Re: [Xen-devel] veth0 problems and network-route

[wei huang <huanwei@xxxxxxxxxxxxxxxxxx>]

Hi,

I tried xen-2.0 and found that the network works pretty smoothly. It seems
that the veth0 stuff is put into the unstable version recently.

Do you have any back port patch to the version vnet which doesn't use
veth0? It might help in my case. PS: I need to run program with some new
features in unstable, so I have to stick to the unstable versoin.

Thank you very much!

Regards,
Wei Huang


On Thu, 28 Jul 2005, wei huang wrote:

> Hi,
>
> After working on something else for a while, it is the time that I have to
> solve the network problem wrt dom0 and domU.
>
> I posted some emails about this problem before but it got overwhelmed. So
> I re-post it here:
> I am using AS4 linux with broadcom tg3 gigabit ethernet.
>
> 1) I am using the newest code in xen-unstable. Everything works smoothly
> until I call 'xend start'. After that the network traffic just dies. I've
> looked at the ifconfig before and after xend start, every seems normal:
> veth0 gets the ip and mac address from eth0. And eth0's Mac is set to
> fe:ff:ff:ff:ff:ff. xen-br0 is created and vif0.0 and veth0 is attached to
> it. Actually I should say that it is exactly the same sympton as bug 62 in
> your bugzilla. Is that problem solved? Am I miss something?
>
>
> 2) I stuck it there for some while. Then I find there is another path in
> the network script:
> else
>         transfer_addrs ${netdev} ${bridge}
>         transfer_routes ${netdev} ${bridge}
> fi
> I believe this is the old way to setup network in xen-2.0 (are they?).
> Anyway, I try to go through that path and things seem going fine. I can
> start domU and domU even gets its ip address from dhcp. Both domU and dom0
> can connect outside. But domU and dom0 just cannot talk to each other!
> They can ping each other but ssh and socket doesn't work...
> Following is ifconfig of domU (to save space, I only copy the address
> lines):
> eth0      Link encap:Ethernet  HWaddr AA:00:00:00:00:11
>           inet addr:9.2.72.107  Bcast:9.2.72.127  Mask:255.255.255.128
> lo        Link encap:Local Loopback
>           inet addr:1 overr27.0.0.1  Mask:255.0.0.0
> And the dom0:
> eth0      Link encap:Ethernet  HWaddr 00:0D:60:9A:15:60
>           inet addr:9.2.72.112  Bcast:9.2.72.127  Mask:255.255.255.128
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
> vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> xen-br0   Link encap:Ethernet  HWaddr 00:0D:60:9A:15:60
>           inet addr:9.2.72.112  Bcast:9.2.72.127  Mask:255.255.255.128
> And the output of 'netstat -nr' in dom0:
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt  
> Iface
> 9.2.72.0        0.0.0.0         255.255.255.128 U         0 0          0 
> xen-br0
> 169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth0
> 0.0.0.0         9.2.72.1        0.0.0.0         UG        0 0          0 
> xen-br0
>
> Do you have any idea what is happening? And if you need more information
> please suggest me.
>
> Thank you very much!
>
> Regards,
> Wei Huang
>
> 774 Dreese Lab, 2015 Neil Ave,
> Dept. of Computer Science and Engineering
> Ohio State University
> OH 43210
> Tel: (614)292-8501
>
>
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
>


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