[Xen-users] network-route and vif-route setup help

["Will Wagner" <willw@xxxxxxxxxxxx>]

Hello,

I am trying to configure a hosted machine to run a number fo virtual
machines. The DomU is CentOS 5 with Xen 3.0.

I have to use routed networking as the ISP has set the switch to
disconnect the port if it receives traffic from any other MAC. My
situation is identical to this posting:
http://lists.xensource.com/archives/html/xen-users/2006-03/msg00725.html

I have followed the suggestion in that thread (See this post for what he
got to work:
http://lists.xensource.com/archives/html/xen-users/2006-03/msg00949.html)
and am running the domU with:

vif = [ "ip=domU_IP_HERE,bridge=virbr0" ]
ip = "domU_IP_HERE"
netmask="255.255.255.255"
gateway="10.255.255.1"

The domU is configured with the same IP details and I have run:
ip route add default dev eth0


Having followed all the steps outlined in that mail I can't send/receive
from domU.

The network setup on dom0 is:

#ifconfig
eth0      Link encap:Ethernet  HWaddr 00:19:99:5C:AF:D4  
          inet addr:dom0_IP_HERE  Bcast:dom0_IP_HERE  Mask:255.255.255.255
          inet6 addr: fe80::219:99ff:fe5c:afd4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:163744 errors:0 dropped:0 overruns:0 frame:0
          TX packets:102344 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:154023376 (146.8 MiB)  TX bytes:22900634 (21.8 MiB)
          Interrupt:16 Memory:ddef0000-ddf00000 

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:179245 errors:0 dropped:0 overruns:0 frame:0
          TX packets:179245 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:35306524 (33.6 MiB)  TX bytes:35306524 (33.6 MiB)

tap0      Link encap:Ethernet  HWaddr E6:D2:1D:52:B1:49  
          inet6 addr: fe80::e4d2:1dff:fe52:b149/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:0 (0.0 b)  TX bytes:4126 (4.0 KiB)

vif10.0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          inet addr:dom0_IP_HERE  Bcast:dom0_IP_HERE  Mask:255.255.255.255
          UP BROADCAST 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 txqueuelen:32 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

virbr0    Link encap:Ethernet  HWaddr E6:D2:1D:52:B1:49  
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:32179 errors:0 dropped:0 overruns:0 frame:0
          TX packets:98471 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1727533 (1.6 MiB)  TX bytes:147778233 (140.9 MiB)

#route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.255.255.1    *               255.255.255.255 UH    0      0        0 eth0
dom0_IP_HERE    *               255.255.255.255 UH    0      0        0
vif10.0
192.168.122.0   *               255.255.255.0   U     0      0        0 virbr0
default         10.255.255.1    0.0.0.0         UG    0      0        0 eth0

The network setup on domU is:

#ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:3E:29:C2:D3  
          inet addr:domU_IP_HERE  Bcast:domU_IP_HERE  Mask:255.255.255.255
          UP BROADCAST RUNNING 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 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:32 Base address:0x4000 

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: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:560 (560.0 B)  TX bytes:560 (560.0 B)

#route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         *               0.0.0.0         UH    0      0        0 eth0

Can anyone see where I have gone wrong? Any suggestions on how to proceed
from here?

Thanks,

Will



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