Huaimo Chen

US Patent:

8064447, Nov 22, 2011

Filed:

Mar 13, 2009

Appl. No.:

12/404100

Inventors:

Huaimo Chen - Bolton MA, US
Qianglin Quintin Zhao - Boxborough MA, US
Hua Autumn Liu - Boxborough MA, US

Assignee:

Futurewei Technologies, Inc. - Plano TX

International Classification:

H04L 12/28
H04L 12/56
H04L 12/26
H04L 12/46

US Classification:

370390, 370228, 370236, 370255, 370389, 370397, 37039553, 370396, 370399, 370401, 370408

Abstract:

An apparatus comprising a path computation element (PCE) configured to communicate with a path computation client (PCC) and compute a point-to-multipoint (P2MP) path across an autonomous system (AS) domain. Also included is a network component comprising at least one processor configured to implement a method comprising obtaining a computation request for a P2MP path across a plurality of AS domains, attempting to calculate the P2MP path across the AS domains, thereby generating a computed path or a failure reason, and transmitting a reply comprising the computed path or an indication of the failure reason. Included is a method comprising exchanging a request message and a reply message about a P2MP path across an AS domain between a PCC and a PCE.

US Patent:

8223669, Jul 17, 2012

Filed:

Mar 30, 2009

Appl. No.:

12/414331

Inventors:

Huaimo Chen - Bolton MA, US
Qianglin Quintin Zhao - Boxborough MA, US
Raveendra Torvi - Nashua NH, US
Hua Autumn Liu - Boxborough MA, US

Assignee:

Futurewei Technologies, Inc. - Plano TX

International Classification:

G01R 31/08
H04J 1/16
H04L 12/26
H04L 12/56

US Classification:

370254, 370392

Abstract:

A network component comprising at least one processor configured to implement a method comprising receiving a packet, determining whether the packet comprises a topology label, and adding the topology label to the packet if the packet does not comprise the topology label. Included is a method comprising routing a plurality of packets corresponding to a plurality of forwarding equivalence classes (FECs) over a plurality of network topologies using a topology label and plurality of forwarding labels for each network topology. Also included is a network comprising a plurality of nodes in communication with each other and having a plurality of network topologies, wherein at least some of the nodes are configured to route data packets for a plurality of FECs along a path in each network topology using a topology label corresponding to each network topology and an inner label corresponding to each FEC.

US Patent:

8243625, Aug 14, 2012

Filed:

Apr 29, 2009

Appl. No.:

12/432103

Inventors:

Huaimo Chen - Bolton MA, US
Qianglin Q. Zhao - Boxborough MA, US
Hua A. Liu - Boxborough MA, US

Assignee:

FutureWei Technologies, Inc. - Plano TX

International Classification:

H04L 12/28

US Classification:

370255, 370466, 3703955, 370392

Abstract:

System and method for support multiple topology in Label Distribution Protocol of Multi-Protocol Label Switching (MPLS) network are disclosed. The system includes a number of network elements and a communication mechanism used to connect the network elements. The network elements discover LDP peers within the network topology, and create and maintain LDP sessions for each of the network topologies. The network elements further establish LSPs by mapping network layer routing information within each network topology to data link layer switches paths. Furthermore, the communication mechanism enables the network elements to advertise the multi-topology capability and exchange the mapping information of label and FECs within each network topology.

US Patent:

8351418, Jan 8, 2013

Filed:

Feb 18, 2010

Appl. No.:

12/708048

Inventors:

Qianglin Quintin Zhao - Boxborough MA, US
Huaimo Chen - Bolton MA, US

Assignee:

Futurewei Technologies, Inc. - Plano TX

International Classification:

H04L 12/28

US Classification:

370351, 370401

Abstract:

A system comprising a plurality of path computation elements (PCEs) configured to communicate with an ingress node, jointly compute a core tree for an inter-domain point-to-multipoint (P2MP) tree across a plurality of network domains, and independently compute a plurality of sub-trees in at least some of the network domains, wherein the core tree connects the ingress node to a boundary node (BN) in each one of the network domains that have a destination node and each sub-tree connects the BN to a plurality of destination nodes in one of the network domains that have a destination node.

US Patent:

8483049, Jul 9, 2013

Filed:

Jul 1, 2010

Appl. No.:

12/829315

Inventors:

Huaimo Chen - Bolton MA, US
Qianglin Quintin Zhao - Boxborough MA, US

Assignee:

FutureWei Technologies, Inc. - Plano TX

International Classification:

H04L 1/00
G06F 11/16

US Classification:

370219, 370220, 714 13

Abstract:

A system and method for communications system routing component level high availability are provided. A method for providing routing component level high availability includes synchronizing information from an active information source, detecting a failure in a routing component, replacing the failed routing component with a backup routing component, and completing synchronization of the information.

US Patent:

8045545, Oct 25, 2011

Filed:

Nov 5, 2008

Appl. No.:

12/265299

Inventors:

Huaimo Chen - Bolton MA, US

Assignee:

FutureWei Technologies, Inc. - Plano TX

International Classification:

H04L 12/50
H04Q 11/00

US Classification:

370360, 370471

Abstract:

The present invention relates to systems and methods for eliminating unnecessary link state database exchanges and processes when two OSPF routers are forming a full adjacency. In particular, the invention provides methods and mechanisms for deducing information about unreachable routers from link state changes received, recording the information about the unreachable routers for a given period of time, constructing a neighbor database summary list that does not contain the LSAs that the neighbor has through using the information about the unreachable routers and reachable routers, and determining whether the neighbor router is restarted after it becomes unreachable. In addition, the present invention provides a few of options to deduce and use the information about the unreachable routers and the information in the link state database for eliminating unnecessary link state database exchanges and processes.

US Patent:

20080159325, Jul 3, 2008

Filed:

Dec 21, 2007

Appl. No.:

11/963717

Inventors:

Huaimo Chen - Bolton MA, US
Steve Yao - Plano TX, US

Assignee:

FutureWei Technologies, Inc. - Plano TX

International Classification:

H04J 3/26

US Classification:

370432

Abstract:

The present invention provides a system and method for TCP High Availability. The system concurrently delivers incoming data streams to AMB and SMB, concurrently sends outgoing data streams originated from AMB to SMB and peer routers, synchronizes the incoming and outgoing data streams between AMB and SMB, and accelerates the synchronizations of the incoming and outgoing data streams between AMB and SMB.

US Patent:

20080163248, Jul 3, 2008

Filed:

Oct 15, 2007

Appl. No.:

11/872508

Inventors:

Huaimo Chen - Bolton MA, US

Assignee:

Futurewei Technologies, Inc. - Plano TX

International Classification:

G06F 9/44

US Classification:

719313

Abstract:

System and method for completeness of transmission control protocol (TCP) high availability (HA) are disclosed. The system includes an active processor, having an application and a TCP, and a standby processor, having another application and another TCP; wherein communications among the active application, the active TCP, the standby application and the standby TCP quickly and efficiently enable the system seamlessly switching over from the active processor to the standby processor for transmission of incoming TCP data streams and outgoing TCP data streams if the active processor fails.