| Patent application number | Description | Published |
|---|
| 20090217347 | METHOD AND NETWORK SYSTEM FOR NEGOTIATING A SECURITY CAPABILITY BETWEEN A PCC AND A PCE - A method and a network system for negotiating a security capability between a path computation client (PCC) and a path computation element (PCE) are described. The method includes the steps as follows. The PCE sends a packet carrying security policy capability information to the PCC. After receiving the packet, the PCC acquires a security policy capability supported or required by the PCE or a security policy capability supported by both of the PCE and the PCC. In various embodiments of the present invention, negotiation of PCC-PCE and PCC-PCC may be performed by sending the packet carrying the security policy capability information, thereby greatly simplifying the security policy configuration between PCC-PCE and PCE-PCE, and simplifying the complexity in PCE deployment. | 08-27-2009 |
| 20090219806 | METHOD, APPARATUS, AND SYSTEM FOR PROTECTING HEAD NODE OF POINT TO MULTIPOINT LABEL SWITCHED PATH - A method for protecting the head node of a Point to Multipoint Label Switched Path (P2MP LSP) includes: a Backup Head Node (BHN) establishes a backup LSP from the BHN to all Merge Points (MPs), where the backup LSP bypasses a Master Head Node (MHN); the MHN forwards data along an LSP already established between the MHN and the MPs; when a head node switchover condition is met, the BHN is switched to a master mode to forward data along the backup LSP established between the BHN and the MPs. A system and apparatus for protecting the head node are also provided. With the head node protection solution provided by the present disclosure, the head node is well protected and the protection mechanisms for the P2MP LSP are therefore more complete. This can further promote the scale deployment of P2MP systems. | 09-03-2009 |
| 20090274159 | METHOD AND APPARATUS FOR ADVERTISING BORDER CONNECTION INFORMATION OF AUTONOMOUS SYSTEM - A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks. | 11-05-2009 |
| 20100251037 | Method and apparatus for failure notification - A method and an apparatus for failure notification are provided. The method includes: sending, when it is detected that a failure occurs in a multicast label switch path, failure information to a downstream node of a multicast tree where a failed point locates, where the multicast label switch path is established based on a multicast label distribution protocol; and forwarding the failure information through the downstream node, where the failure information arrives at a leaf node of the multicast tree where the failed point locates. According to the method and the apparatus for failure notification of the present invention, finally, the failure information is transmitted to a leaf node. After the failure information is obtained, the leaf node may take appropriate measure to ensure the normal service and improve the reliability of the network. | 09-30-2010 |
| 20110007749 | Method and Apparatus for Advertising Border Connection Information of Autonomous System - A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks. | 01-13-2011 |
| 20110310727 | TROUBLESHOOTING METHOD AND APPARATUS - A troubleshooting method and a troubleshooting apparatus are disclosed. The troubleshooting method includes: sending a forward detection message to at least one node on a path to be detected, where the forward detection message carries information about a forward path to be detected and information about a backward path to be detected; and detecting faults according to a backward detection message returned by the at least one node. With the troubleshooting method and the troubleshooting apparatus disclosed herein, troubleshooting operations such as fault detection and fault location can be performed for the forward path and the backward path that require bidirectional path detection. | 12-22-2011 |
