Re: [Xen-users] Dom0 seeing traffic on br0 but it's not routing

["Glenn E. Bailey III" <replicant@xxxxxxxxxxxxxxxx>]

Sorry,

The DomU wasn't running when I did the brctl:

xen-den:~ # brctl show
bridge name    bridge id        STP enabled    interfaces
br0        8000.0025b50002fb    no        eth0
                            vif1.0
                            vif1.0-emu




On Fri, Nov 22, 2013 at 11:31 AM, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
> On Fri, Nov 22, 2013 at 11:18:01AM -0600, Glenn E. Bailey III wrote:
>> Hello,
>>
>> I've beaten my head against the wall on trying to get bridging working
>> on a new dom0 install. I initially went  with CentOS 6 w/Xen 4.2 but
>> figured that the xl toolkit not being fully supported was the issue so
>> I went with SLES 11.3 and I'm having the same issue.
>>
>> The issue is that appears to be that bridging isn't fully working as
>> the DomU can't ping anything *other* than the Dom0. When I do a
>> tcpdump on the DomU I can see the correct arp traffic that the Dom0
>> should be seeing, but I can't ping the gw on that network, again only
>> the Dom0 ip. Also, when I do a tcpdump on the Dom0 I can see the DomU
>> sending arp request trying to find the gw I'm trying to ping.
>>
>> Some basic config info:
>>
>> xen-den:~ # brctl show
>> bridge name    bridge id        STP enabled    interfaces
>> br0        8000.0025b50002fb    no        eth0
>>
>
> You vif doesn't seem to be on br0? Try brctl addif?
>
> If that works, then you probably need to look at hotplug scripts and
> figure out why it doesn't work.
>
> Wei.
>
>> xen-den:~ # ifconfig # only br0 and eth0
>> br0       Link encap:Ethernet  HWaddr 00:25:B5:00:02:FB
>>           inet addr:10.157.209.8  Bcast:10.157.209.255  Mask:255.255.254.0
>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>           RX packets:30071 errors:0 dropped:321 overruns:0 frame:0
>>           TX packets:3250 errors:0 dropped:0 overruns:0 carrier:0
>>           collisions:0 txqueuelen:0
>>           RX bytes:1634697 (1.5 Mb)  TX bytes:18920997 (18.0 Mb)
>>
>> eth0      Link encap:Ethernet  HWaddr 00:25:B5:00:02:FB
>>           UP BROADCAST RUNNING MULTICAST  MTU:9000  Metric:1
>>           RX packets:30050 errors:0 dropped:0 overruns:0 frame:0
>>           TX packets:15647 errors:0 dropped:0 overruns:0 carrier:0
>>           collisions:0 txqueuelen:1000
>>           RX bytes:2301897 (2.1 Mb)  TX bytes:19801909 (18.8 Mb)
>>
>>
>> xen-den:~ # route
>> Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
>> default         10.157.208.1    0.0.0.0         UG    0      0        0 br0
>> 10.157.208.0    *               255.255.254.0   U     0      0        0 br0
>> loopback        *               255.0.0.0       U     0      0        0 lo
>>
>> xen-den:~ # grep vif /etc/xen/centos.cfg
>> vif=["bridge=br0,model=e1000"]
>>
>> Any ideas?
>>
>> --
>> I've seen things you people wouldn't believe. Attack ships on fire off
>> the shoulder of Orion. I watched C-beams glitter in the dark near the
>> Tannhauser gate. All those moments will be lost in time... like tears
>> in rain... Time to die.
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxx
>> http://lists.xen.org/xen-users



-- 
I've seen things you people wouldn't believe. Attack ships on fire off
the shoulder of Orion. I watched C-beams glitter in the dark near the
Tannhauser gate. All those moments will be lost in time... like tears
in rain... Time to die.

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