[Xen-users] Re: Bridging on the blink with greater than 2 xen domains

[NewXenUser <newxenuser@xxxxxxxxx>]

Ok.  I restarted all three domains (mail, wiki, pbx) and for about 15
minutes the bridge networking worked.  Then it dropped back to just
two working.  From the failed domain, I can still ping Dom0, I just
can't ping outside Dom0!

Any suggestions?
Thanks


On 10/24/07, NewXenUser <newxenuser@xxxxxxxxx> wrote:
> Hi,
>
> My bridging stops when I start a third Xen domain !?!?
>
> I have a few domains  setup (mail, wiki, pbx).  If I start two domains
> bridge networking works great.  But if I start a third, either the new
> domains does not work or one of the other DomUs stops working!  By
> stop working I mean I can't route traffic outside of Dom0.  I have
> been looking at this on and off for a couple of weeks.  Any insight or
> things I should look at would be greatly appreciated.
>
> I don't want to bombard this email with 10,000 dumps.  I will gladly
> post any information needed to figure this one out.
>
> Basic network is a 10.20.10.X network.
> Gateway is 10.20.10.1
>
> Xen Dom0 IP is 10.20.10.125
> Xen Mail domain is 10.20.10.150
> Xen PBX domain is 10.20.10.152
> Xen wiki domain is 10.20.10.153
>
> [root@abc ~]# rpm -qa | grep xen
> kernel-xen-2.6.20-2925.13.fc7
> kernel-xen-2.6.20-2936.fc7
> xen-libs-3.1.0-6.fc7
> xen-3.1.0-6.fc7
>
> *************** Below.... 2 work fine *******************
>
> [root@abc ~]# for i in wiki mail; do echo "# $i"; ssh $i arp; ssh $i
> "ping -c 4 4.2.2.2"; done
> # wiki
> Address                  HWtype  HWaddress           Flags Mask            
> Iface
> 10.20.10.125             ether   00:19:B9:D7:FB:4B   C                     
> eth0
> 10.20.10.199             ether   00:07:E9:82:60:33   C                     
> eth0
> PING 4.2.2.2 (4.2.2.2) 56(84) bytes of data.
> From 10.20.10.125: icmp_seq=1 Redirect Host(New nexthop: 10.20.10.1)
> 64 bytes from 4.2.2.2: icmp_seq=1 ttl=56 time=37.1 ms
> From 10.20.10.125: icmp_seq=2 Redirect Host(New nexthop: 10.20.10.1)
> 64 bytes from 4.2.2.2: icmp_seq=2 ttl=56 time=32.3 ms
> 64 bytes from 4.2.2.2: icmp_seq=3 ttl=56 time=30.8 ms
> 64 bytes from 4.2.2.2: icmp_seq=4 ttl=56 time=29.9 ms
>
> --- 4.2.2.2 ping statistics ---
> 4 packets transmitted, 4 received, 0% packet loss, time 3000ms
> rtt min/avg/max/mdev = 29.954/32.570/37.142/2.781 ms
> # mail
> Address                  HWtype  HWaddress           Flags Mask            
> Iface
> 10.20.10.125             ether   00:19:B9:D7:FB:4B   C                     
> eth0
> 10.20.10.1               ether   00:14:1C:5D:B6:BB   C                     
> eth0
> PING 4.2.2.2 (4.2.2.2) 56(84) bytes of data.
> From 10.20.10.125: icmp_seq=1 Redirect Host(New nexthop: 10.20.10.1)
> 64 bytes from 4.2.2.2: icmp_seq=1 ttl=56 time=38.1 ms
> 64 bytes from 4.2.2.2: icmp_seq=2 ttl=56 time=27.1 ms
> 64 bytes from 4.2.2.2: icmp_seq=3 ttl=56 time=31.3 ms
> 64 bytes from 4.2.2.2: icmp_seq=4 ttl=56 time=28.8 ms
>
> --- 4.2.2.2 ping statistics ---
> 4 packets transmitted, 4 received, 0% packet loss, time 3009ms
> rtt min/avg/max/mdev = 27.144/31.359/38.120/4.180 ms
> [root@abc ~]#
>
> ***************** Here we start the third xen domain, "pbx"  ************
>
> [root@abc ~]# xm start pbx
> [root@abc ~]#
>
>
> *****************  Initially WIKI works and PBX does not work *********
> *****************  WAIT 5 MINUTES AND THE PBX WORKS, WIKI DOES NOT *******
>
>
> [root@abc~]# for i in wiki mail pbx; do echo "# $i"; ssh $i arp; ssh
> $i "ping -c 4 4.2.2.2"; done
> # wiki
> Address                  HWtype  HWaddress           Flags Mask            
> Iface
> 10.20.10.125             ether   00:19:B9:D7:FB:4B   C                     
> eth0
> 10.20.10.1               ether   00:14:1C:5D:B6:BB   C                     
> eth0
> PING 4.2.2.2 (4.2.2.2) 56(84) bytes of data.
>
> --- 4.2.2.2 ping statistics ---
> 4 packets transmitted, 0 received, 100% packet loss, time 3008ms
>
> # mail
> Address                  HWtype  HWaddress           Flags Mask            
> Iface
> 10.20.10.125             ether   00:19:B9:D7:FB:4B   C                     
> eth0
> 10.20.10.1               ether   00:14:1C:5D:B6:BB   C                     
> eth0
> PING 4.2.2.2 (4.2.2.2) 56(84) bytes of data.
> From 10.20.10.125: icmp_seq=1 Redirect Host(New nexthop: 10.20.10.1)
> 64 bytes from 4.2.2.2: icmp_seq=1 ttl=56 time=28.8 ms
> 64 bytes from 4.2.2.2: icmp_seq=2 ttl=56 time=30.3 ms
> 64 bytes from 4.2.2.2: icmp_seq=3 ttl=56 time=26.8 ms
> 64 bytes from 4.2.2.2: icmp_seq=4 ttl=56 time=26.7 ms
>
> --- 4.2.2.2 ping statistics ---
> 4 packets transmitted, 4 received, 0% packet loss, time 2997ms
> rtt min/avg/max/mdev = 26.794/28.220/30.383/1.513 ms
> # pbx
> Address                  HWtype  HWaddress           Flags Mask            
> Iface
> 10.20.10.1               ether   00:14:1C:5D:B6:BB   C                     
> eth0
> 10.20.10.125             ether   00:19:B9:D7:FB:4B   C                     
> eth0
> PING 4.2.2.2 (4.2.2.2) 56(84) bytes of data.
> From 10.20.10.125: icmp_seq=1 Redirect Host(New nexthop: 10.20.10.1)
> 64 bytes from 4.2.2.2: icmp_seq=1 ttl=56 time=29.5 ms
> 64 bytes from 4.2.2.2: icmp_seq=2 ttl=56 time=27.9 ms
> 64 bytes from 4.2.2.2: icmp_seq=3 ttl=56 time=28.5 ms
> 64 bytes from 4.2.2.2: icmp_seq=4 ttl=56 time=33.1 ms
>
> --- 4.2.2.2 ping statistics ---
> 4 packets transmitted, 4 received, 0% packet loss, time 3002ms
> rtt min/avg/max/mdev = 27.900/29.783/33.102/2.006 ms
> [root@abc123~]#
>
> *********************************************
>
> Thanks
>

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