On Sat, Sep 7, 2013 at 4:44 PM, Philippe Gautier
<p.gautier.phili...@gmail.com> wrote:
> Hello
>
> I am tring to run the following configuration:
>
> kvm client --- net1 interface -- ovs switch -- net2
> interface -- kvm routeur
> eth0 192.168.6.1 tag = 10 br-machines trunks=10,20
> eth0.10 192.168.6.2
>
> but both router and client cannot ping each other.
>
> I know this case is already documented but i am facing a very strange
> situation.
>
> openvswitch guest : Linux virtu 3.2.0-4-amd64 #1 SMP Debian 3.2.46-1 x86_64
> GNU/Linux
> ovs_version: "1.4.2"
>
>
> Interfaces and Open-vswitch configuration
>
> ovs-vsctl add-br br-machines
> /usr/sbin/tunctl -u root -t net1
> /usr/sbin/tunctl -u root -t net2
>
> ovs-vsctl add-port br-machines net1
> ovs-vsctl add-port br-machines net1 tag=10
>
> ovs-vsctl add-port br-machines net2
> ovs-vsctl add-port br-machines net2 vlan_mode=trunk trunk=10,20
>
> kvm guest network related configuration
>
> kvm client
> -netdev tap,id=net1,ifname=net1,script=no,downscript=no \
> -device e1000,netdev=net1,mac=D8:5D:4C:81:92:71
>
> kvm router
> -netdev tap,id=net2,ifname=net2,script=no,downscript=no \
> -device e1000,netdev=net2,mac=D8:5D:4C:81:92:70
>
>
> kvm guest VM config
>
> ifconfig eth0 192.168.6.1/24
>
> kvm router config
>
> modprobe 8021q
> vconfig add eth0 10
> ifconfig eth0.10 192.168.6.2/24
>
>
> Debugging informations:
>
> ovs-vsctl show
>
> Bridge br-machines
> Port "net2"
> trunks: [10, 20]
> Interface "net2"
> Port br-machines
> Interface br-machines
> type: internal
> Port "net1"
> tag: 10
> Interface "net1"
> ovs_version: "1.4.2"
>
> ovs-vsctl list port
>
> net 2
>
> _uuid : a5d74a36-dc00-496d-82b3-f30a24feb081
> bond_downdelay : 0
> bond_fake_iface : false
> bond_mode : []
> bond_updelay : 0
> external_ids : {}
> fake_bridge : false
> interfaces : [e06dae02-3309-47b3-a299-53e47164396c]
> lacp : []
> mac : []
> name : "net2"
> other_config : {}
> qos : []
> statistics : {}
> status : {}
> tag : []
> trunks : [10, 20]
> vlan_mode : trunk
>
> net 1
> _uuid : fbe74c3d-283e-428e-9f59-a3703594fd78
> bond_downdelay : 0
> bond_fake_iface : false
> bond_mode : []
> bond_updelay : 0
> external_ids : {}
> fake_bridge : false
> interfaces : [45205c44-557f-4dad-8e6d-bd6401145ec5]
> lacp : []
> mac : []
> name : "net1"
> other_config : {}
> qos : []
> statistics : {}
> status : {}
> tag : 10
> trunks : []
> vlan_mode : []
>
> ovs-vsctl list-ifaces br-machines
> net1
> net2
>
> When kvm are pinging each other :
>
> ovs-appctl fdb/show br-machines
>
> port VLAN MAC Age
> 1 10 d8:5d:4c:81:92:71 170
> 2 10 d8:5d:4c:81:92:70 0
>
> Dump when kvm client is pinging kvm router
>
> ovs-dpctl dump-flows br-machines
> in_port(1),eth(src=d8:5d:4c:81:92:71,dst=ff:ff:ff:ff:ff:ff),eth_type(0x0806),arp(sip=192.168.6.1,tip=192.168.6.2,op=1,sha=d8:5d:4c:81:92:71,tha=00:00:00:00:00:00),
> packets:22, bytes:924, used:0.712s, actions:push_vlan(vid=10,pcp=0),2,0
>
>
> Dump when router is pinging kvm client
>
> ovs-dpctl dump-flows br-machines
> in_port(2),eth(src=d8:5d:4c:81:92:70,dst=ff:ff:ff:ff:ff:ff),eth_type(0x8100),vlan(vid=10,pcp=0),encap(eth_type(0x0806),arp(sip=192.168.6.2,tip=192.168.6.1,op=1,sha=d8:5d:4c:81:92:70,tha=00:00:00:00:00:00)),
> packets:36, bytes:1512, used:0.400s,
> actions:pop_vlan,1,push_vlan(vid=10,pcp=0),0
>
> KVM client
>
> From 192.168.6.1 Destination Host unreachable
>
> KVM router
>
> From 192.168.6.2 Destination Host unreachable
>
> Any ideas or advices ?
The traffic flowing through OVS seems to be OK. What do you see if you
run tcpdump on the various interfaces in the path?
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