Method, system and controlling bridge for acquiring port extension topology information

A technology of port expansion and topology information, applied in the field of data communication

Inactive Publication Date: 2012-11-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method and system for obtaining port extension topology information, a control bridge and a processing method and s

Method used

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  • Method, system and controlling bridge for acquiring port extension topology information
  • Method, system and controlling bridge for acquiring port extension topology information
  • Method, system and controlling bridge for acquiring port extension topology information

Examples

Experimental program
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Embodiment 1

[0073] In this embodiment, the process of obtaining PE topology information will be specifically introduced.

[0074] Such as figure 2 As shown, it is a schematic diagram of an embodiment of the topology of CB and PE in the present invention. The connection relationship between the control bridge and PE is: PE1 is directly connected to the CB, and PE2 and PE3 are both connected to the CB after being cascaded through PE1. pass below image 3 To specifically explain the process of the CB obtaining the entire topology information of the PE, and the creation of the E-channel by the CB, the process includes:

[0075] Step 301, CB sends Link Layer Discovery Protocol (LLDP) message through the port connected with PE1;

[0076] Step 302, PE1 receives the LLDP message, sets the port receiving the message as the uplink port, obtains the address of the CB, and sends the LLDP message to the CB from the uplink port;

[0077] Step 303, CB obtains the address of PE1 after receiving the L...

Embodiment 2

[0088] Such as Figure 4 As shown, it is a schematic diagram of the topology structure before the uplink port of the PE in the embodiment of the present invention changes. PE1 is connected to the control bridge CB by two ports: port 1 and port 5 . Therefore, the CB will send an LLDP message to PE1 through these two ports, and the message carries the priorities assigned to these two ports (cascade port priority). After port 1 and port 5 of PE1 respectively receive LLDP, by comparing their respective cascade port priorities, one of the ports is selected as its uplink port. In this embodiment, PE1 selects port 1 as the uplink port of PE1 (the uplink port of port 1 The cascade port priority is higher than the cascade port priority of port 5), so PE1 sends LLDP packets to CB through port 1, so CB perceives PE1, and thus establishes E-channels from CB to other extended ports 2, 3, and 4 of PE1 , the steps are similar to those in Embodiment 1, and will not be repeated here.

[0089...

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PUM

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Abstract

The invention provides a method, a system and a controlling bridge for acquiring port extension (PE) topology information, as well as a method and a system for handling an upstream port, wherein the method for acquiring the PE topology information comprises the following steps that a controlling bridge (CB) receives a link layer discovery protocol (LLDP) message sent by the PE and senses the own connection to the PE; the CB receives an extended port create message sent by the PE, and exemplifies the corresponding exemplified port in the CB. With the adoption of the technical scheme provided by the invention, the topology information of the PE connected with the CB can be effectively obtained, and a channel used for transferring data can be established.

Description

technical field [0001] The invention relates to data communication technology, in particular to a method and system for acquiring port extended topology information, a control bridge and an uplink port processing method and system. Background technique [0002] A unified data center fabric is a network fabric that combines traditional local area network (LAN) and storage area network (SAN) traffic within the same physical network to reduce architectural complexity and enhance data flow and access. To be effective, traditional Ethernet must be upgraded to be "lossless" and provide additional data center networking features and functions. Therefore, the storage protocol must be adapted to run on Ethernet (Ethernet). [0003] The Institute of Electrical and Electronics Engineers (IEEE) has defined the term Data Center Bridging (DCB), which is an architectural collection of Ethernet extensions designed to improve Ethernet and data center management. DCB is also known as Conver...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L45/02H04L45/16H04L45/74
CPCH04L41/12H04L12/56H04L45/10Y02B60/43Y02D30/00H04L45/02H04L45/745H04L49/201H04L45/302H04L45/16H04L12/4625H04L2101/622
Inventor 敖婷魏月华喻敬海李琳
Owner ZTE CORP
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