Hi Justin,
Configuration details: 1) The 2 VMs are running on the same OpenStack compute node (Grizzly version) 2) Both VMs have a virtual nic to receive multicast traffic in VLAN 1002 3) Openvswitch version is 1.9.0 4) ovs quantum plugin is configured in tenant_network_type vlan 5) The ovs bridge interface is eth1 (output of "ovs-vsctl show") Bridge br-int Port "qvo128d8126-0c" tag: 1 Interface "qvo128d8126-0c" Port "qvof11a3165-a5" tag: 2 Interface "qvof11a3165-a5" Port "qvo0cf1ef19-80" tag: 1 Interface "qvo0cf1ef19-80" Port "qvo48fdea98-df" tag: 2 Interface "qvo48fdea98-df" Port br-int Interface br-int type: internal Port "qvo191216ce-02" tag: 2 Interface "qvo191216ce-02" Port "qvo5de83fb2-d4" tag: 2 Interface "qvo5de83fb2-d4" Port "int-br-eth1" Interface "int-br-eth1" Bridge "br-eth1" Port "eth1" Interface "eth1" Port "br-eth1" Interface "br-eth1" type: internal Port "phy-br-eth1" Interface "phy-br-eth1" 6) eth1 is physically connected to a Cisco L3 switch. That switch port is a VLAN trunk port, properly configured in VLAN group 1002. The multicast source is input from another port on the same switch. +---------------------------------+ |Compute Node | | +-------------------------+ | | |VLAN 1002 | | | | +-----+ +-----+ | | | | |VM-A | |VM-B | | | | | +----++ ++----+ | | | +--------+-------+--------+ | | | | | | +-+-------++ | | | br-int | | | +------+----------+-------+ | | | | | | | OVS | | | +------+----------+-------+ | | | br-eth1 | | | +-----+----+ | | | | +------------+---+---+------------+ | eth1 | +---+---+ | | | | | Trunk port in VLAN 1002 +---------------------+-+-+------------------------+ |Cisco switch +---+ | | | | +---+ | +---------------------+-+-+------------------------+ | | Multicast Source Our experiment result is "VM-B would not receive the multicast traffic joined by VM-A". Regards, Taurus -----Original Message----- From: Justin Pettit [mailto:jpet...@nicira.com] Sent: Wednesday, December 11, 2013 11:53 AM To: Taurus Cheung Cc: discuss@openvswitch.org Subject: Re: [ovs-discuss] IGMP snooping/query support in Openvswitch On Dec 10, 2013, at 7:39 PM, Taurus Cheung <taurus.che...@harmonicinc.com> wrote: > That's good my understanding is correct. > > Although OVS doesn't support IGMP snooping, could I know what underlying > mechanism in OVS result in "VM-B would not receive the multicast traffic > joined by VM-A"? How's it configured? Did you install any flows or VLANs? Anything else that may affect configuration? --Justin
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