[Xen-users] new xen guest cannot communicate with the network

[sbdcunha <guy20034u@xxxxxxxxx>]

Dear All,

I have a fresh new setup of the below on new cisco UCS Blade server

Centos 6.5 x 64
Xen 4.2.3 

now I did install a new centos 6.5 virtual machine domU and selected the
network as a bridge
the issue I have is the domu can ping the xen server that is domain 0 and
vice versa but from the DOMU machine I cannot reach any other machine

from the Xen server that is Domain 0 there is absolutely no problem. its can
reach any machine in our network


below is the config of the xen domain server

----
[root@xenserver1 log]# ifconfig
br1       Link encap:Ethernet  HWaddr 00:25:B5:10:00:05  
          inet addr:172.16.2.52  Bcast:172.16.2.255  Mask:255.255.255.0
          inet6 addr: fe80::225:b5ff:fe10:5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:16355 errors:0 dropped:88 overruns:0 frame:0
          TX packets:1969 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1178766 (1.1 MiB)  TX bytes:331166 (323.4 KiB)

eth1      Link encap:Ethernet  HWaddr 00:25:B5:10:00:05  
          inet6 addr: fe80::225:b5ff:fe10:5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:16049 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1534 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1481245 (1.4 MiB)  TX bytes:296899 (289.9 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:65536  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:504 (504.0 b)  TX bytes:504 (504.0 b)

vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:340 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14844 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:32 
          RX bytes:52561 (51.3 KiB)  TX bytes:1317477 (1.2 MiB)

virbr0    Link encap:Ethernet  HWaddr 8A:B9:0F:8B:8D:95  
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

----

[root@xenserver1 log]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
default         172.16.2.254    0.0.0.0         UG    0      0        0 br1
link-local      *               255.255.0.0     U     1004   0        0 br1
172.16.2.0      *               255.255.255.0   U     0      0        0 br1
192.168.122.0   *               255.255.255.0   U     0      0        0
virbr0

---

now on the xen dom U 

ip is 172.16.2.53 and gateway is 172.16.2.254
-------

[root@xenserver1 log]# brctl show
bridge name     bridge id               STP enabled     interfaces
br1             8000.0025b5100005       no              eth1
                                                        vif1.0
virbr0          8000.000000000000       yes

------------

what I am missing ..

really appreciate your kind help

regards

simon
 





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