Hi,
I new to OpenVSwitch. I have removed the libvirt bridge virbr0.
I installed it from git and then start it using
# ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock
--remote=db:Open_vSwitch,manager_options --pidfile --detach
# ovs-vsctl --no-wait init
# ovs-vswitchd --pidfile --detach
then I configured the bridge:
# ovs-vsctl add-br br0
# ovs-vsctl add-port br0 em1
# ifconfig em1 0.0.0.0
# ifconfig br0 <ip> netmask <mask>
# ip route del default dev em1
# ip route add default dev br0
# ovs-vsctl show
667ae087-8a68-47e3-ba17-406fc2df42bc
Bridge "br0"
Port "br0"
Interface "br0"
type: internal
Port "em1"
Interface "em1"
then I created ifup-br0 and ifdown-br0 as documentated.
When I start up a guest sytem as
# qemu-kvm vdisk.img -m 3072 -net nic,macaddr=00:11:22:EE:EE:EE -net
tap,script=ifup-br0,downscript=ifdown-br0
I can see the tap device
# ovs-vsctl show
667ae087-8a68-47e3-ba17-406fc2df42bc
Bridge "br0"
Port "br0"
Interface "br0"
type: internal
Port "tap0"
Interface "tap0"
Port "em1"
Interface "em1"
# ifconfig -a
br0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500
inet ++.++.++.++ netmask 255.255.240.0 broadcast ++.++.++.++
inet6 fe80::1ec1:deff:fe65:6fee prefixlen 64 scopeid 0x20<link>
ether 1c:c1:de:65:6f:ee txqueuelen 0 (Ethernet)
RX packets 286290 bytes 54385389 (51.8 MiB)
RX errors 0 dropped 284 overruns 0 frame 0
TX packets 20230 bytes 3545570 (3.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
em1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::1ec1:deff:fe65:6fee prefixlen 64 scopeid 0x20<link>
ether 1c:c1:de:65:6f:ee txqueuelen 1000 (Ethernet)
RX packets 307970 bytes 58277898 (55.5 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 21322 bytes 3835886 (3.6 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 19 memory 0xf3000000-f3020000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 16436
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 12 bytes 1090 (1.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12 bytes 1090 (1.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::78c9:85ff:fe1f:3e27 prefixlen 64 scopeid 0x20<link>
ether 7a:c9:85:1f:3e:27 txqueuelen 500 (Ethernet)
RX packets 5 bytes 670 (670.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 624 bytes 75288 (73.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
and inside the guest:
# ovs-vsctl show
667ae087-8a68-47e3-ba17-406fc2df42bc
Bridge "br0"
Port "br0"
Interface "br0"
type: internal
Port "tap0"
Interface "tap0"
Port "em1"
Interface "em1"
[root@aopcach arindam]# ifconfig -a
br0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500
inet 158.109.65.21 netmask 255.255.240.0 broadcast 158.109.79.255
inet6 fe80::1ec1:deff:fe65:6fee prefixlen 64 scopeid 0x20<link>
ether 1c:c1:de:65:6f:ee txqueuelen 0 (Ethernet)
RX packets 286290 bytes 54385389 (51.8 MiB)
RX errors 0 dropped 284 overruns 0 frame 0
TX packets 20230 bytes 3545570 (3.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
em1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::1ec1:deff:fe65:6fee prefixlen 64 scopeid 0x20<link>
ether 1c:c1:de:65:6f:ee txqueuelen 1000 (Ethernet)
RX packets 307970 bytes 58277898 (55.5 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 21322 bytes 3835886 (3.6 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 19 memory 0xf3000000-f3020000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 16436
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 12 bytes 1090 (1.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12 bytes 1090 (1.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::78c9:85ff:fe1f:3e27 prefixlen 64 scopeid 0x20<link>
ether 7a:c9:85:1f:3e:27 txqueuelen 500 (Ethernet)
RX packets 5 bytes 670 (670.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 624 bytes 75288 (73.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
But the tap device or the guest do not have any ip address. How to assign
the ip addresses?
Thanks,
Arindam
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