公开(公告)号：US10924434B2

公开(公告)日：2021-02-16

申请号：US16417739

申请日：2019-05-21

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Mishra ,  Krishnaswamy Ananthamurthy ,  Stig Venaas ,  Rishabh Parekh ,  Sameer Gulrajani

IPC: H04L12/26 ,  H04L12/947 ,  H04L12/753 ,  H04L12/18 ,  H04L12/703 ,  H04L12/761

Abstract: In one embodiment, a first Protocol Independent Multicast (PIM) router includes port interfaces to receive multicast traffic from a first network and forward the traffic to at least one receiver, which is in a sub-network including other PIM routers, and a routing processor configured, in response to a decision for the first PIM router to relinquish being a designated router, to generate a PIM Hello message with a first option descriptor and a first priority, the first option descriptor indicating a staggered handoff process, and send the PIM Hello message, receipt of the PIM Hello message by the other PIM routers being operative to result in a designated router election electing a new designated router, the new designated router being operative to initiate the staggered handoff process causing the first PIM router to continue forwarding traffic until the new designated router has built a multicast routing tree.

公开(公告)号：US20190273699A1

公开(公告)日：2019-09-05

申请号：US16417739

申请日：2019-05-21

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Mishra ,  Krishnaswamy Ananthamurthy ,  Stig Venaas ,  Rishabh Parekh ,  Sameer Gulrajani

IPC: H04L12/947 ,  H04L12/753 ,  H04L12/18

Abstract: In one embodiment, a first Protocol Independent Multicast (PIM) router includes port interfaces to receive multicast traffic from a first network and forward the traffic to at least one receiver, which is in a sub-network including other PIM routers, and a routing processor configured, in response to a decision for the first PIM router to relinquish being a designated router, to generate a PIM Hello message with a first option descriptor and a first priority, the first option descriptor indicating a staggered handoff process, and send the PIM Hello message, receipt of the PIM Hello message by the other PIM routers being operative to result in a designated router election electing a new designated router, the new designated router being operative to initiate the staggered handoff process causing the first PIM router to continue forwarding traffic until the new designated router has built a multicast routing tree.

公开(公告)号：US20190372898A1

公开(公告)日：2019-12-05

申请号：US15992413

申请日：2018-05-30

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Mishra ,  Jayashree Subramanian ,  Stig Venaas ,  Nitin Kumar

IPC: H04L12/803 ,  H04L12/761

Abstract: A method including receiving, at a first router of a plurality of routers, a first message from the plurality of routers. The first message includes a designated router priority and a weight for each respective router. Based on the designated router priorities, a designated router is elected and a one or more eligible group designated routers are determined. The method determines whether the first router is the designated router or the at least one eligible group designated router. If the first router is the designated router, the first router provides a second message to the remaining routers indicating the eligible group designated routers and their weights.

公开(公告)号：US10348647B2

公开(公告)日：2019-07-09

申请号：US15839886

申请日：2017-12-13

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Mishra ,  Krishnaswamy Ananthamurthy ,  Stig Venaas ,  Rishabh Parekh ,  Sameer Gulrajani

IPC: H04L12/26 ,  H04L12/947 ,  H04L12/753 ,  H04L12/18

Abstract: In one embodiment, a first Protocol Independent Multicast (PIM) router includes port interfaces to receive multicast traffic from a first network and forward the traffic to at least one receiver, which is in a sub-network including other PIM routers, and a routing processor configured, in response to a decision for the first PIM router to relinquish being a designated router, to generate a PIM Hello message with a first option descriptor and a first priority, the first option descriptor indicating a staggered handoff process, and send the PIM Hello message, receipt of the PIM Hello message by the other PIM routers being operative to result in a designated router election electing a new designated router, the new designated router being operative to initiate the staggered handoff process causing the first PIM router to continue forwarding traffic until the new designated router has built a multicast routing tree.

公开(公告)号：US11233667B2

公开(公告)日：2022-01-25

申请号：US16751201

申请日：2020-01-23

Applicant: Cisco Technology, Inc.

Inventor： Vengada Prasad Govindan ,  Aswin Kuppusami ,  Stig Venaas

IPC: H04L12/18 ,  H04L12/851

Abstract: In an aspect, an embodiment of the present disclosure is directed to network control topology that implements a centralized network controller to deterministically assign, and reassign, underlay multicast groups according to one or more policies and/or parameterized intent of the network administrator. The centralized network controller, in some embodiments, comprises a map server-map resolver controller configured to provide deterministic and centralized allocation of LISP underlay multicast groups, e.g., to provide security, traffic engineering, network and resource management.

公开(公告)号：US20210234714A1

公开(公告)日：2021-07-29

申请号：US16751201

申请日：2020-01-23

Applicant: Cisco Technology, Inc.

Inventor： Vengada Prasad Govindan ,  Aswin Kuppusami ,  Stig Venaas

IPC: H04L12/18 ,  H04L12/851

Abstract: In an aspect, an embodiment of the present disclosure is directed to network control topology that implements a centralized network controller to deterministically assign, and reassign, underlay multicast groups according to one or more policies and/or parameterized intent of the network administrator. The centralized network controller, in some embodiments, comprises a map server-map resolver controller configured to provide deterministic and centralized allocation of LISP underlay multicast groups, e.g., to provide security, traffic engineering, network and resource management.

公开(公告)号：US10826831B2

公开(公告)日：2020-11-03

申请号：US15992413

申请日：2018-05-30

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Mishra ,  Jayashree Subramanian ,  Stig Venaas ,  Nitin Kumar

IPC: H04L12/803 ,  H04L12/761

Abstract: A method including receiving, at a first router of a plurality of routers, a first message from the plurality of routers. The first message includes a designated router priority and a weight for each respective router. Based on the designated router priorities, a designated router is elected and a one or more eligible group designated routers are determined. The method determines whether the first router is the designated router or the at least one eligible group designated router. If the first router is the designated router, the first router provides a second message to the remaining routers indicating the eligible group designated routers and their weights.