公开(公告)号：US20240031275A1

公开(公告)日：2024-01-25

申请号：US18091824

申请日：2022-12-30

Applicant: Cisco Technology, Inc.

Inventor： Alfred Clarence Lindem III ,  Peter Psenak ,  Lester C. Ginsberg

IPC: H04L45/122 ,  H04L45/00 ,  H04L45/02

CPC classification number: H04L45/122 ,  H04L45/20 ,  H04L45/02

Abstract: Techniques are described for providing a method and apparatus for determining source address validation of a data packet in a network in the presence of asymmetric routing. When a data packet is received by a node such as a router, a reverse path forwarding lookup is performed to determine if the data packet was received on a next-hop interface and if the reverse path forwarding fails, a Shortest Path First (SPF) computation at the router advertising the source route will be performed using the link state database to determine whether the data packet arrived from a valid path of the network.

公开(公告)号：US20200287737A1

公开(公告)日：2020-09-10

申请号：US16293447

申请日：2019-03-05

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ali Sajassi ,  Samir Thoria ,  Ijsbrand Wijnands ,  Lester C. Ginsberg

IPC: H04L12/18 ,  H04L12/46 ,  H04L12/801 ,  H04L12/721 ,  H04L12/751

Abstract: Systems, methods, and computer-readable media for controlling multicast traffic flows through provider edge routers. In some examples, a multicast traffic of one or more multicast traffic flows is received from a multicast source at a first provider edge router of a plurality of provider edge routers. A multicast routing message including a loopback address of the first provider edge router can be originated at the first provider edge router. The multicast routing message can be flooded into a multicast core network for controlling traffic in the one or more multicast flows through the multicast core network to the first provider edge router. Subsequently, multicast joins can be received at the first provider edge router for establishing the one or more multicast flows through the multicast core network based on the multicast routing message including the loopback address of the first provider edge router.