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Fault tolerant network architecture

A network and network node technology, applied in the field of systems to improve network availability, can solve problems such as increased waiting time for startup operations, inoperable interfaces, and unavailability of HA nodes.

Active Publication Date: 2006-05-10
MORGAN STANLEY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may result in startup operations and increased wait times as the fault resolves
This limitation is very noticeable when HA nodes are connected to multiple LANs, and failure of a single LAN results in unavailability of HA nodes
Furthermore, since a LAN may be treated as a single point of failure, the failure of one network device may render all interfaces on a given LAN inoperable

Method used

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Embodiment Construction

[0015] In various embodiments, the present invention proposes a fault-tolerant network architecture for increasing network availability. It should be understood that the systems and methods described below may include various other components and / or processes in actual implementations.

[0016] figure 1 One embodiment of a fault-tolerant network 10 according to aspects of the invention is shown. In this embodiment, fault-tolerant network 10 includes a first node (Node A) 110 and a second node (Node B) 120 . It should be understood that fault-tolerant network 10 may include any number of nodes in various embodiments.

[0017] Each of the nodes 110, 120 may be a server or host such as a computer or computer system for providing resources to one or more users. Generally, nodes 110 , 120 include software and hardware components for communicating with each other over network 130 . Nodes 110, 120 may be constructed and arranged to communicate using various communication and / or r...

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Abstract

A fault tolerant network architecture employs a network node including a first network interface to an addressable network. The first network interface is assigned a first network interface IP address defined by a first IP address range. The network node also includes at least one virtual IP address defined by an IP address range outside of the first IP address range. At least one virtual address is advertised to the addressable network from the first network interface, and packets addressed to the at least one virtual IP address can be routed to the first network interface.

Description

technical field [0001] The present invention generally relates to systems and methods for increasing network availability, and more particularly, to systems and methods for increasing network availability through the use of fault-tolerant network architectures. Background technique [0002] In Internet Protocol (IP) networks, reducing downtime and achieving high availability are very important. One way to achieve high availability is to share single or multiple IP addresses between two (multiple) network hosts. The operation of switching the owner of the shared IP address between hosts is called floating, and the shared IP address is called a floating IP address. Only one host can have the drift IP address at any given moment. [0003] Hosts that are configured so that their IP addresses float among them are called High Availability (HA) nodes. All HA nodes that may have drifting IP addresses form an HA cluster. Only one HA node in the HA cluster can have an IP address a...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L69/40
CPCH04L61/00H04L69/40
Inventor 安东尼·戈利亚·J·兰姆哈斯卡托马斯·施瓦茨
Owner MORGAN STANLEY
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