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Method for aggregated link rapid convergence of distributed switch

A technology for fast convergence and link aggregation, applied in the communication field, it can solve problems such as time consumption and inability to meet the requirements of carrier-class equipment, and achieve the effect of reducing lost reports, ensuring reliable protection, and satisfying fast convergence.

Active Publication Date: 2012-04-11
北京神州数码云科信息技术有限公司
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Problems solved by technology

[0004] Although the method described above can meet the requirements of link switching, the switching time is about several hundred milliseconds, which provides a guarantee for reliable communication between switches, but for carrier-grade equipment, the switching time is required to be no higher than 50ms, so this This method is far from meeting the requirements of carrier-grade equipment
In addition, the above method spends most of the time on the processing of the protocol stack module and the interaction process between the service board and the main control board

Method used

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  • Method for aggregated link rapid convergence of distributed switch
  • Method for aggregated link rapid convergence of distributed switch
  • Method for aggregated link rapid convergence of distributed switch

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments of the specification.

[0028] Such as figure 1 As shown, two distributed switches are connected through multiple physical links and aggregated:

[0029] figure 1 In the above, S1 is called the aggregated local device, S2 is called the aggregated peer device, and the corresponding ports are called the local port and the peer port. Among them, the first two ports of S1 are on the same service board, and the last two ports are distributed on different service boards (the non-aggregated ports are not shown); the four ports of S2 are distributed on different service boards On the card, these four physical links are aggregated into one logical link. In the figure, S1 is called the aggregated local device, S2 is the aggregated peer device, and the corresponding ports are the local port and the peer port.

[0030] Such as figure 2 As shown, the processing f...

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Abstract

The invention discloses a method for realizing fast convergence of an aggregated link of a distributed switch, which comprises the following steps that: 1, a member port link is down and produces fast interruption; 2, the member port link sends a message through a drive to notify service boards where other member ports are positioned during the interruption, a board where the member port is positioned is directly provided with a switching chip, the port is deleted from the aggregation, and then an aggregation protocol module is notified for processing; 3, after other boards receive the message, the boards are provided with switching chips, and thus one aggregated member port is absent; and 4, after a phy chip of aggregation peer-to-peer equipment cannot receive a port signal, the port link is down, and the operations in step 1, 2 and 3 can be repeated. The method can quickly delete member ports which are down from the aggregation, reduces the message loss of links, and realizes the fast convergence of the links. The method can shorten the convergence time within 22ms, meets the requirement of fast convergence of telecom-level equipment, and provides more reliable guarantee for telecom-level service.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for realizing fast convergence of aggregated links of a distributed switch. Background technique [0002] In switches, link aggregation is a technology that increases link bandwidth and improves reliable communication between devices. It is a logical abstraction process that abstracts a group of physical ports with the same attributes into a logical port; the bandwidth of the logical link is the sum of the bandwidth of each physical link; it can be connected between different switches Multiple virtual local area networks (VLANs), which can extend VLANs to the entire network; link aggregation (Trunk) can bind any related ports, and can also be canceled at any time, which provides high flexibility; Trunk can provide load balancing capabilities And system fault tolerance, because Trunk balances the traffic of each switch port and server interface in real time, once a port fails, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/46H04L47/41
Inventor 陈振光何庆宁
Owner 北京神州数码云科信息技术有限公司
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