Abstract: A control method of virtual link discovery and a system for Fiber Channel over Ethernet (FCoE) protocol allocates some Ethernet Nodes (ENodes) and FCoE Forwarders (FCFs) to different virtual networks during networking, and provides a Virtual Node (VN) port of each ENode and a Virtual Fiber Channel (VFC) port of each FCF with a Virtual Network Identification (VN ID) of a virtual network to which they belong. In this way, a VN port of an ENode may establish a virtual link with a VFC port that belongs to the same virtual network in preference, so that some ENodes are made to access FCFs that belong to the same virtual networks as the ENodes.

Abstract: According to an example, a file transfer protocol data transmission method applied in a stack system includes an FTP server master process receiving a file transfer request from an FTP client, for a file requested by the file transfer request, the FTP server master process judging whether the file and the FTP server master process are in a same chassis, when the file and the FTP server master process are not in the same chassis, the FTP server master process sends a file transfer notice to an FTP server slave process running on a chassis which is in the stack system and which the file is in.

Abstract: The present disclosure describes reducing flooding of link state information of a link state protocol in a network with multiple routers. A filtering strategy is pre-configured on a router interface for filtering link state information generated by a first router. The filtering strategy is to enable link state database (LSDB) isolation between a second router associated with the router interface and the first router. Link state information generated by the first router is received or sent according to the pre-configured filtering strategy via the router interface.

Abstract: A method for data transmission disclosed is applied to an access point for use in a wireless local area network. The access point has multiple antennas. The method comprises in response to transmitting a first message successfully to a station, determining a maximum transmitting rate at which a message can be transmitted successfully using a current antenna group by increasing the transmitting rate and transmitting a message repeatedly; and, transmitting further messages to the station at the determined maximum transmitting rate.

Abstract: The present invention provides an apparatus and method for processing a packet. An interface processing module selects one from all service processing modules as a service processing module for processing a packet; if the service processing module needs to perform tunnel processing for the packet, the service processing module transmits the packet after performing the tunnel processing; if another service processing module needs to perform tunnel processing for the packet, the service processing module transmits the packet to a service processing module needing to perform tunnel processing for the packet. According to the present invention, the packet can be processed uniformly by the service processing module, so it is not unnecessary to store session states in the service processing modules, and also not unnecessary to perform synchronization between the service processing modules, which greatly decreases complexity of processing the packet and saves system bandwidth.

Abstract: A device for stabilizing fuel in a fuel tank comprises activated carbon. The activated carbon is configured to be inserted into or installed inside a fuel tank, so that it is in contact with the fuel. The device allows the activated carbon to be in contact with the fuel, but does not allow it to be dispersed in the fuel. A method for stabilizing fuel in a fuel tank comprises adding the device to the fuel tank so that it is in contact with the fuel.

Abstract: Link Aggregation Control Protocol (LACP) loop detection in a network that includes a Software Defined Networking (SDN) controller, a server and an edge switch is provided. The server virtualizes a virtual switch and virtual machines. The virtual switch includes uplink ports that are aggregated with downlink ports of the edge switch to form an aggregation group, and the SDN controller controls operation of the virtual switch. The virtual switch periodically sends a LACP data unit (LACPDU) message to the edge switch via each of the uplink ports in the aggregation group. The virtual switch receives a LACPDU message from the edge switch via one of the uplink ports in the aggregation group. When it is determined that the received LACPDU message originates from the virtual switch itself, the virtual switch keeping one of the uplink ports running and shutting down the rest of the uplink ports.

Abstract: A method is described in which at least one access event matching a predetermined security entry detected by a SDN switch is received; a target host of the access event is determined; and a security validation module corresponding to the predetermined security entry is invoked to obtain a security validation result.

Abstract: A method for allocating VLAN resources, an FCoE device and an FCoE system. A first device maps a virtual storage area network identity (VSAN ID) corresponding to a fiber channel (FC) message into a media access control (MAC) address according to a preset relation. The first device obtains a VLAN ID corresponding to the VSAN ID according to the preset relation and encapsulates the MAC address and the VLAN ID into an Ethernet message corresponding to the FC message. The preset relation is used for mapping multiple VSAN IDs, which correspond to the same VLAN ID, into different MAC addresses.

Abstract: A method for maintaining a multicast forwarding table item and a Protocol Independent Multicast (PIM) router are disclosed. The method includes: receiving, by a PIM router, a multicast leave message for leaving a multicast group through an input port, finding, by the PIM router, a multicast forwarding table item corresponding to the multicast group in the PIM router, deleting the input port through which the multicast leave message is received from an output port list of the multicast forwarding table item, if there is a switcher identifier on the input port in the output port list and the output port list of the multicast forwarding table item is empty, deleting the multicast forwarding table item immediately or accelerating the deletion of the multicast forwarding table item, wherein the switcher identifier indicates that the input port corresponds to a switcher.

Abstract: Recovery of an Internet Protocol (IP) address allocated to a client using Dynamic Host Configuration Protocol (DHCP) is provided. Media Access Control (MAC) address and the IP address of the client are stored. When the client is determined as being offline, MAC address and IP address of the client are determined and a DHCP release message carrying the IP address of the client is sent to an address allocation server. The client is determined as being offline based on a shutdown status of a port to which the client is connected. The port may be on the relay device, or an access device that connects the client and the relay device.

Abstract: The invention provides a submersible, electrically-powered sensor assembly that incorporates a flexible seal assembly having operative and non-operative electrical traces of a uniform vertical height for carrying clamping loads and avoiding signal loss along a signal carrying trace due to compression of the flex seal, minimizing fluid leak paths between two flange surfaces, providing stability in compression, and enabling electrical communication in an environment having an operating fluid.

Abstract: According to an example, a guide bracket and an electronic device adopting the guide bracket are provided. A free end of a resilient sheet installed in a wall of the guide bracket is to be held by a snap-fit part set in a chassis beyond the external surface of the wall where the resilient sheet is located to implement position limiting of the guide bracket in the forward-backward direction. The free end of the resilient sheet is to retreat inwards with the bending of the resilient sheet towards the interior of the wall where the resilient sheet is located to avoid the snap-fit part.

Abstract: The disclosure involves selecting a receiving antenna in a wireless local area network, comprises: testing each antenna in an antenna array to obtain an antenna quality parameter of each antenna corresponding to a client Station, and determining an optimal receiving antenna corresponding to said Station according to the antenna quality parameter of each antenna corresponding to the Station; setting the optimal receiving antenna corresponding to said Station as the receiving antenna upon receiving a notification transmission message transmitted by said Station.

Abstract: According to an example, in a method for MAC address distribution by an apparatus, a MAC address is received in the apparatus, in which the apparatus includes a data store on which is stored a local slice set containing a plurality of slices, and in which each of the plurality of slices is assigned a respective slice identifier. An address value for the received MAC address may be determined and a correlation between the determined address value and one of the slice IDs of the plurality of slices may be identified. In addition, the received MAC address may be stored in the slice having the slice identifier identified as being correlated to the determined address value.

Abstract: This invention discloses a method, apparatus, and system for packet transmission. The method for packet transmission includes: configuring the two logical interfaces of a bidirectional tunnel to operate in bridge mode; at the first logical interface of the two, encapsulating Layer 2 packets and the protocol type information in tunnel packets and transmitting the packets to the peer through the bidirectional tunnel; at the second logical interface of the two, transmitting the tunnel packets to the corresponding Layer 2 protocol stack for processing according to the protocol type information in the received tunnel packets. The present invention enables the logical interfaces of a bidirectional tunnel to operate as Layer 2 ports to transmit Layer 2 packets.

Abstract: The present disclosure relates to a fault handling method for a communication network that comprises a plurality of intersecting Ethernet rings including at least a first Ethernet ring having a first master node and a first transit node and a second Ethernet ring having a second master node and a second transit node, the first Ethernet ring and the second Ethernet ring intersecting at a first shared link connecting at least a first shared node and a second shared node shared between the first Ethernet ring and the second Ethernet ring, the method comprising a ring-extension process including the second master node joining the first Ethernet ring as a transit node upon determination of a fault in the first shared link, and the second master node sending a RING EXTEND message to notify the second transit node to join the first Ethernet ring as a transit node of the first Ethernet ring.

Abstract: A method for implementing neighbor discovery protocol in a wireless local area network (WLAN) and an access point (AP). In the method, the AP prestores the logic group of each wireless client associated to the AP, determines the logic group of a neighbor discovery protocol related message when the message is received by the AP, and transmits the neighbor discovery protocol related message to at least one wireless client included in the logic group of the message via a unicast mode, respectively, according to prestored information relating to the logic group of each wireless client associated to the AP.

Abstract: A control plane of a logical network device creates a service link aggregation group and adds one port from each member network device to the service link aggregation group. The logical network device includes member network devices and each port connects the logical network device to the same neighbor device. When a port of the logical network device receives a message with an unknown source address, the control plane determines if the receiving port is in any service link aggregation group. After determining the receiving port is in the service link aggregation group, the control plane configures a data plane of the logical network device with mappings between the address and the ports in the service link aggregation group.

Abstract: A manually powered wheelchair includes a first lever associated with a first rear wheel and demountably coupled to a first drivetrain, the first lever having a first brake thereon. The wheelchair also includes a second lever associated with a second rear wheel and demountably coupled to a second drivetrain, the second lever having a second brake thereon. Each drivetrain includes a chainring, a chain, and a freewheel, and each drivetrain has a fixed gear ratio. The freewheel of each drivetrain is actuated by manual pivoting of the lever associated therewith. In use, the wheelchair achieves changes in mechanical advantage when a user shifts the user's hands up and down the first and second levers.