Re: [Xen-users] domU network doesn''t get IP

Jayesh Salvi
Tue, 03 Jan 2006 05:38:47 -0000

This things seems to be wrong.
[root@orion hotplug]# brctl showmacs xenbr0
port no mac addr                is local?       ageing timer
  1     00:0b:db:da:d6:42       no                33.21
  2     00:0b:fc:40:1c:54       no                 0.86
  2     00:0b:fc:40:1c:a8       no                 0.03
  1     fe:ff:ff:ff:ff:ff       yes                0.00

My domU''s MAC address is AA:00:00:00:00:11. The bridge doesn''t
know about
domU''s MAC at all. I am looking at the network-bridge script.

Jayesh

On 1/3/06, Jayesh Salvi <jayeshsalvi@gmail.com>
wrote:
>
> >What does "brctl show" return?
> [root@orion hotplug]# brctl show
> bridge name     bridge id               STP enabled     interfaces
> xenbr0          8000.feffffffffff        no              peth0
>                                                         vif0.0
>                                                         vif14.0
>
> >What does xm network-list "ID of domU" return?
> [root@orion hotplug]# xm network-list 14
> (0 ((backend-id 0) (mac aa:00:00:00:00:11) (handle 0) (state 4) (backend
> /local/domain/0/backend/vif/14/0) (tx-ring-ref 521) (rx-ring-ref 522)
> (event-channel 7)))
>
> >Post the ifconfig from your domU and dom0?
> From domU:
> [root@localhost ~]# ifconfig
> eth0      Link encap:Ethernet  HWaddr AA:00:00:00:00:11
>           inet addr:192.168.1.240  Bcast:192.168.1.255   Mask:
> 255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:166249 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:29 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:11139144 (10.6 MiB)  TX bytes:1218 (1.1 KiB)
>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask: 255.0.0.0
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:41 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:3888 (3.7 KiB)  TX bytes:3888 (3.7 KiB)
>
> From dom0:
> [root@orion hotplug]# ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:0B:DB:DA:D6:42
>           inet addr: 24.118.198.46  Bcast:255.255.255.255  Mask:
> 255.255.254.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:1131601 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:45945 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:105704532 (100.8 MiB)  TX bytes:11787028 ( 11.2 MiB)
>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:148 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:148 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:33649 (32.8 KiB)  TX bytes:33649 ( 32.8 KiB)
>
> peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>           UP BROADCAST RUNNING NOARP MULTICAST  MTU:1500  Metric:1
>           RX packets:1131496 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:46049 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:110279930 (105.1 MiB)  TX bytes:12095888 (11.5 MiB)
>           Interrupt:11
>
> vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:45945 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:1131601 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:11787028 (11.2 MiB)  TX bytes:105704532 ( 100.8 MiB)
>
> vif14.0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:29 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:166346 errors:0 dropped:2927 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:1218 (1.1 KiB)  TX bytes:11145961 (10.6 MiB)
>
> xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:1080611 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:55207509 (52.6 MiB)  TX bytes:0 ( 0.0 b)
>
> >What does ping from the domU to its default gateway return?
> ping from domU to its gateway returns "Destination Host
Unreachable"
>
>
> >If you are routing through the dom0 does it have forwarding enabled?
> I think forwarding is not relevant in my case, because I am using
> bridging. Isn''t that right?
>
> Thanks,
> Jayesh
>
> On 1/3/06, Jayesh Salvi <jayeshsalvi@gmail.com> wrote:
> >
> > > If you are routing through the dom0 does it have forwarding
enabled?
> > This is interesting and something I don''t know. How do I
check the
> > forwarding?
> >
> > I will provide answer to your other questions when I get home.
> > Thanks,
> > Jayesh
> >
> > On 1/2/06, Ted Kaczmarek < tedkaz@optonline.net> wrote:
> > >
> > > On Tue, 2006-01-03 at 16:02 +0000, Jayesh Salvi wrote:
> > > > Thanks to your sample file, I got a little success.
> > > >
> > > > I used those values in my ifcfg-eth0, and one first reboot
it did
> > > not
> > > > work. Then I changed IP address to something else and halted
domU,
> > > > started again and it gave error even before:
> > > > Bringing up interface eth0:  RTNETLINK answers: Network is
> > > unreachable
> > > > [  OK  ]
> > >
> > > What does "brctl show" return?
> > >
> > > What does xm network-list "ID of domU" return?
> > >
> > > Post the ifconfig from your domU and dom0?
> > >
> > > What does ping from the domU to its default gateway return?
> > >
> > > If you are routing through the dom0 does it have forwarding
enabled?
> > >
> > > Also is you don''t top post it may get you better return
on your smtp
> > > packets.
> > >
> > > Regards,
> > > Ted
> > >
> > >
> > >
> > >
> >
> >
> > --
> > Jayesh
> >
> >
>
>
> --
> Jayesh