公开(公告)号：US09634893B2

公开(公告)日：2017-04-25

申请号：US14805273

申请日：2015-07-21

Applicant: Cisco Technology, Inc.

Inventor： Sami Boutros ,  Rex Fernando ,  Ali Sajassi ,  Dhananjaya Rao

IPC: H04L12/28 ,  H04L12/24

CPC classification number: H04L41/0806 ,  H04L12/4633 ,  H04L41/0816 ,  H04L41/0886 ,  H04L41/12 ,  H04L41/5048 ,  H04L41/5054

Abstract: In one embodiment, a network controller identifies a first sign of life for an edge device in a communication network (e.g., when the network controller receives an encapsulated workflow request for the edge device over a control plane of the communication network). The network controller further imports the encapsulated workflow request from the edge device over the control plane, determines configuration parameters for a tenant and a tenant network from the encapsulated workflow request, and transmits the configuration parameters to the edge device to provision the edge device for the tenant according to the configuration parameters.

公开(公告)号：US20250062977A1

公开(公告)日：2025-02-20

申请号：US18451724

申请日：2023-08-17

Applicant: Cisco Technology, Inc.

Inventor： Chuanfa Wang ,  Ali Sajassi

IPC: H04L45/02 ,  H04L45/74

Abstract: Techniques are described herein for resolving conflicts in role statuses assigned to a customer edge device by multiple provider edge devices in communication with that customer edge device. In embodiments, such techniques may involve receiving information about a customer edge device in communication with the first provider edge device and storing, based on the information about the customer edge device, an indication of a first role status of the customer edge device. The techniques may further involve receiving, from at least one second provider edge device in communication with the customer edge device, an advertisement message that includes a second role status of the customer edge device, comparing the first role status to the second role status, and upon determining that the first role status does not match the second role status, updating the first role status of the customer edge device.

公开(公告)号：US20240364561A1

公开(公告)日：2024-10-31

申请号：US18641898

申请日：2024-04-22

Applicant: Cisco Technology, Inc.

Inventor： Neeraj Malhotra ,  Balaji Pitta Venkatachalapathy ,  Krishnaswamy Muddenahally Ananthamurthy ,  Ali Sajassi ,  Dhananjaya Kasargod Rao

IPC: H04L12/46 ,  H04L45/00 ,  H04L45/02 ,  H04L45/50 ,  H04L45/741 ,  H04L101/622

CPC classification number: H04L12/4641 ,  H04L45/02 ,  H04L45/50 ,  H04L45/66 ,  H04L45/741 ,  H04L2101/622

Abstract: In one embodiment, a method includes receiving, by a route reflector, a subscription request from a first provider edge node in a network and generating a subscription policy for the first provider edge node. The method also includes receiving a first Ethernet Virtual Private Network (EVPN) Type 2 Route from a second provider edge node, assigning a sequence number to the first EVPN Type 2 Route, and communicating the first EVPN Type 2 Route with the sequence number to the first provider edge node. The method further includes receiving a second EVPN Type 2 Route from a third provider edge node, generating an updated sequence number in response to receiving the second EVPN Type 2 Route from the third provider edge node, and communicating the second EVPN Type 2 Route with the updated sequence number to the first provider edge node and the second provider node.

公开(公告)号：US20240348553A1

公开(公告)日：2024-10-17

申请号：US18298552

申请日：2023-04-11

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Nitin Kumar ,  Ali Sajassi ,  Swadesh Agrawal

IPC: H04L47/32 ,  H04L12/18 ,  H04L45/00 ,  H04L45/02 ,  H04L45/50

CPC classification number: H04L47/32 ,  H04L12/185 ,  H04L12/1863 ,  H04L45/026 ,  H04L45/34 ,  H04L45/50

Abstract: A system and associated methods provide solutions for reducing a volume of traffic through a multicast network attributed to repeated maintenance messages, which are required in order to maintain a multicast connection. The system configures provider edge devices to generate and send maintenance messages on behalf of members of a multicast group to establish and maintain the multicast connection and provides options for determining unknown locations of sources and/or subscribers, thereby reducing the overall volume of traffic transmitted over the multicast network.

公开(公告)号：US20240195496A1

公开(公告)日：2024-06-13

申请号：US18078882

申请日：2022-12-09

Applicant: Cisco Technology, Inc.

Inventor： Arman Rezaee ,  Ali Sajassi

IPC: H04B7/185 ,  H04W28/02

CPC classification number: H04B7/18584 ,  H04W28/0226

Abstract: Described herein are techniques for leveraging ground station computing devices for performing route planning calculations to be used in a LEO satellite network for traffic routing. Such techniques may comprise receiving, at a ground station computing device, a request to generate routing information for a satellite node over a period of time, determining, by the ground station computing device, a number of communication connections associated with at least one destination node, each communication connection of the number of communication connections associated with a portion of the period of time, selecting, by the ground station computing device, one or more communication connection of the number of communication connections to cover the period of time, populating, by the ground station computing device, the routing information with an indication of the selected at least one communication connection, and providing the routing information to the satellite node.

公开(公告)号：US20240195495A1

公开(公告)日：2024-06-13

申请号：US18078868

申请日：2022-12-09

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Arman Rezaee

IPC: H04B7/185 ,  H04B10/118

CPC classification number: H04B7/18584 ,  H04B7/18521 ,  H04B10/118

Abstract: Described herein are techniques for routing communications to a destination node within a LEO satellite network. The techniques may comprise receiving, at a satellite node in a network of satellites, a communication directed to an address for a destination satellite, determining whether the satellite node is the destination satellite, upon determining that the satellite node is the destination satellite, transmitting the communication to a ground station in communication range of the satellite node, and upon determining that the satellite node is not the destination satellite: identifying, via a local routing table, a second satellite node associated with the address for the destination satellite, and forwarding the communication to the second satellite node.

公开(公告)号：US20240056379A1

公开(公告)日：2024-02-15

申请号：US17884259

申请日：2022-08-09

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ali Sajassi ,  Nitin Kumar ,  Swadesh Agrawal ,  Anuj Budhiraja

IPC: H04L45/02 ,  H04L45/00 ,  H04L45/28

CPC classification number: H04L45/02 ,  H04L45/22 ,  H04L45/28

Abstract: A system and method for handling multicast traffic in Ethernet Virtual Private Network multi-homed networks includes receiving a first route table for a first route, determining that the first route table is associated with another peer device in the multi-home network, generating a second route table for a second route, determining a route to transmit data and the determined route is the first route or the second route based on the first preference value and the second preference value, and transmitting the data using the determined route.

公开(公告)号：US20240022548A1

公开(公告)日：2024-01-18

申请号：US17812901

申请日：2022-07-15

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Pradeep Kumar Kathail ,  Samir Thoria

IPC: H04L9/40 ,  H04L45/00

CPC classification number: H04L63/0435 ,  H04L63/029 ,  H04L45/22

Abstract: A system and method for adaptive encryption for SD-WAN includes identifying an encrypted conversational flow and determining whether a duration of the encrypted conversational flow exceeds a threshold. The method also includes selecting a header-less tunnel for the encrypted conversational flow when the duration is more than the threshold. The method further includes transmitting the encrypted conversational flow to an egress router over the selected header-less tunnel.

公开(公告)号：US20230283589A1

公开(公告)日：2023-09-07

申请号：US18172225

申请日：2023-02-21

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Samir Thoria ,  Lukas Krattiger ,  Manoj Kumar Pandey

IPC: H04L61/5053 ,  H04L9/40 ,  H04L61/5014

CPC classification number: H04L61/5053 ,  H04L63/101 ,  H04L63/0236 ,  H04L61/5014 ,  H04L2101/622

Abstract: Systems and techniques are provided for synchronizing DHCP snoop information. In some examples, a method can include, performing, by a first PE device from a plurality of PE devices, DHCP snooping of a first plurality of DHCP messages between a DHCP client and a DHCP server, wherein the plurality of PE devices is part of an ethernet segment for multihoming the DHCP client. In some aspects, the method includes determining, based on snooping the first plurality of DHCP messages, an association between an IP address corresponding to the DHCP client and a MAC address corresponding to the DHCP client. In some examples, the method includes sending, by the first PE device to at least one other PE device from the plurality of PE devices, a first route advertisement that includes the association between the IP address corresponding to the DHCP client and the MAC address corresponding to the DHCP client.

公开(公告)号：US20230208737A1

公开(公告)日：2023-06-29

申请号：US18177971

申请日：2023-03-03

Applicant: Cisco Technology, Inc.

Inventor： Satya Ranjan Mohanty ,  Mankamana Prasad Mishra ,  Ali Sajassi ,  Mrinmoy Ghosh

IPC: H04L43/0882 ,  H04L12/66 ,  H04L49/25 ,  H04L12/18 ,  H04L12/46 ,  H04L69/326

CPC classification number: H04L43/0882 ,  H04L12/66 ,  H04L49/25 ,  H04L12/18 ,  H04L12/4641 ,  H04L69/326

Abstract: In one embodiment, a method includes receiving, by a first router, data from a network component. The method also includes determining, by the first router, a first link bandwidth capacity between the first router and a host device and determining, by the first router, a first score for the first router based on the first link bandwidth capacity. The method also includes determining, by the first router, a second link bandwidth capacity between a second router and the host device and determining, by the first router, a second score for the second router based on the second link bandwidth capacity. The method further includes comparing, by the first router, at least the first score and the second score to determine a highest score and assigning, by the first router, an edge router associated with the highest score to communicate the data to the host device.