Hi OVS experts,
I am new to OVS and trying to replace Linux bridge (brctl) utility with OVS.
Using Linux bridge, I have two VM's based on QEMU/KVM using two tap interfaces
tap0.mxu and tap1.mxu and they are connected thru my bridge mxu-br0:
brctl show mxu-br0
bridge name bridge id STP enabled interfaces
mxu-br0 8000.6a403c9462ff no tap0.mxu
tap1.mxu
My two VM's, mxu-br0, tap0.mxu and tap1.mxu are all on the same Liunx machine
and you can see them all up so I can send ping btw my two VM's without any
problem.
>ifconfig | more
eth0 Link encap:Ethernet HWaddr 30:e4:db:c2:a1:a4
inet addr:172.19.124.54 Bcast:172.19.124.255 Mask:255.255.255.0
inet6 addr: fe80::32e4:dbff:fec2:a1a4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:15000589 errors:0 dropped:870 overruns:0 frame:0
TX packets:7831073 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15172609160 (15.1 GB) TX bytes:2499636852 (2.4 GB)
Memory:b3160000-b3180000
eth1 Link encap:Ethernet HWaddr 30:e4:db:c2:a1:a5
inet addr:21.255.255.253 Bcast:21.255.255.255 Mask:255.0.0.0
inet6 addr: fe80::32e4:dbff:fec2:a1a5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:2611 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:241898 (241.8 KB)
Memory:b3120000-b3140000
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:16436 Metric:1
RX packets:10098544920 errors:0 dropped:0 overruns:0 frame:0
TX packets:10098544920 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:811112857751 (811.1 GB) TX bytes:811112857751 (811.1 GB)
mxu-br0 Link encap:Ethernet HWaddr 6a:40:3c:94:62:ff
inet6 addr: fe80::6840:3cff:fe94:62ff/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:4101 (4.1 KB)
tap0.mxu Link encap:Ethernet HWaddr 6a:40:3c:94:62:ff
inet6 addr: fe80::6840:3cff:fe94:62ff/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:19 errors:0 dropped:0 overruns:0 frame:0
TX packets:47 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:2742 (2.7 KB) TX bytes:8854 (8.8 KB)
tap1.mxu Link encap:Ethernet HWaddr ee:0d:fe:17:53:5d
inet6 addr: fe80::ec0d:feff:fe17:535d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:21 errors:0 dropped:0 overruns:0 frame:0
TX packets:24 errors:0 dropped:1 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:2598 (2.5 KB) TX bytes:4450 (4.4 KB)
Now I use OVS to create bridge mxu-ovs-br1:
>ovs-vsctl show
92076a61-e1bc-4610-997e-22cc173891ab
Bridge "mxu-ovs-br1"
Port "mxu-ovs-br1"
Interface "mxu-ovs-br1"
type: internal
Port "tap1.mxu"
Interface "tap1.mxu"
Port "tap0.mxu"
Interface "tap0.mxu"
I see tap0.mxu and tap1.mxu are up but not bridge mxu-ovs-br1 and it seems that
I could not use ifconfig to bring up mxu-ovs-br1
(not the same as the Linux bridge utility). With OVS as my soft switch, my two
VMs (still the same, identical QEMU/KVM based ) could not ping each other.
Does anybody know whether this is because OVS does not work with tap interface
(created using tunctl utility) or I did not configure everything correctly?
My OVS is built from openvswitch-1.6.1.
> ifconfig | more
eth0 Link encap:Ethernet HWaddr 58:8d:09:08:9a:04
inet addr:172.28.12.88 Bcast:172.28.12.255 Mask:255.255.255.0
inet6 addr: fe80::5a8d:9ff:fe08:9a04/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3512603 errors:0 dropped:1265 overruns:0 frame:0
TX packets:6108402 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:567115246 (567.1 MB) TX bytes:9147031239 (9.1 GB)
Memory:b1960000-b1980000
tap0.mxu Link encap:Ethernet HWaddr 4a:ad:a0:91:81:f9
inet6 addr: fe80::48ad:a0ff:fe91:81f9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:402 errors:0 dropped:0 overruns:0 frame:0
TX packets:62 errors:0 dropped:1 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:81538 (81.5 KB) TX bytes:10343 (10.3 KB)
tap1.mxu Link encap:Ethernet HWaddr ee:dc:21:63:c0:79
inet6 addr: fe80::ecdc:21ff:fe63:c079/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:401 errors:0 dropped:0 overruns:0 frame:0
TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:80879 (80.8 KB) TX bytes:5762 (5.7 KB)
Thanks in advance,
Milton
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