48 results about "Multiple homing" patented technology

A multi-home agent control apparatus and method are provided. The multi-home agent control apparatus includes a packet observing unit, which observes a packet input to or output from a home link; a home agent list storage unit, which creates a home agent list using home address information included in a binding update (BU) message and stores the home agent list if the packet observing unit receives the BU message and a binding acknowledgement (BACK) message; and a preference value calculation unit, which calculates a preference value of each of the home agents using the home agent list.

The present invention describes various techniques which may be used for determining multi-path latency in data networks which utilize a multi-homed transport protocols. Using the technique of the present invention, for example, appropriate source and destination addresses may be selected for specific IP datagrams in order to achieve an optimal communication path between endpoints which utilize a multi-homed transport protocol.

This invention discloses a method for selecting homing user servers of IP multimedia subsystem automatically, which sets interfaces between a user locating function device and multiple homing user servers, and the user locating functional device enquires the state of the multiple homing user servers periodically and updates records, a call session control functional device enquires information of the servers to the user locating function device, which selects one available server and feeds back the information to the call session control function device based on recorded state of the multiple servers, when a HSS is faulty, SLR can identify it timely and switches the access path of CSCF to a disaster recovery backup corresponding to the faulty HSS automatically by SLF side so as to guarantee correctness of business.

For use in a system including a first data forwarding device, a second data forwarding device, a third data forwarding device, a first communications link between the first data forwarding device and the second data forwarding device, and a second communications link between the first data forwarding device and the third data forwarding device, the first and second communications links belonging to a link aggregation group (LAG), a method includes (1) generating a message (i) for testing a first path between the first data forwarding device and the second data forwarding device, and a second path between the first data forwarding device and the third data forwarding device, and (ii) including an Internet protocol (IP) datagram including a multicast IP destination address and a payload containing path testing information; and (2) sending, over the LAG, the message from the first data forwarding device to both the second data forwarding device and the third data forwarding device. Responsive to receiving an instance of the message by either of the second or third data forwarding device, such device(s) (1) determine whether or not the received instance of the message is a fault detection on a multihomed link aggregation group message, and (2) processing the received instance of the message based on the determination of whether or not it is a fault detection on a multihomed link aggregation group message.

A method, a device and a system for determining a DF of a multicast stream are disclosed. In an EVPN scenario, a CE device is connected to the plurality of PE devices in a dual-homing or multi-homingmanner. The first PE device is any one of the plurality of PE devices. After determining that the CE device connected with Ethernet links joins in a multicast group of a multicast stream, the first PEdevice determines bandwidth occupation conditions of a plurality of Ethernet links included in an ES to which the Ethernet links belong, and then determines the PE device corresponding to the Ethernet link with the least multicast flow bandwidth occupation as a DF of the multicast flow according to the multicast flow bandwidth occupation conditions of the plurality of Ethernet links. Therefore, the load sharing balance of the multicast stream transmitted in the EVPN can be improved.

A method is executed by a network device to determine a loop free alternate (LFA) for a multi-homed prefix in an IS-IS area or IS-IS domain. The method includes selecting a next node from the IS-IS area or the IS-IS domain and selecting a next prefix for the selected node. A check is made whether the selected prefix is a multi-homed prefix (MHP). A check is made whether a shortest path first (SPF) cost of the selected node and cost to the selected prefix is equal to an SPF cost of the selected prefix, whether a next hop of selected prefix is same as next hop of selected node, and whether a LFA next hop of the selected node is better protection than a current next hop protection of the selected prefix and the LFA next hop of the selected node is then inherited for the selected prefix.

The embodiment of the invention discloses a traffic forwarding processing method and equipment. The method comprises the following steps: first network equipment receives a first message from second network equipment, wherein the first message comprises an MAC (Media Access Control) address of target equipment and a color identifier of the MAC address; the first network device obtains an address of a third network device, and the destination device is mostly attributed to the second network device and the third network device; and the first network device determines a first forwarding strategy according to the address of the third network device and the color identifier, and forwards the traffic sent to the MAC address to the third network device according to the first forwarding strategy. According to the invention, the traffic forwarding efficiency can be improved.

This application provides a multicast forwarding method, device, and electronic equipment, which relate to the technical field of data transmission. Since the same multi-homing network is configured with the same ESI, the multi-cast forwarding method provided by this application is based on the multi-homing scenario. The preset correspondence between VXLAN and ESI determines whether the multicast traffic sent by the multicast source is a multi-homing network. If so, only one copy of the multicast traffic needs to be sent to the remote VTEP. After reaching the remote VTEP , just copy it locally. In this way, the replication workload of the VTEP accessed by the multicast source is reduced, and the public network bandwidth occupied during the transmission process is also reduced, effectively alleviating the multicast traffic congestion caused by insufficient bandwidth resources.

The present application provides a packet processing method and device. The method is applied to a first PE, and the first PE is in an EVPN VPLS network. The EVPN VPLS network further includes a first CE and a second PE. The first PE and the second PE form a multi-homed member group, the first CE is respectively connected to the first PE and the second PE through different links, and the method includes: the first PE receives the third PE The sent network packet, the network packet includes a packet attribute mark; when the role of the first PE in the multi-homed member group is the backup DF, the first PE marks the packet according to the packet attribute , and no longer send the network packet to the first CE.

A method, device and system for determining DF of a multicast stream. In an EVPN scenario, a CE device is dual-homed or multi-homed to multiple PE devices. The first PE device is any one of the multiple PE devices. After the first PE device determines that the CE device connected to the Ethernet link joins the multicast group of the multicast stream, it determines the bandwidth occupancy of multiple Ethernet links included in the ES to which the Ethernet link belongs, Then, according to the bandwidth occupancy of the multicast flow of the multiple Ethernet links, the PE device corresponding to the Ethernet link with the least bandwidth occupancy of the multicast flow is determined as the DF of the multicast flow. Therefore, it is helpful to improve the balance of load sharing for transmitting multicast streams in the EVPN.

The present invention aims at providing a method for realizing the user multihoming, a. when the update request on the location of a terminal with a multihoming business is received, a first network MSC / VLR originates the location update to a first network HLR; b. the first network HLR judges that the terminal is the terminal of the multihoming business, returns the user data information, and returns the user information of other second network in regard of the terminal to the MSC / VLR of the first network; c. the first network MSC / VLR saves the user data information and originates the location update request to the relevant other second network HLR according to the user information of the received other second network. The second network HLR saves the routing information of the user and receives the relevant user data. In such a way, the user in a newly accessed network can be met, to both experience the new network and reserve the demand of an original network number.

For use in a system including a first data forwarding device, a second data forwarding device, a third data forwarding device, a first communications link between the first data forwarding device and the second data forwarding device, and a second communications link between the first data forwarding device and the third data forwarding device, the first and second communications links belonging to a link aggregation group (LAG), a method includes (1) generating a message (i) for testing a first path between the first data forwarding device and the second data forwarding device, and a second path between the first data forwarding device and the third data forwarding device, and (ii) including an Internet protocol (IP) datagram including a multicast IP destination address and a payload containing path testing information; and (2) sending, over the LAG, the message from the first data forwarding device to both the second data forwarding device and the third data forwarding device. Responsive to receiving an instance of the message by either of the second or third data forwarding device, such device(s) (1) determine whether or not the received instance of the message is a fault detection on a multihomed link aggregation group message, and (2) processing the received instance of the message based on the determination of whether or not it is a fault detection on a multihomed link aggregation group message.

The present invention relates to a routing processing method and device, which are used for a first VTEP device in a multi-homing network, and a first host simultaneously accesses the first VTEP device and the second VTEP device in the multi-homing network, including: Receive the first MAC / IP notification route sent by the second VTEP device; traverse all AC ports associated with the VXLAN identifier in the first VTEP device, and search for all AC ports associated with the VXLAN identifier A second AC port matching the private network identifier and the ESI; when the second AC port is found, a forwarding entry corresponding to the first host is generated according to the second AC port. By generating forwarding entries according to the second AC interface, the routing processing method and device according to the embodiments of the present invention can avoid detour of remote traffic between VTEP devices in the EVPN multi-homing system.

This invention discloses a method for selecting homing user servers of IP multimedia subsystem automatically, which sets interfaces between a user locating function device and multiple homing user servers, and the user locating functional device enquires the state of the multiple homing user servers periodically and updates records, a call session control functional device enquires information ofthe servers to the user locating function device, which selects one available server and feeds back the information to the call session control function device based on recorded state of the multipleservers, when a HSS is faulty, SLR can identify it timely and switches the access path of CSCF to a disaster recovery backup corresponding to the faulty HSS automatically by SLF side so as to guarantee correctness of business.

The invention provides a state control method, a state control device, and a message transmission method, and relates to the communication technology field. The state control method is used for VXLANTunnel End Point VTEP. The state control method comprises steps that a first protocol message is configured on an interface corresponding to the VTEP, and the first protocol message comprises block priority corresponding to an access circuit AC bonded with the interface and a network identification corresponding to VSI of the AC; the first protocol message is transmitted from the AC, and a secondprotocol message transmitted by other VTEP; whether the network identification in the second protocol message is matched with the network identification of the first protocol message is determined, when yes, and the blocking priority in the second protocol message is higher than the blocking priority in the first protocol message, and the working state of the AC is set as a blocking state. By adopting the technical scheme provided by the invention, the convenient control over the AC working state corresponding to the VTEP is realized, and therefore reliability of data message transmission is guaranteed.

The solution comprises: setting a smart home location register (SHLR) in next generation network (NGN), which is for use in storing gateway data and subscriber data; multi soft-switch addresses can be set up on the gateway; when network runs, if one soft-switch failures, the gateway initiates a registration to another soft-switch that enquires the gateway information on SHLR; the SHLR authenticates the gateway; if the authentication passes, the SHLR returns the gateway data to the soft-switch, and the soft-switch returns the message of successful registration to the soft-switch; after the gateway makes successful registration, the soft-switch updates the registration state of the gateway on the SHLR; the SHLR saves the registration state of the gate way and its registered soft-switch ID.

The present invention provides a method and device for implementing multi-homing of a location identifier separation protocol. The method includes: establishing a communication connection with other multi-homing XTRs in the same multi-homing XTR set; The terminal identifies the EID state, and the EID state includes the reachable or unreachable state of the routing location RLOC to the EID network segment; when receiving the location request message for the target EID, according to the multiple Attribute the EID status of the XTR, determine the target RLOC address that can reach the target EID, and return a response message carrying the target RLOC address to the location requesting device. Applying the embodiment of the present invention can avoid message sending failure caused by returning the RLOC address of the unreachable target EID to the location requesting device.

The present application provides a packet forwarding method and device. The method includes: when receiving a first route advertisement message sent by a second edge device, obtaining the address information of the host from the first route advertisement message, the host The inner label and the outer label of the first message sent to the second edge device; if it is determined that there is an AC matching the inner label and the outer label in this device, a first forwarding entry is generated; wherein , the first forwarding entry includes the address information of the host, the inner label, and the outer label, and the outbound interface of the first forwarding entry is the AC; using the first forwarding The publication item forwards the second message to the host. Through the technical solution of this application, after the first edge device receives a message destined for the host, it can use the forwarding table item to forward the message to the host, so that the message can be transmitted correctly, improve reliability and security, and enable multiple The home access service supports double-layer VLAN tags.