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[Expired for neutron because there has been no activity for 60 days.]

** Changed in: neutron
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1238445

Title:
  cannot connect to VMs via gre tunnel with openvswitch

Status in OpenStack Neutron (virtual network service):
  Expired

Bug description:
  I can not connect to VM via GRE tunnel with openvswitch.

  my environments are

  * 3 nodes (controller, network, compute)
  * openvswitch and tunnel_type : gre

  network node and compute node have such
  /etc/neutron/plugins/openvswitch/ovs_neuron_plugin.ini

      [ovs]
      tenant_network_type = gre
      network_vlan_ranges =
      enable_tunneling = True
      tunnel_type = gre
      tunnel_id_ranges = 1:1000
      integration_bridge = br-int
      tunnel_bridge = br-tun
      local_ip = 10.200.10.59
      bridge_mappings = physnet1:br-eth1
      [agent]
      [securitygroup]
      firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
      [database]
      connection = mysql://ovsuser:ovsuser@10.200.10.57:3306/ovs_neutron

  openvswitch agent on network node has no error. on compute node has
  such error messages.

      2013-10-11 14:57:59.880 11214 ERROR neutron.agent.linux.ovs_lib [-] Unable to execute ['ovs-ofctl', 'add-flow', 'br-tun', 'hard_timeout=0,idle_timeout=0,priority=1,in_port=-1,actions=resubmit(,2)']. Exception:
  Command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-ofctl', 'add-flow', 'br-tun', 'hard_timeout=0,idle_timeout=0,priority=1,in_port=-1,actions=resubmit(,2)']
      Exit code: 1
      Stdout: ''
      Stderr: 'ovs-ofctl: -1: negative values not supported for in_port\n'

  this error is openvswitch's standard error. setup_tunnel_port()
  function on neutron/plugins/openvswitch/agent/ovs_neutron_agent.py has
  code such as ...

          if ofport < 0:
              LOG.error(_("Failed to set-up %(type)s tunnel port to %(ip)s"),
                        {'type': tunnel_type, 'ip': remote_ip})
              return 0

  ofport include strings. "if int(ofport) < 0" is correct ?

  this is not problem..  So network node and compute node have tunnel
  settings with openvswitch.

      network# ovs-vsctl show | grep remote
                      options: {in_key=flow, local_ip="10.200.10.58", out_key=flow, remote_ip="10.200.10.59"}
      compute# ovs-vsctl show | grep remote
                      options: {in_key=flow, local_ip="10.200.10.59", out_key=flow, remote_ip="10.200.10.58"}


  but ovs-ofctl shows that there is no gre-1 on compute node.

      compute# ovs-ofctl show br-tun
      <...snip...>
       1(patch-int): addr:12:06:8c:21:76:a0
           config:     0
           state:      0
           speed: 0 Mbps now, 0 Mbps max
       LOCAL(br-tun): addr:36:20:55:99:a1:45
           config:     0
           state:      0
           speed: 0 Mbps now, 0 Mbps max
      OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0

  There is gre-2 on network node.

      # ovs-ofctl show br-tun
       <...snip...>
       1(patch-int): addr:7a:2d:5e:02:e3:fe
           config:     0
           state:      0
           speed: 0 Mbps now, 0 Mbps max
       2(gre-2): addr:32:86:3c:69:0e:c3
           config:     0
           state:      0
           speed: 0 Mbps now, 0 Mbps max
       LOCAL(br-tun): addr:96:ea:54:a0:fb:4e
           config:     0
           state:      0
           speed: 0 Mbps now, 0 Mbps max
      OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0

  Any Idea ? Thanks.

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