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Re: [Xen-devel] Networking in Xen

  • To: "Apparao, Padmashree K" <padmashree.k.apparao@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: "Girish V" <girish.xen@xxxxxxxxx>
  • Date: Tue, 6 May 2008 18:42:12 -0400
  • Delivery-date: Tue, 06 May 2008 15:42:36 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
Thaks for the tip. I believe that xenbr0 is used by default - if I
dont specify any option
(http://wiki.xensource.com/xenwiki/XenNetworking#head-602e26cd4a03b992f3938fe1bea03fa0fea0ed8b)

I managed to fix my problem - I was making a mistake in setting the netmask.

Thanks for the help.


On Tue, May 6, 2008 at 3:49 PM, Apparao, Padmashree K
<padmashree.k.apparao@xxxxxxxxx> wrote:
>
>
>  Looks like you are not telling the guest to use the bridge
>
>  vif = [ 'type=ioemu, mac=00:XX:XX:XX:XX:XX, bridge=xenbr0']
>  ipaddr=......
>
>  -Padma
>
>
>
>
>  -----Original Message-----
>  From: Girish V [mailto:girish.xen@xxxxxxxxx]
>  Sent: Tuesday, May 06, 2008 10:55 AM
>  To: Apparao, Padmashree K
>  Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>  Subject: Re: [Xen-devel] Networking in Xen
>
>  brctl from dom0 shows
>  ------------------------------------------------------------------------
>  ---------------------
>  bridge name     bridge id          STP enabled     interfaces
>  xenbr0             8000.feffffffffff     no                    peth0
>
>  vif0.0
>
>  vif2.0
>  ------------------------------------------------------------------------
>  ---------------------
>
>  config file
>  ------------------------------------------------------------------------
>  ---------------------
>  kernel = "/boot/vmlinuz-2.6-xen"
>  memory = 64
>  name = "domu"
>  vif = ['ip=10.10.0.14']
>  disk = [ 'file:/domu.img,hda1,w' ]
>  root = "/dev/hda1"
>  ------------------------------------------------------------------------
>  ---------------------
>
>  Thanks.
>
>
>  On Tue, May 6, 2008 at 12:48 PM, Apparao, Padmashree K
>  <padmashree.k.apparao@xxxxxxxxx> wrote:
>  > Can you send the "brctl show" output and also the config file for the
>  >  domu creation
>  >
>  >  Thanks
>  >  -Padma
>  >
>  >
>  >
>  >
>  >  -----Original Message-----
>  >  From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
>  >  [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Girish V
>  >  Sent: Tuesday, May 06, 2008 8:50 AM
>  >  To: xen-devel@xxxxxxxxxxxxxxxxxxx
>  >  Subject: [Xen-devel] Networking in Xen
>  >
>  >  Hello,
>  >
>  >  I have computer which is not connected to the internet (its eth0 is
>  >  assigned 10.10.0.13 statically and is UP). I am running Xen 3.0.2 on
>  >  it.
>  >
>  >  I want my domU to be able to ping the dom0 and vice versa (I am
>  >  assigning 10.10.0.14 to the domU).
>  >
>  >  I tried a bridged connection, but when I tried to ping 10.10.0.13
>  from
>  >  the domU I get the message "connect: Network is unreachable". When I
>  >  pinged the domU from dom0 I got "Destination Host Unreachable"
>  >
>  >
>  >  What sort of a networking should I set up to achieve this? (I have
>  >  shown ifconfig, route and iptabes below).
>  >
>  >  Any help is appreciated
>  >
>  >  Thanks,
>  >  Girish
>  >
>  >
>  >  my ifconfig from dom0 looks like
>  >  ----------------------------------------------------
>  >  eth0 Link encap:Ethernet HWaddr 10:10:10:10:10:26
>  >   inet addr:10.10.0.13 Bcast:0.0.0.0 Mask:255.255.255.0
>  >   UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>  >   RX packets:26 errors:0 dropped:0 overruns:0 frame:0
>  >   TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
>  >   collisions:0 txqueuelen:0
>  >   RX bytes:2270 (2.2 KiB) TX bytes:1468 (1.4 KiB)
>  >
>  >  lo Link encap:Local Loopback
>  >   inet addr:127.0.0.1 Mask:255.0.0.0
>  >   inet6 addr: ::1/128 Scope:Host
>  >   UP LOOPBACK RUNNING MTU:16436 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 txqueuelen:0
>  >   RX bytes:0 (0.0 KiB) TX bytes:0 (0.0 KiB)
>  >
>  >  peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
>  >   inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>  >   UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>  >   RX packets:15 errors:2 dropped:0 overruns:0 frame:0
>  >   TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
>  >   collisions:0 txqueuelen:1000
>  >   RX bytes:2483 (2.4 KiB) TX bytes:4137 (4.0 KiB)
>  >  Interrupt:10Base address:0x3080
>  >
>  >  vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
>  >   inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>  >   UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>  >   RX packets:12 errors:0 dropped:0 overruns:0 frame:0
>  >   TX packets:31 errors:0 dropped:0 overruns:0 carrier:0
>  >   collisions:0 txqueuelen:0
>  >   RX bytes:1468 (1.4 KiB) TX bytes:2668 (2.6 KiB)
>  >
>  >  vif2.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
>  >   inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>  >   UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>  >   RX packets:15 errors:0 dropped:0 overruns:0 frame:0
>  >   TX packets:1 errors:0 dropped:203 overruns:0 carrier:0
>  >   collisions:0 txqueuelen:0
>  >   RX bytes:846 (846.0 b) TX bytes:42 (42.0 b)
>  >
>  >  xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
>  >   inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
>  >   UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>  >   RX packets:208 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:860 (860.0 b) TX bytes:468 (468.0 b)
>  >  ---------------------------------------------------------------------
>  >  route on dom0 shows
>  >
>  -----------------------------------------------------------------------
>  >  Kernel IP routing table
>  >
>  >  Destination     Gateway         Genmask         Flags Metric Ref
>  Use
>  >  Iface
>  >  10.10.0.0       *               255.255.255.0         U       0
>  >   0        0   eth0
>  >  default           10.10.0.1  0.0.0.0                    UG     0
>  >   0        0   eth0
>  >
>  ------------------------------------------------------------------------
>  >  -
>  >
>  >  iptables -L on dom0 shows
>  >  ---------------------------------------------------------------------
>  >  Chain INPUT (policy ACCEPT)
>  >  target     prot opt source               destination
>  >
>  >  Chain FORWARD (policy ACCEPT)
>  >  target     prot opt source               destination
>  >  ACCEPT  all    --  10.10.0.13          anywhere            PHYSDEV
>  >  match --physdev-in vif2.0
>  >  ACCEPT     udp  --  anywhere             anywhere            PHYSDEV
>  >  match --physdev-in vif2.0 udp spt:bootpc dpt:bootps
>  >
>  >  Chain OUTPUT (policy ACCEPT)
>  >  target     prot opt source               destination
>  >  ---------------------------------------------------------------------
>  >
>  >  ifconfig on domU shows
>  >  ---------------------------------------------------------------------
>  >  eth0      Link encap:Ethernet  HWaddr 00:16:3E:3D:D5:18
>  >          inet addr:10.10.0.14  Bcast:10.10.0..255  Mask:255.255.255.0
>  >          inet6 addr: fe80::216:3eff:fe3d:d518/64 Scope:Link
>  >          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>  >          RX packets:1 errors:0 dropped:0 overruns:0 frame:0
>  >          TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
>  >          collisions:0 txqueuelen:1000
>  >          RX bytes:42 (42.0 b)  TX bytes:846 (846.0 b)
>  >
>  >  lo Link encap:Local Loopback
>  >   inet addr:127.0.0.1 Mask:255.0.0.0
>  >   inet6 addr: ::1/128 Scope:Host
>  >   UP LOOPBACK RUNNING MTU:16436 Metric:1
>  >   RX packets:108 errors:0 dropped:0 overruns:0 frame:0
>  >   TX packets:108 errors:0 dropped:0 overruns:0 carrier:0
>  >   collisions:0 txqueuelen:0
>  >   RX bytes:7884 (7.6 KiB) TX bytes:7884 (7.6 KiB)
>  >  ---------------------------------------------------------------------
>  >
>  >  route on domU shows
>  >
>  -----------------------------------------------------------------------
>  >  Kernel IP routing table
>  >
>  >  Destination     Gateway         Genmask         Flags Metric Ref
>  Use
>  >  Iface
>  >  10.10.10.0       *               255.255.255.0        U      0
>  >  0        0   eth0
>  >  169.254.0.0      *               255.255.0.0           U      0
>  >   0        0   eth0
>  >
>  ------------------------------------------------------------------------
>  >  -
>  >
>  >  _______________________________________________
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>  >  Xen-devel@xxxxxxxxxxxxxxxxxxx
>  >  http://lists.xensource.com/xen-devel
>  >
>

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