Hi,
I have gotten the default route by running dhclient s1.
Let me describe my operations.
1. Log in the VirtualBox VM, which has two Ethernet interfaces: eth0 (NAT,
ip:10.0.2.15) for accessing the Internet and eth0 (host only, ip:
192.168.56.101) for ssh VM via putty
2. Then run " sudo mn --topo single --mac --switch ovsk --controller
remote" to start openvswitch.
3. root@mininet-vm:~# ovs-vsctl add-port s1 eth0
4. root@mininet-vm:~# ifconfig eth0 0.0.0.0
5. root@mininet-vm:~# ifconfig s1 10.0.2.15
6. root@mininet-vm:~# ifconfig eth0 up
7. root@mininet-vm:~# ifconfig s1 up
8. root@mininet-vm:~# dhclient s1
The interfaces are follows:
root@mininet-vm:~# ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:cd:98:cc
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:434 errors:0 dropped:0 overruns:0 frame:0
TX packets:453 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:39166 (39.1 KB) TX bytes:37682 (37.6 KB)
eth1 Link encap:Ethernet HWaddr 08:00:27:62:c7:30
inet addr:192.168.56.101 Bcast:192.168.56.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1764 errors:0 dropped:0 overruns:0 frame:0
TX packets:1357 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:195772 (195.7 KB) TX bytes:220854 (220.8 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:4237 errors:0 dropped:0 overruns:0 frame:0
TX packets:4237 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:214466 (214.4 KB) TX bytes:214466 (214.4 KB)
s1 Link encap:Ethernet HWaddr 08:00:27:cd:98:cc
inet addr:10.0.2.15 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:15 errors:0 dropped:0 overruns:0 frame:0
TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1430 (1.4 KB) TX bytes:888 (888.0 B)
s1-eth1 Link encap:Ethernet HWaddr b2:50:5d:d8:d7:f2
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:1000
RX bytes:0 (0.0 B) TX bytes:1104 (1.1 KB)
s1-eth2 Link encap:Ethernet HWaddr 72:24:5e:ac:b6:eb
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:1000
RX bytes:0 (0.0 B) TX bytes:1104 (1.1 KB)
Route is as follows:
root@mininet-vm:~# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
default 10.0.2.2 0.0.0.0 UG 0 0 0 s1
10.0.0.0 * 255.0.0.0 U 0 0 0 s1
10.0.2.0 * 255.255.255.0 U 0 0 0 s1
192.168.56.0 * 255.255.255.0 U 0 0 0 eth1
And ports of openvswitch are as follows:
root@mininet-vm:~# ovs-vsctl show
d27a9060-3edf-4ee7-a4cf-09e705c93f56
Bridge "s1"
Controller "ptcp:6634"
Controller "tcp:127.0.0.1:6633"
fail_mode: secure
Port "eth0"
Interface "eth0"
Port "s1"
Interface "s1"
type: internal
Port "s1-eth2"
Interface "s1-eth2"
Port "s1-eth1"
Interface "s1-eth1"
ovs_version: "2.0.1"
I want to access the Internet from the openvswtich.
However, neither of openvswitch and VM can not access the Internet (like
ping www.google.com).
Could you help me check my fault? Thank you very much.
Best Regards,
Bruce
On Thu, Jul 31, 2014 at 4:23 PM, Ben Pfaff <b...@nicira.com> wrote:
> On Thu, Jul 31, 2014 at 02:11:54PM +0100, Bruce SUN wrote:
> > I run an Openvswith and a controller on the VM. The switch has two ports
> > connecting two virtual hosts. Eth0 of VM is an interface which can access
> > the Internet.
> > I am going to add eth0 (interface to internet) into the openvswitch and
> > expect that one virtual host can access the internet as follows:
> >
> > ovs-vsctl add-port s1 eth0
> >
> > Howerver, after adding eth0 into to the openvswitch, both VM and
> openvsiwth
> > can not access the Internet.
> >
> > As s physical Ethernet device that is part of an Open vSwitch bridge
> should
> > not have an IP address.
> > I try to fix the like this
> >
> > ifconfig eth0 0.0.0.0
> > ifconfig s1 10.0.2.15
> >
> > But it still does't work.
> >
> > Could you tell me how to access the Internet via OVS network?
>
> You probably need to add a default route.
>
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