Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Retention of a stack address during primary master failover

A stack and host technology, applied in the management field of the stack switch system, can solve problems such as impact troubles, temporary link interruptions, etc.

Inactive Publication Date: 2007-03-28
ALCATEL LUCENT SAS
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also results in a temporary outage of the link
The effect is also very troublesome when there are multiple primary to secondary failovers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Retention of a stack address during primary master failover
  • Retention of a stack address during primary master failover
  • Retention of a stack address during primary master failover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The following detailed description illustrates the present invention by way of examples to enable those skilled in the art to clearly implement and use the present invention, without limiting the principles of the present invention, and describes various embodiments, modifications, variations, substitutions and Uses of the invention include embodiments believed to be the best modes presently carried out for carrying out the invention.

[0029]In order to better understand the drawings, in the following description, the same numbered reference numerals are used in each figure and description to identify the same or similar structures, actions, operations or processing steps. In addition, reference numerals in the one-hundred series, such as 102 and 104, are first introduced in FIG. 1, reference numerals in the two-hundred series are first introduced in FIG. 2, such as 222 and 224, and so on. Thus, in FIG. 9 the reference numerals within the sequence of nine hundred, for ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention features embodiments of alleviating the impact to a system of stack switches, as well as to neighboring nodes communicating with such a system, when a primary master switch to secondary master switch failover occurs. The features of the present invention, generally enables a system of stack switches to retain, for a fixed or indefinite period of time, its stack address even when multiple primary master to secondary master failovers occur. This way recalculation of certain protocols - e.g., spanning trees and link aggregations - and updating of certain tables - e.g., address resolution protocol (ARP) and routing tables - are minimized.

Description

technical field [0001] The present invention generally relates to the management of stacked switch systems within a data communications network. More particularly, the present invention relates to a fault-tolerant stacked switch system adapted to detect, handle and recover from switch failures without requiring changes to the stacked media access control (MAC) addresses of the stacked switch system. Background technique [0002] Stackable switches are switches or routers that can work in standalone mode or in a stack. These stackable switches, referred to herein as switches, are coupled into a single logical unit called a stack. The switches are operatively interconnected through a pair of designated stacking ports present on each switch. Stacked switch systems are typically coupled in series, the topology of which is typically characterized by closed loops called rings or open links of switches referred to herein as chains. Each stacked switch is adapted to perform switc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L12/24H04L29/12
CPCH04L49/557H04L49/351H04L49/352H04L45/00H04L45/583H04L45/60
Inventor 文森特·马格雷特劳伦斯·罗斯
Owner ALCATEL LUCENT SAS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com