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    Method and system for managing network-to-network interconnection
    1.
    发明授权
    Method and system for managing network-to-network interconnection 有权

    公开(公告)号：US11855802B2

    公开(公告)日：2023-12-26

    申请号：US18093530

    申请日：2023-01-05

    Applicant: Cisco Technology, Inc.

    Inventor： Pierre Pfister ,  William Mark Townsley ,  Yoann Desmouceaux ,  David Delano Ward

    IPC: H04L12/46 ,  G06F16/95

    CPC classification number: H04L12/46 ,  G06F16/95

    Abstract: This disclosure describes methods and systems to externally manage network-to-network interconnect configuration data in conjunction with a centralized database subsystem. An example of the methods includes receiving and storing, in the centralized database subsystem, data indicative of user intent to interconnect at least a first network and a second network. The example method further includes, based at least in part on the data indicative of user intent, determining and storing, in the centralized database subsystem, a network intent that corresponds to the user intent. The example method further includes providing data indicative of the network intent from the centralized database subsystem to a first data plane adaptor, associated with the first network, and a second data plane adaptor, associated with the second network.

    Distributed resilient load-balancing for multipath transport protocols
    2.
    发明授权
    Distributed resilient load-balancing for multipath transport protocols 有权

    公开(公告)号：US11570239B2

    公开(公告)日：2023-01-31

    申请号：US16853048

    申请日：2020-04-20

    Applicant: Cisco Technology, Inc.

    Inventor： Yoann Desmouceaux ,  Pierre Pfister ,  Aloys Augustin ,  Mohammed Hawari

    IPC: H04L67/1023 ,  H04L45/24 ,  H04L69/163 ,  H04L69/164 ,  H04L69/165 ,  H04L67/146 ,  H04L67/01

    Abstract: Techniques are described for providing a distributed application load-balancing architecture that supports multipath transport protocol for client devices connecting to an application service. Rather than having client devices generate new network five-tuples for new subflows to the application servers, the techniques described herein include shifting the burden to the application servers to ensure that the new network five-tuples land in the same bucket in the consistent hashing table. The application servers may receive a hashing function utilized by the load balancers to generate the hash of the network five-tuple. By having the application servers generate the hashes, the load balancers are able to continue stateless, low-level processing of the packets to route them to the correct application servers. In this way, additional subflows can be opened for client devices according to a multipath transport protocol while ensuring that the subflows are routed to the correct application server.

    SEGMENT ROUTING WITH FAST REROUTE FOR CONTAINER NETWORKING
    6.
    发明申请
    SEGMENT ROUTING WITH FAST REROUTE FOR CONTAINER NETWORKING 审中-公开

    公开(公告)号：US20200099610A1

    公开(公告)日：2020-03-26

    申请号：US16138595

    申请日：2018-09-21

    Applicant: Cisco Technology, Inc.

    Inventor： Giles Douglas Yorke Heron ,  Edward A. Warnicke ,  William Mark Townsley ,  Yoann Desmouceaux

    IPC: H04L12/707 ,  H04L12/715 ,  H04L12/721 ,  H04L12/725 ,  H04L29/12

    Abstract: Systems and methods provide for segment routing (SR) with fast reroute in a container network. An SR ingress can receive a packet from a first container destined for a container service. The ingress can generate an SR packet including a segment list comprising a first segment to a first container service host, a second segment to a second service host, and a third segment to the service. The ingress can forward the SR packet to a first SR egress corresponding to the first host using the first segment. The first egress can determine whether the first service and/or host is reachable. If so, the first egress can forward the SR packet to the first host or the packet to the service. If not, the first egress can perform a fast reroute and forward the SR packet to a second SR egress corresponding to the second host using the second segment.

    SYSTEM AND METHOD FOR PROVIDING A BIT INDEXED SERVICE CHAIN
    7.
    发明申请
    SYSTEM AND METHOD FOR PROVIDING A BIT INDEXED SERVICE CHAIN 审中-公开

    公开(公告)号：US20190149468A1

    公开(公告)日：2019-05-16

    申请号：US16249563

    申请日：2019-01-16

    Applicant: Cisco Technology, Inc.

    Inventor： Pierre Pfister ,  Mark Townsley ,  Yoann Desmouceaux

    IPC: H04L12/741 ,  H04L29/06

    CPC classification number: H04L45/74 ,  H04L69/22

    Abstract: Disclosed is a method that modifies a bit indexed explicit replication (BIER) algorithm. The method includes receiving a packet at a node, wherein the packet includes a BIER header identifying a bitstring, the bitstring including a first bit indicating a first destination and a second bit indicating a second destination and forwarding the packet through one or more networks toward the first destination and the second destination based on the bitstring and a predetermined bit selection order. The predetermined bit selection order causes a sequential delivery of the packet to the first destination and the second destination. After the packet arrives at the first destination, the method includes setting the first bit to zero in the bitstring and forwarding the packet through the one or more networks toward the second destination according to the updated bitstring.

    Highly-available distributed network address translation (NAT) architecture with failover solutions
    10.
    发明授权
    Highly-available distributed network address translation (NAT) architecture with failover solutions 有权

    公开(公告)号：US11436111B2

    公开(公告)日：2022-09-06

    申请号：US16592613

    申请日：2019-10-03

    Applicant: Cisco Technology, Inc.

    Inventor： Pierre Pfister ,  Ian James Wells ,  Kyle Andrew Donald Mestery ,  William Mark Townsley ,  Yoann Desmouceaux ,  Guillaume Ruty ,  Aloys Augustin

    IPC: G06F11/20 ,  G06F9/455 ,  H04L61/2503 ,  H04L61/58

    Abstract: This disclosure describes techniques for providing a distributed scalable architecture for Network Address Translation (NAT) systems with high availability and mitigations for flow breakage during failover events. The NAT servers may include functionality to serve as fast-path servers and/or slow-path servers. A fast-path server may include a NAT worker that includes a cache of NAT mappings to perform stateful network address translation and to forward packets with minimal latency. A slow-path server may include a mapping server that creates new NAT mappings, depreciates old ones, and answers NAT worker state requests. The NAT system may use virtual mapping servers (VMSs) running on primary physical servers with state duplicated VMSs on different physical failover servers. Additionally, the NAT servers may implement failover solutions for dynamically allocated routable address/port pairs assigned to new sessions by assigning new outbound address/port pairs when a session starts and broadcasting pairing information.

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