公开(公告)号：US11388084B2

公开(公告)日：2022-07-12

申请号：US16514942

申请日：2019-07-17

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Mankamana P. Mishra ,  Samir Thoria ,  Patrice Brissette ,  Mei Zhang ,  Tapraj Singh

IPC: H04L45/00 ,  H04L12/46 ,  H04L45/16 ,  H04L45/7453 ,  H04L45/745 ,  H04L45/50 ,  H04L49/354 ,  H04L45/02 ,  H04L101/677

Abstract: Techniques for routing traffic across different virtual local area networks (VLANs) within a single bridge domain are described. One technique includes receiving at a first network device a packet from a second network device on a first interface of multiple interfaces within a bridge domain at the first network device. Attachment circuit information associated with the packet is determined. An information element that includes an indication of the attachment circuit information is generated. The information element is transmitted to the third network device.

公开(公告)号：US12074757B2

公开(公告)日：2024-08-27

申请号：US17820050

申请日：2022-08-16

Applicant: Cisco Technology, Inc.

Inventor： Mankamana P. Mishra ,  Karthik Babu Harichandra Babu ,  Nitin Kumar ,  Manoj K. Pandey

IPC: H04L41/0659 ,  H04L41/0677 ,  H04L41/12 ,  H04L43/0811 ,  H04L43/10

CPC classification number: H04L41/0677 ,  H04L41/0659 ,  H04L41/12 ,  H04L43/0811 ,  H04L43/10

Abstract: Techniques for connectivity issue remediation are provided. A first link trace message is transmitted from a source end point to a destination end point. A first topology graph for a network is generated based on the first link trace message, and a presence of a connectivity issue in the network is detected. A second link trace message is transmitted from the source end point to the destination end point. A second topology graph for the network is automatically generated based on second link trace message, and a component in the network that caused the connectivity issue is identified based on comparing the first and second topology graphs.

公开(公告)号：US11824797B1

公开(公告)日：2023-11-21

申请号：US17510982

申请日：2021-10-26

Applicant: Cisco Technology, Inc.

Inventor： Mankamana P. Mishra ,  Ali Sajassi ,  Arvind Venkateswaran ,  Jayashree Subramanian ,  Patrice Brissette ,  Satya Ranjan Mohanty

IPC: H04L49/201 ,  H04L49/354 ,  H04L61/103 ,  H04L45/24 ,  H04L45/00

CPC classification number: H04L49/201 ,  H04L45/20 ,  H04L45/24 ,  H04L49/354 ,  H04L61/103

Abstract: At a provider edge (PE) router of PE routers of an Ethernet virtual private network (EVPN) configured to implement a border gateway protocol (BGP): receiving, from a multicast receiver, a multicast join for multicast traffic originated from a multicast source; identifying a next hop PE router for the multicast source; generating an EVPN route to the PE router, the EVPN route including an EVPN instance-route target that identifies the EVPN, and a specifically targeted route target that identifies the next hop PE router and that is configured to override the EVPN instance-route target to cause only the next hop PE router, and not any other of the PE routers, to import the EVPN route, when the EVPN route is advertised across the EVPN to the PE routers; and advertising the EVPN route across the EVPN to the PE routers.

公开(公告)号：US11438220B2

公开(公告)日：2022-09-06

申请号：US17248547

申请日：2021-01-28

Applicant: Cisco Technology, Inc.

Inventor： Mankamana P. Mishra ,  Karthik Babu Harichandra Babu ,  Nitin Kumar ,  Manoj K. Pandey

IPC: H04L41/0659 ,  H04L41/0677 ,  H04L43/10 ,  H04L43/0811 ,  H04L41/12

Abstract: Techniques for connectivity issue remediation are provided. A first link trace message is automatically transmitted from a source end point to a destination end point. A first topology graph is generated for a network based on the first link trace message. Presence of a loop is detected in the network. A second link trace message is then transmitted from the source end point to the destination end point, and a second topology graph is automatically generated for the network based on the second link trace message. An edge in the network that caused the loop is identified based on comparing the first and second topology graphs.