[ovs-discuss] vm with openvswitch+KVM can not access extranal network, can ping gateway

Sat Aug 24 01:52:24 UTC 2013

can someone help ?

2013/8/22 不坏阿峰 <onlydebian at gmail.com>:
> vm with openvswitch+KVM can not access extranal network, can ping gateway
>
> Cloudstack4.1.1
> A: one kvm host ubuntu12.04 with openvswitch,
> B:  xen server6.0,
> C: one kvm host centos with openvswitch
>
> in cloudstack have two network.
> Guestvlan301 Isolated 192.168.31.0/24 ,Egress rule,   0.0.0.0/0 all
> Guestvlan300 Isolated  192.168.31.0/24  ,Egress rule,   0.0.0.0/0 all
>
>
> ①:vrouter301 run on Xen,   Public IP Address 192.168.240.54 Guest IP
> Address 192.168.31.1
>    vm in vlan301 ,can ping gateway 192.168.31.1 and can access
> internet. vm can run on kvm or xen, both ok.
>
> ②:vronter300 run on Kvm with openvswitch,   Public IP Address
> 192.168.240.53 Guest IP Address 192.168.30.1
>    vm in vlan300 ,can ping gateway 192.168.30.1, but can not access
> internet.  vrouter can access internet.
>
> how to make vm under kvm+openvswitch to access outside network and internet
>
>
> [root at centos-kvm01 libvirt]# ovs-vsctl show
> 7cb5f505-7ac1-4403-9f9d-101882ed7bad
>     Bridge kvmmgt
>         Port kvmmgt
>             Interface kvmmgt
>                 type: internal
>         Port "eth0"
>             Interface "eth0"
>     Bridge "cloudbr0"
>         Port "cloudbr0"
>             Interface "cloudbr0"
>                 type: internal
>         Port "eth1"
>             Interface "eth1"           ## Eth1 uplink port is Esxi
> vswitch in promiscuous mode,  Xen server Eth1 uplink this too, can
> work fine ; Kvm use native bridge work fine too.
>         Port "vnet3"
>             tag: 240
>             Interface "vnet3"
>         Port "vnet0"
>             tag: 301
>             Interface "vnet0"
>         Port "vnet1"
>             tag: 300
>             Interface "vnet1"
>         Port "vnet4"
>             tag: 240
>             Interface "vnet4"
>     Bridge "cloud0"
>         Port "cloud0"
>             Interface "cloud0"
>                 type: internal
>         Port "vnet2"
>             Interface "vnet2"
>     Bridge storage
>         Port "eth2"
>             Interface "eth2"
>         Port storage
>             Interface storage
>                 type: internal
>     ovs_version: "1.10.0"
>
>
> i do the test,
>   one VM 192.168.30.90  run  ping 192.168.123.1
>   vrouter 192.168.30.1(outside IP 192.168.240.53 vlan 240)  run  ping
> www.google.com
>
> [root at centos-kvm01 ~]# ovs-dpctl dump-flows |grep 30.90
>
> in_port(9),eth(src=02:00:07:94:00:09,dst=02:00:3c:30:00:06),eth_type(0x0806),arp(sip=192.168.30.1,tip=192.168.30.90,op=2,sha=02:00:07:94:00:09,tha=02:00:3c:30:00:06),
> packets:0, bytes:0, used:never, actions:push_vlan(vid=300,pcp=0),5
> in_port(11),eth(src=06:28:b6:00:01:20,dst=00:50:56:97:5c:55),eth_type(0x0800),ipv4(src=192.168.30.90,dst=192.168.123.1,proto=1,tos=0,ttl=63,frag=no),icmp(type=8,code=0),
> packets:5855, bytes:573790, used:0.810s,
> actions:push_vlan(vid=240,pcp=0),5
> in_port(5),eth(src=02:00:3c:30:00:06,dst=02:00:07:94:00:09),eth_type(0x8100),vlan(vid=300,pcp=0),encap(eth_type(0x0806),arp(sip=192.168.30.90,tip=192.168.30.1,op=1,sha=02:00:3c:30:00:06,tha=00:00:00:00:00:00)),
> packets:0, bytes:0, used:never, actions:pop_vlan,9
> in_port(5),eth(src=02:00:3c:30:00:06,dst=02:00:07:94:00:09),eth_type(0x8100),vlan(vid=300,pcp=0),encap(eth_type(0x0800),ipv4(src=192.168.30.90,dst=192.168.123.1,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0)),
> packets:5855, bytes:597210, used:0.809s, actions:pop_vlan,9
>
> ######   actions:push_vlan(vid=240,pcp=0),5  ,  this is maybe have
> some problem !!!!!!!  is it??
>
>
>
>
> [root at centos-kvm01 ~]# ovs-dpctl dump-flows |grep 240.53
> in_port(11),eth(src=06:28:b6:00:01:20,dst=00:50:56:97:5c:55),eth_type(0x0800),ipv4(src=192.168.240.53,dst=74.125.128.105,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0),
> packets:6167, bytes:604366, used:0.486s,
> actions:push_vlan(vid=240,pcp=0),5
> in_port(5),eth(src=00:50:56:97:5c:55,dst=06:28:b6:00:01:20),eth_type(0x8100),vlan(vid=240,pcp=0),encap(eth_type(0x0806),arp(sip=192.168.240.1,tip=192.168.240.53,op=1,sha=00:50:56:97:5c:55,tha=00:00:00:00:00:00)),
> packets:0, bytes:0, used:never, actions:pop_vlan,11
> in_port(5),eth(src=00:50:56:97:5c:55,dst=06:28:b6:00:01:20),eth_type(0x8100),vlan(vid=240,pcp=0),encap(eth_type(0x0800),ipv4(src=74.125.128.105,dst=192.168.240.53,proto=1,tos=0,ttl=49,frag=no),icmp(type=0,code=0)),
> packets:6059, bytes:618018, used:0.450s, actions:pop_vlan,11
> in_port(11),eth(src=06:28:b6:00:01:20,dst=00:50:56:97:5c:55),eth_type(0x0806),arp(sip=192.168.240.53,tip=192.168.240.1,op=2,sha=06:28:b6:00:01:20,tha=00:50:56:97:5c:55),
> packets:0, bytes:0, used:never, actions:push_vlan(vid=240,pcp=0),5