这个问题我也遇到了，但是没人回答。

floodlight make the VMs can not getDHCP IP address

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on 2014-01-14

 

I used the floodlight as the openflow controller in openstack. in the compute node ,I use the command "set-controller IP:port" to set the floodlight address as the ovs bridge br-int's controller. but when I typed the command,I found the OVS flow tables were flushed,the flow rules were deleted . So when I created a VM,the VM could not get the DHCP IP address,my Openstack is Grizzly vlan mode,I found the DHCP reply from network node could not recived by VM.

 Does you have the same problem? Does floodlight can be used in OPENSTACk as the openvswitch's controller? I used the floodlight to get the virtual network topology.

before I set the controller ,the OVS flow table is like this:

[root@node8 ~]# ovs-ofctl dump-flows br-int

NXST_FLOW reply (xid=0x4):

 cookie=0x0, duration=52.074s, table=0, n_packets=11, n_bytes=1430, idle_age=15, priority=3,in_port=29,dl_vlan=1000 actions=mod_vlan_vid:8,NORMAL

 cookie=0x0, duration=307.365s, table=0, n_packets=8123, n_bytes=728475, idle_age=0, priority=0 actions=NORMAL

[root@node8 ~]# ovs-vsctl show

3fa12857-c008-451f-a6f3-70cf30d1b92e

    Bridge br-int

        Port "qvoab109943-af"

            tag: 8

            Interface "qvoab109943-af"

        Port br-int

            Interface br-int

                type: internal

        Port "int-br-eth1"

            Interface "int-br-eth1"

    Bridge "br-eth1"

        Port "eth1"

            Interface "eth1"

        Port "phy-br-eth1"

            Interface "phy-br-eth1"

        Port "br-eth1"

            Interface "br-eth1"

                type: internal

    ovs_version: "1.7.1"

but after I set the controller,the flow tables is like this:

[root@node8 ~]# ovs-ofctl dump-flows br-int

NXST_FLOW reply (xid=0x4):

[root@node8 ~]# ovs-vsctl show

3fa12857-c008-451f-a6f3-70cf30d1b92e

    Bridge br-int

        Controller "tcp:10.0.0.7"

            is_connected: true

        Port "qvoab109943-af"

            tag: 8

            Interface "qvoab109943-af"

        Port br-int

            Interface br-int

                type: internal

        Port "int-br-eth1"

            Interface "int-br-eth1"

    Bridge "br-eth1"

        Port "eth1"

            Interface "eth1"

        Port "phy-br-eth1"

            Interface "phy-br-eth1"

        Port "br-eth1"

            Interface "br-eth1"

                type: internal

    ovs_version: "1.7.1"