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Maximum Redundancy Tree to Redundant Multicast Source Nodes for Multicast Protection

A node and redundant technology, applied in the field of computer networks, can solve problems affecting Internet voice and so on

Active Publication Date: 2020-11-20
JUMIPER NETWORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some deployments take around 500 milliseconds to several seconds to detect and recover from failures in the network
These large convergence times can adversely affect the performance of Voice over Internet Protocol (VoIP) and multimedia applications, which are extremely sensitive to traffic loss

Method used

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  • Maximum Redundancy Tree to Redundant Multicast Source Nodes for Multicast Protection
  • Maximum Redundancy Tree to Redundant Multicast Source Nodes for Multicast Protection
  • Maximum Redundancy Tree to Redundant Multicast Source Nodes for Multicast Protection

Examples

Experimental program
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Embodiment Construction

[0020] Figures 1A to 1Bis a block diagram illustrating a system 10 including an example network 4 having network devices 12A through 12H (shown and alternatively described herein as "nodes 12") in accordance with the techniques of this disclosure. Each node 12 may be a router, or may be another network device that includes routing capabilities. Nodes 12 use link-state routing protocols, such as Open Shortest Path First (OSPF), Intermediate System-to-Intermediate System (IS-IS), Routing Information Protocol (RIP), and Enhanced Interior Gateway Routing Protocol (EIGRP), to communicate via routing protocol messages to exchange routing information to understand the topology of the network 14. The routing protocol may be referred to as an Interior Gateway Protocol (IGP). The ingress node 12H outputs a route advertisement, which conforms to the routing protocol and indicates the reachability of the IP address N1 of the multicast source 14A from the ingress node 12H. The ingress n...

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Abstract

In general, techniques are described for enabling a network of network devices (or "nodes") to provide redundant multicast streams from redundant multicast sources to egress network nodes. In some examples, the egress network node (or the controller for the network) computes a maximum redundancy tree (MRT) from the egress network node to a virtual proxy node, which is virtually added to the network topology by the egress network node, using Redundant multicast sources for redundant multicast streams.

Description

technical field [0001] The present disclosure relates to computer networks, and more particularly, to forwarding network traffic within computer networks. Background technique [0002] The protocol defines the process by which network devices called routers in a packet-switched network communicate with each other to disseminate information that allows the routers to choose a route between any two nodes on the computer network. One type of routing protocol, known as a link-state protocol, allows routers to exchange and accumulate link-state information, ie, information describing the various links within the network. With typical link-state routing protocols, routers exchange information about available interfaces, metrics, and other variables associated with network links. This allows the router to construct its own topology or map to the network. Some examples of link state protocols include the Open Shortest Path First (OSPF) protocol and the Intermediate System-to-Inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/753H04L12/761H04L12/711H04L45/128H04L45/16H04L45/24H04L45/247
CPCH04L45/16H04L45/22H04L12/1877H04L45/128H04L45/484H04L12/18H04L12/185H04L45/00H04L65/611H04L12/40176H04L12/44H04L45/12H04W40/026
Inventor R·W·基布勒V·纳加拉简
Owner JUMIPER NETWORKS INC