I am new to OpenvSwitch. I create two OVS bridges as below config, one in 10.32.0.0/24 (br0) subnet and the other in 10.32.10.0/24 (br1) subnet. I able to ping the default gateway of br0 or br1 from the host. If I create a guest VM on br1, everything work fine and guest able to ping get DHCP add and ping default gateway. However, if I create a guest VM on br0, it's not able to access the br0 ip or default gateway. Any idea why? Am I missing any config?
Code:
root@uCPE:/var/lib/libvirt/guest_images# ovs-vsctl show
ca93f2c5-dd68-492d-a634-b77d57fae1a9
Bridge "br0"
Port "br0"
Interface "br0"
type: internal
Port "em1"
Interface "em1"
Port "vnet1"
Interface "vnet1"
Bridge "br1"
Port "em2"
Interface "em2"
Port "vnet2"
Interface "vnet2"
Port "br1"
Interface "br1"
type: internal
Port "vnet0"
Interface "vnet0"
Port "vnet3"
Interface "vnet3"
ovs_version: "2.0.2"Code:
root@uCPE:/var/lib/libvirt/guest_images# cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The primary network interface
auto em1
iface em1 inet manual
# The secondary network interface
auto em2
iface em2 inet manual
#The OVS Internet bridge interface WAN
auto br0
iface br0 inet static
address 10.32.0.111
netmask 255.255.255.0
gateway 10.32.0.1
dns-nameservers 10.32.0.1
pre-up brctl addbr br0
pre-up brctl addif br0 em1
post-down ip link set em1 down
post-down brctl delif br0 em1
post-down brctl delbr br0
#The OVS Internal bridge interface LAN
auto br1
iface br1 inet static
address 10.32.10.111
netmask 255.255.255.0
gateway 10.32.10.1
dns-nameservers 10.32.10.1Code:
root@uCPE:/var/lib/libvirt/guest_images# ifconfig
br0 Link encap:Ethernet HWaddr 00:25:90:5d:0d:dc
inet addr:10.32.0.111 Bcast:10.32.0.255 Mask:255.255.255.0
inet6 addr: 2601:646:8b01:6900:225:90ff:fe5d:ddc/64 Scope:Global
inet6 addr: 2601:646:8b01:6900:94d:73be:2b97:2cf3/64 Scope:Global
inet6 addr: fe80::225:90ff:fe5d:ddc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3925 errors:0 dropped:7 overruns:0 frame:0
TX packets:912 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:256869 (256.8 KB) TX bytes:121562 (121.5 KB)
br1 Link encap:Ethernet HWaddr 00:25:90:5d:0d:dd
inet addr:10.32.10.111 Bcast:10.32.10.255 Mask:255.255.255.0
inet6 addr: fe80::248d:4eff:fe82:d724/64 Scope:Link
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:685 errors:0 dropped:18 overruns:0 frame:0
TX packets:25 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:78798 (78.7 KB) TX bytes:2090 (2.0 KB)
em1 Link encap:Ethernet HWaddr 00:25:90:5d:0d:dc
inet6 addr: fe80::225:90ff:fe5d:ddc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4363 errors:0 dropped:0 overruns:0 frame:0
TX packets:956 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:338815 (338.8 KB) TX bytes:127524 (127.5 KB)
Memory:fb120000-fb13ffff
em2 Link encap:Ethernet HWaddr 00:25:90:5d:0d:dd
inet6 addr: fe80::225:90ff:fe5d:ddd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4182 errors:0 dropped:0 overruns:0 frame:0
TX packets:2069 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:337426 (337.4 KB) TX bytes:1706845 (1.7 MB)
Memory:fb100000-fb11ffff
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:61797 errors:0 dropped:0 overruns:0 frame:0
TX packets:61797 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9432016 (9.4 MB) TX bytes:9432016 (9.4 MB)
vnet0 Link encap:Ethernet HWaddr fe:54:00:81:a0:50
inet6 addr: fe80::fc54:ff:fe81:a050/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:80 errors:0 dropped:0 overruns:0 frame:0
TX packets:720 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:7692 (7.6 KB) TX bytes:84164 (84.1 KB)
vnet1 Link encap:Ethernet HWaddr fe:54:00:6d:2b:83
inet6 addr: fe80::fc54:ff:fe6d:2b83/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:178 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:45000 (45.0 KB) TX bytes:5177 (5.1 KB)
vnet2 Link encap:Ethernet HWaddr fe:54:00:ef:30:b8
inet6 addr: fe80::fc54:ff:feef:30b8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1944 errors:0 dropped:0 overruns:0 frame:0
TX packets:1196 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:1693093 (1.6 MB) TX bytes:116310 (116.3 KB)Code:
root@uCPE:/var/lib/libvirt/guest_images# ping 10.32.0.1
PING 10.32.0.1 (10.32.0.1) 56(84) bytes of data.
64 bytes from 10.32.0.1: icmp_seq=1 ttl=64 time=0.959 ms
64 bytes from 10.32.0.1: icmp_seq=2 ttl=64 time=0.706 ms
^C
--- 10.32.0.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.706/0.832/0.959/0.129 ms
root@uCPE:/var/lib/libvirt/guest_images# ping 10.32.10.1
PING 10.32.10.1 (10.32.10.1) 56(84) bytes of data.
64 bytes from 10.32.10.1: icmp_seq=1 ttl=255 time=1.23 ms
64 bytes from 10.32.10.1: icmp_seq=2 ttl=255 time=0.848 ms
^C
--- 10.32.10.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.848/1.042/1.236/0.194 ms
root@uCPE:/var/lib/libvirt/guest_images#