32 results about "Route distinguisher" patented technology

Deployment of a hub-and-spoke (HaSP) topology virtual private network (VPN) may be facilitated by implementing a bi-directional VRF on a hub PE and using the hub PE as a hub-reflector. Route distinguishers and route targets may be used to differentiate traffic originating on the spokes from traffic originating on the hub. Using a bi-directional VRF allows a HaSP VPN to be created using a single link between the hub CE and hub PE. Allowing the hub CE to control spoke route distribution, and differentiating the direction of the flow by route target and route designator, enables the hub to control traffic between the spokes. Configuring the hub PE as a route reflector allows communication between the spokes to take place without having the CE hub inspect every piece of traffic. Optionally, other services may be provided by the hub PE as well, such as NAT, firewall, and AAA services.

A method for generating a route distinguisher for a virtual private network, the virtual private network managed by a service provider through a network management system, the method comprising: receiving a signal from a user through a graphical user interface displayed on a display screen of the network management system to select a format for the route distinguisher; receiving a signal from the user through the graphical user interface to select a policy for determining the route distinguisher; displaying an available value for the route distinguisher on the display screen, the available value determined from the policy and the format, the available value including an administrator subfield value portion and a next assigned number subfield value portion; receiving an administrator subfield value and a next assigned number subfield value from the user through the graphical user interface; and, combining the administrator subfield value and the next assigned number subfield value to generate the route distinguisher, whereby the administrator subfield value portion and the next assigned number subfield value portion of the available value suggest the administrator subfield value and the next assigned number subfield value to the user, respectively.

A management system manages multiple multi-protocol label switching (MPLS) virtual private networks (VPNs), the VPNs having overlapping IP addresses. The system includes a storage storing a file that associates a host name with an IP address and a route distinguisher. The host name corresponds to a network element within one of the customer VPNs. The system also includes a label obtaining system that obtains at least one label for the host name based upon the associated IP address and route distinguisher. The system also has a packet construction system that creates packets destined for the network element using the obtained label(s).

A method and system for automatically generating a route distinguisher for a virtual private network are disclosed. The method includes receiving a virtual private network name and rejecting the virtual private network name if the name comprises a number of bytes greater than a predefined limit. If the virtual private network name is less than the predefined limit, an algorithm is applied to automatically convert the virtual private network name to a route distinguisher for the virtual private network.

The invention provides a method and a system for providing service quality policies for different virtual private networks, which are applied in the router technical field. The method comprises the following steps that a mapping relationship between a route specifier attribute and a service quality policy of a virtual privacy network VPN is established; and a data packet route transmitted in the virtual privacy network is matched by utilization of the mapping relationship and the service quality policy is implemented according to service quality configuration information. The invention also provides the system for providing the service quality policies for the different virtual private networks, which solves bandwidth competition of the VPN, provides reliable services for high-priority VPN users, avoids loss of user resources due to network congestion and so on, does not require large-scale code modification on modules related to the VPN and the service quality QoS, and does not require additional hardware investment.

The invention discloses a method and equipment for transferring routing information, which belong to the field of communication networks. The method comprises: changing the association relationship between a route distinguisher (RD) to be transferred and a first border gateway protocol (BGP) process into the association relationship between the RD to be transferred and a second BGP process; afterthe change is accomplished, performing the graceful restart of the BGP process of neighbor equipment; receiving routing information which contains the RD to be transferred and sent by the neighbor equipment after the graceful restart of the BGP process; and forwarding the received routing information which contains the RD to be transferred to the second BGP process. In the process of transferringrouting information, the continuous service forwarding is guaranteed.

The invention discloses a routing memory optimization method and a routing memory optimization device in a dual-plane mode. The method includes constructing an RD routing table with a routing discriminator as a key, wherein the RD routing table includes a plurality of routing sub-tables, and each routing sub-table is used to store different types of routing entries; obtaining the current route, if the If the current route is a route generated by a local VRF instance, the current route is stored in a corresponding routing sub-table after setting a local generated flag bit for the current route. After the multi-dimensional sharing mechanism of the BGP routing table item in the present invention is realized, the duplication of the routing table item is reduced, not only the memory consumption of the routing table can be reduced, but also the routing processing performance of the node can be improved, and the routing sending and receiving processing performance of the BGP protocol is better. high.

The invention discloses a method and device for correcting network topology, relates to the field of information technology, and can improve the accuracy of network topology. The method includes: firstly determining the connection relationship between the three-layer interface and the subnet, then searching for the three-layer interface connected with the virtual private network routing and forwarding table VRF interface on the service provider border router PE, and connecting the VRF interface on the PE The routing identifier RD corresponding to the interface is added to the Layer 3 interface connected to the VRF interface on the PE, and then added according to the connection relationship between the Layer 3 interface and the subnet, and the Layer 3 interface connected to the VRF interface on the PE. RD, determine the subnet that needs to create a subnet copy, and create a subnet copy, and finally correct the network topology based on the connection relationship between the Layer 3 interface and the subnet, and the subnet copy. The invention is suitable for creating a copy of the subnet when a subnet is connected with multiple customer border routers, and correcting the network topology according to the created copy of the subnet.

The present invention relates to a method and network device for configuring a route distinguisher (RD). The method comprises: configuring an RD comprising type information and assignment information. The assignment information comprises administrator sub-information and allocation number sub-information, the administrator sub-information comprises a value with the length being greater than or equal to 4 bytes, and the allocation number sub-information comprises a value with the length being greater than or equal to 4 bytes. The RD configured with the type information and the assignment information may not only support massive VPN instances, but also support more application scenarios, for example, support a network using an autonomous system (AS) number of 4 bytes or support a network using an IPv6 address.

The invention discloses an LSA synchronizing method and device. The LSA synchronizing method comprises the steps that a network device traverses all interfaces in the network device, route distinguishers of neighboring network devices corresponding to the interfaces are determined, the LSDB types of the interfaces are determined, and the interfaces corresponding to the same LSDB type and the same route distinguisher are placed into the same interface set; when the network device receives an LSA from one neighboring network device through one interface in some interface set, the LSA is forbidden to be sent to the neighboring network device through other interfaces in the interface set. According to the LSA synchronizing method and device, redundant sending of the LSA can be avoided, the bandwidth occupied by synchronizing LSAs is reduced, and the network transmission burden can be reduced.