Method and device for constructing switched network spanning tree

A switching network and construction technology, applied in the direction of data switching network, digital transmission system, electrical components, etc., can solve problems such as limited CPU and memory performance of network equipment, high requirements for CPU and memory performance, and affecting network deployment capabilities. , to achieve the effect of speeding up the convergence speed, improving deployment capabilities, and reducing requirements

Active Publication Date: 2013-11-06
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] As can be seen from the above introduction to the RSTP protocol, the existing method for constructing a spanning tree needs to run multiple RSTP instances on each network device, which requires high CPU and memory performance of the network device; however, the network device CPU And the memory performance is very limited, so it will affect the network deployment ability of the network
Moreover, because each network device needs to exchange RSTP packets, this makes the network convergence slow

Method used

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  • Method and device for constructing switched network spanning tree
  • Method and device for constructing switched network spanning tree
  • Method and device for constructing switched network spanning tree

Examples

Experimental program
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Embodiment 1

[0046] Such as figure 2 It is a schematic diagram of the structure of a layer-2 switching network applied in Embodiment 1. The network includes a controller, bridge 1, bridge 2, bridge 3, bridge 4 and bridge 5, and the RSTP process runs on the controller. Through pre-configuration, set Bridge 1, Bridge 2, Bridge 3, and Bridge 4 as intra-domain bridges, and bridge 5 as an extra-domain bridge; the links between the intra-domain bridges are intra-domain links, and the rest of the links are extra-domain link (for clarity, figure 1 A dotted line is used to indicate an external link), the port on the intra-domain bridge connected to the intra-domain link is the intra-domain link port, and the port connected to the external link is the external link port; the intra-domain link does not transmit RSTP packets, and the external link is normal Transmit RSTP packets. There is a control channel (not shown in the figure) between the intra-domain bridge and the controller. The control cha...

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Abstract

The invention discloses a method and a device for constructing a switched network spanning tree. The method comprises that: a controller receives topological information and physical state information from each region bridge by a control channel, performs rapid spanning tree protocol (RSTP) calculation according to the information, and transmits calculation results to each region bridge by the control channel, wherein the region bridge is incapable of performing RSTP calculation. By the method and the device, the network deployment capability can be improved, and the rate of convergence is increased.

Description

technical field [0001] The invention relates to the technical field of Rapid Spanning Tree Protocol (RSTP, Rapid Spanning Tree Protocol), in particular to a method and a device for constructing a switching network spanning tree. Background technique [0002] The main application of the RSTP protocol is to avoid network loops in the LAN and solve the broadcast storm problem of the ring network. The RSTP protocol defines concepts such as Root Bridge, Root Port, Designated Port, Alternate Port, Backup Port, and Path Cost. The purpose is to construct a spanning tree of all network bridges (that is, devices in the network), so as to achieve the purpose of cutting redundant loops. To realize these functions, the bridges must exchange some information and send RSTP messages to each other. [0003] The following briefly introduces the working process of the RSTP protocol. [0004] First, the election of the root bridge is carried out. The bridge with the highest priority in the n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L12/753
Inventor 周万
Owner NEW H3C TECH CO LTD
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