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Redundancy for port extender chains

A technology of port expander and expansion bridge, which is applied in the field of redundancy of the port expander chain, and can solve problems such as unresolved unit failures

Active Publication Date: 2016-07-13
ARRIS INT IP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, relaying does not address unit failures (i.e. failures that cause the entire PE unit to shut down)

Method used

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  • Redundancy for port extender chains
  • Redundancy for port extender chains
  • Redundancy for port extender chains

Examples

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Embodiment Construction

[0016] In the following description, for purposes of explanation, several examples and details are set forth to provide an understanding of various embodiments. It will be apparent, however, to one skilled in the art that certain embodiments may be practiced without some of these details, or with modifications or equivalents of certain embodiments.

[0017] 1 Overview

[0018] Embodiments of the present invention provide techniques for implementing redundancy in an expansion bridge comprising a chain of PE units connected to a core stack of CB units. At a high level, such techniques involve physically connecting a PE chain to the core stack as a ring (rather than a non-linear sub-stack), such that one end of the PE chain is connected to a CB unit in the core stack, and the other end of the PE chain is connected to to another CB unit in the core stack. E.g, figure 2 An extension bridge 200 is depicted having CB units CB1-A, CB2-S and CB3-M and a PE chain including PE unit...

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PUM

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Abstract

Techniques implementing redundancy in an extended bridge comprising a controller bridge (CB) unit and a plurality of port extender (PE) units are provided. In one embodiment, the CB unit can receive join requests from the plurality of PE units and can determine, based on the join requests, whether the plurality of PE units are physically connected to the CB unit and / or other CB units in the extended bridge according to a ring topology. If the plurality of PE units are physically connected to the CB unit or the other CB units according to a ring topology, the CB unit can select a link in the ring topology as being a standby link.

Description

[0001] Cross References to Related Applications [0002] This application asserts U.S. Provisional Application No. 62 / 073,832, filed October 31, 2014, entitled "REDUNDANCY FORPORT EXTENDER CHAINS," and filed October 29, 2015, entitled "PORT EXTENDER CHAINS." Priority of U.S. Application No. 14 / 926,822 for Redundancy of Expander Chains (REDUNDANCYFORPORT EXTENDERCHAINS). The entire contents of such applications are hereby incorporated by reference for all purposes. Background technique [0003] As known in the art of computer networking, a stack system or stack is a group of physical network devices connected together (eg, via external cables) to act as a single logical network device. Each member network device of a stack is called a unit and includes (1) stack ports for connecting to other units in the same stack, and (2) data ports for connecting to upstream / downstream hosts and / or networks. [0004] A stacking system that supports IEEE802.1BR port expander technology (ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/08H04L12/42
CPCG06F13/4045G06F13/16G06F13/362H04J2203/0042H04L1/22H04L12/40013H04J3/085H04L12/42
Inventor 拜平·阿加瓦尔阿里吉特·巴塔查里亚钱德拉·科纳塔拉·普尔纳苏雷什·努鲁
Owner ARRIS INT IP LTD
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