >> What's the configuration of your network bridge ? What say brctl ?
> >>
> >>
> >>
> >>
> >>> -----Ursprüngliche Nachricht-----
> >>> Von: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-
> >>> bounces@xxxxxxxxxxxxxxxxxxx] Im Auftrag von Robert Welz
> >>> Gesendet: Montag, 17. Oktober 2005 14:13
> >>> An: Stephan Böni
> >>> Cc: Xen-users@xxxxxxxxxxxxxxxxxxx
> >>> Betreff: Re: [Xen-users] SuSE 10 no network in dom0 - arp problem?
> >>>
> >>> Hello.
> >>> That didn't help.
> >>>
> >>> I see the same arp broadcast storms as before.
> >>>
> >>> Robert
> >>>
> >>>
> >>> Am 17.10.2005 um 13:58 schrieb Stephan Böni:
> >>>
> >>>
> >>>
> >>>> Try  'export LC_MESSAGES=POSIX'  before starting xend. The Xen  
> >>>> network
> >>>> script has problems parsing your ifconfig because its german.
> >>>>
> >>>> Stephan
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>> -----Ursprüngliche Nachricht-----
> >>>>> Von: Robert Welz [mailto:r_welz@xxxxxx]
> >>>>> Gesendet: Montag, 17. Oktober 2005 13:45
> >>>>> An: Stephan Böni
> >>>>> Cc: Xen-users@xxxxxxxxxxxxxxxxxxx
> >>>>> Betreff: Re: [Xen-users] SuSE 10 no network in dom0 - 
> arp problem?
> >>>>>
> >>>>>
> >>>>> Here it is:
> >>>>>
> >>>>>
> >>>>> eth0      Protokoll:Ethernet  Hardware Adresse 00:0E:0C:72:41:41
> >>>>>            inet Adresse:192.168.2.128  
> Bcast:192.168.2.255  Maske:
> >>>>> 255.255.255.0
> >>>>>            inet6 Adresse: fe80::20e:cff:fe72:4141/64
> >>>>> Gültigkeitsbereich:Verbindung
> >>>>>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >>>>>            RX packets:7 errors:0 dropped:0 overruns:0 frame:0
> >>>>>            TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
> >>>>>            collisions:0 Sendewarteschlangenlänge:0
> >>>>>            RX bytes:498 (498.0 b)  TX bytes:2064 (2.0 Kb)
> >>>>>
> >>>>> lo        Protokoll:Lokale Schleife
> >>>>>            inet Adresse:127.0.0.1  Maske:255.0.0.0
> >>>>>            inet6 Adresse: ::1/128 Gültigkeitsbereich:Maschine
> >>>>>            UP LOOPBACK RUNNING  MTU:16436  Metric:1
> >>>>>            RX packets:107 errors:0 dropped:0 overruns:0 frame:0
> >>>>>            TX packets:107 errors:0 dropped:0 overruns:0 
> carrier:0
> >>>>>            collisions:0 Sendewarteschlangenlänge:0
> >>>>>            RX bytes:8414 (8.2 Kb)  TX bytes:8414 (8.2 Kb)
> >>>>>
> >>>>> peth0     Protokoll:Ethernet  Hardware Adresse FE:FF:FF:FF:FF:FF
> >>>>>            inet6 Adresse: fe80::fcff:ffff:feff:ffff/64
> >>>>> Gültigkeitsbereich:Verbindung
> >>>>>            UP BROADCAST NOARP MULTICAST  MTU:1500  Metric:1
> >>>>>            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> >>>>>            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> >>>>>            collisions:0 Sendewarteschlangenlänge:1000
> >>>>>            RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
> >>>>>            Basisadresse:0x9000 Speicher:d6800000-d6820000
> >>>>>
> >>>>> vif0.0    Protokoll:Ethernet  Hardware Adresse FE:FF:FF:FF:FF:FF
> >>>>>            inet6 Adresse: fe80::fcff:ffff:feff:ffff/64
> >>>>> Gültigkeitsbereich:Verbindung
> >>>>>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >>>>>            RX packets:28 errors:0 dropped:0 overruns:0 frame:0
> >>>>>            TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
> >>>>>            collisions:0 Sendewarteschlangenlänge:0
> >>>>>            RX bytes:2064 (2.0 Kb)  TX bytes:588 (588.0 b)
> >>>>>
> >>>>> xenbr0    Protokoll:Ethernet  Hardware Adresse FE:FF:FF:FF:FF:FF
> >>>>>            inet6 Adresse: fe80::200:ff:fe00:0/64
> >>>>> Gültigkeitsbereich:Verbindung
> >>>>>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >>>>>            RX packets:27 errors:0 dropped:0 overruns:0 frame:0
> >>>>>            TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
> >>>>>            collisions:0 Sendewarteschlangenlänge:0
> >>>>>            RX bytes:1596 (1.5 Kb)  TX bytes:378 (378.0 b)
> >>>>>
> >>>>>
> >>>>> Am 17.10.2005 um 13:16 schrieb Stephan Böni:
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>> Please mail me your "ifconfig" output.
> >>>>>>
> >>>>>> Stephan
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>> -----Ursprüngliche Nachricht-----
> >>>>>>> Von: Robert Welz [mailto:r_welz@xxxxxx]
> >>>>>>> Gesendet: Montag, 17. Oktober 2005 12:10
> >>>>>>> An: Xen-users@xxxxxxxxxxxxxxxxxxx
> >>>>>>> Betreff: [Xen-users] SuSE 10 no network in dom0 - arp problem?
> >>>>>>>
> >>>>>>>
> >>>>>>> Hello.
> >>>>>>> I have installed the SuSE Linux 10 XEN kernel but no domU
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>> yet. Now I
> >>>>>
> >>>>>
> >>>>>
> >>>>>>> cannot ping to and from dom0. I get lots of ARP broadcasts
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>> from dom0
> >>>>>
> >>>>>
> >>>>>
> >>>>>>> but dom0 seems to ignore ARP answers. When pinging to dom0 it
> >>>>>>> ignores
> >>>>>>> arp requests. This happens regardless xend is running 
> or not.  
> >>>>>>> This
> >>>>>>> happens in the xen kernel only, when booting stock 
> kernel all  
> >>>>>>> works
> >>>>>>> as expected.
> >>>>>>>
> >>>>>>> What can I do?
> >>>>>>>
> >>>>>>> Robert
> >>>>>>>
> >>>>>>> _______________________________________________
> >>>>>>> Xen-users mailing list
> >>>>>>> Xen-users@xxxxxxxxxxxxxxxxxxx
> >>>>>>> http://lists.xensource.com/xen-users
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> Xen-users mailing list
> >>>>>> Xen-users@xxxxxxxxxxxxxxxxxxx
> >>>>>> http://lists.xensource.com/xen-users
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>> _______________________________________________
> >>> Xen-users mailing list
> >>> Xen-users@xxxxxxxxxxxxxxxxxxx
> >>> http://lists.xensource.com/xen-users
> >>>
> >>>
> >>> --
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> >>> Checked by AVG Anti-Virus.
> >>> Version: 7.0.344 / Virus Database: 267.12.1/136 - Release Date:  
> >>> 15.10.2005
> >>>
> >>>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
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> >>
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> >>
> >>
> >
> >
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