International Business Machines Corporation

Lenovo (singapore) Pte. Ltd.

Zheng Dong Zhu

Gang Tang

Yi Jing Zhu

Guo Xing He

Yuan Wx Li

Yun Feng Sun

Xiang Hui Dong

Tamanna Zackaria Sait

Vasmi Mohammad Abidi

Shi Xin Ruan

Yuhong Guo

One embodiment discloses a method and apparatus for synchronizing IP information of virtual machines. The method includes: obtaining an IP relevant message of at least one virtual machine within a subnet, recording IP information and connection information of the at least one virtual machine based on the IP relevant message, and modifying connection information of a specific virtual machine in response to migration of the specific virtual machine. The apparatus corresponds to the method. With the method and apparatus above, IP information and connection information of respective virtual machines within the subnet are recorded regularly and routinely. Once a certain virtual machine is migrated, updating and modifying connection information of the migrated virtual machine is only needed, but without a need for resending a request to the Dynamic Host Configuration Protocol (DHCP) server. Thus, network disruptions caused by non-synchronization of IP information when the virtual machine is migrated are avoided.

Synchronizing IP information of virtual machines

A PVLAN switch for connecting a PVLAN to a non-PVLAN device is configured as a primary VLAN with secondary VLANs, the primary VLAN includes promiscuous ports, each of the secondary VLANs includes a smart PVLAN trunk port, and the smart PVLAN trunk port is included in at least two secondary VLANs where the smart PVLAN trunk port and the promiscuous port connect to non-PVLAN devices. A frame is received on a smart PVLAN trunk port sent from a non-PVLAN device, and includes a destination address and a secondary VLAN ID. The PVLAN switch port ID for the first frame, and a primary VLAN ID for the secondary VLAN ID are identified. If the frame is a non-isolated port, the secondary VLAN ID is modified to be the primary VLAN ID, and the modified frame is sent to another non-PVLAN device connected to the PVLAN switch port.

Connecting a PVLAN switch to a non-PVLAN device

Transferring data by a gateway, the gateway being connected to a network with a SIMM-node. In response to a request to establish multi-MAC address routing information of a SIMM-node, obtaining multiple MAC addresses corresponding to an IP address of the SIMM-node. The multi-MAC address routing information of the SIMM-node is established at least according to the obtained multiple MAC addresses corresponding to the IP address of the SIMM-node. In response to having received a data message sent to the IP address of the SIMM-node, routing the data message by using the established multi-MAC address routing information of the SIMM-node.

Transferring data in a gateway

Transferring data by a gateway that is connected to a network with a SIMM-node. In response to a request to establish multi-MAC address routing information of a SIMM-node, multiple MAC addresses are obtained, corresponding to an IP address of the SIMM-node. The multi-MAC address routing information, including information in a route table, an ARP table, and a NEXT_HOP table, is established by adding to the ARP table corresponding relationships of the IP address with the multiple MAC addresses of the SIMM-node. The corresponding relationships of the IP address with the multiple MAC addresses of the SIMM-node is added to the NEXT_HOP table. Routing entries of the SIMM-node are established in the route table. In response to receiving a data message sent to the IP address of the SIMM-node, the message is routed by using the established multi-MAC address routing information of the SIMM-node.

The present invention discloses a gateway and its method of transferring data, the gateway being connected to a network by a SIMM-node. In response to a request to establish multi-MAC address routing information of a SIMM-node, multiple MAC addresses corresponding to an IP address of the SIMM-node are obtained. The multi-MAC address routing information of the SIMM-node is established at least according to the obtained multiple MAC addresses corresponding to the IP address of the SIMM-node. In response to receiving a data message sent to the IP address of the SIMM-node, the data message is routed by using the established multi-MAC address routing information of the SIMM-node.

Embodiments of the invention relate to reflective relay (RR) processing on logical ports for channelized links in edge virtual bridging (EVB) systems. One embodiment includes providing a virtual edge bridge (VEB) mode and a virtual Ethernet port aggregator (VEPA) mode in an EVB system on a same port of a physical switch. RR capability per channel is negotiated between a server and the physical switch in the EVB system. RR per channel is supported on the physical switch of the EVB system using RR setting information per channel.

Reflective relay processing on logical ports for channelized links in edge virtual bridging systems

A method of managing data transmission based on virtual local area networks includes obtaining a first VLAN property of a first physical interface and a second VLAN property of a second physical interface; in response to determining the first VLAN property and the second VLAN property are at least partially identical, obtaining a first virtual interface corresponding to the first physical interface and a second virtual interface corresponding to the second physical interface; and mapping the first physical interface and the second physical interface to an identical data channel via the first virtual interface and the second virtual interface, wherein the first physical interface and the second physical interface are located in a same processing device.

Link aggregation based on virtual interfaces of VLANs

Embodiments of the invention relate to synchronizing multicast groups of a virtual machine during migration of the virtual machine. A first list and a second list, indicating multicast groups corresponding to the first port and second port respectively, are obtained in response to detection of migration of the virtual machine from a first port to a second port of a same switch. The second list is updated so that the second list contains the multicast groups in the first list. An undesired multicast group is aged. Multicast groups of a virtual machine may be synchronized in the process of migration of the virtual machine, thereby reducing or removing the time during which the virtual machine multicast service is disrupted.

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Wuxi, China

Zheng Dong Zhu