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Network equipment overload protection method, overload protection function testing method and system

A technology for network equipment and functional testing, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as dependence on large external resources, failure to successfully construct overload scenarios, random packet discarding, etc., and achieve the effect of saving external resources

Active Publication Date: 2020-09-29
MAIPU COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The technical problem to be solved by the present invention is: to propose a network equipment overload protection method, overload protection function testing method and system, to solve the problem of random discarding of packets after limiting overload in the overload protection scheme of traditional technology, and to verify The problem of not being able to successfully construct overloaded scenarios or relying on a large number of external resources

Method used

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  • Network equipment overload protection method, overload protection function testing method and system
  • Network equipment overload protection method, overload protection function testing method and system
  • Network equipment overload protection method, overload protection function testing method and system

Examples

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Embodiment 1

[0076] In the embodiment of the present invention, an example is used to verify that multicast data packets are discarded prior to unicast data packets. First, an overload scenario needs to be set up (taking a network device with a full load of 300MPPS as an example), such as Figure 4 Shown:

[0077] 1) In order to use fewer ports and low-end testers, the method of creating logical ports and virtual output queues (a large number of logical ports are abstracted from physical ports, and each logical port corresponds to a virtual output queue) is adopted. But does not rely on virtual output queues to limit overloading.

[0078] 2) Taking the calculation of a 64-byte 1Gbps unicast and a 64-byte 1Gbps multicast incoming packet as an example, calculate the minimum number of copies that need to be copied for a multicast data packet:

[0079] The packet length is 64 bytes, the frame preamble length is 8 bytes, and the frame interval is 12 bytes, so the actual rate of each data packe...

Embodiment 2

[0085] The embodiment of the present invention is illustrated by taking the priority of multicast low-priority data packets over multicast high-priority data packets as an example. First, an overload scenario needs to be set up (taking a network device with a full load of 300MPPS as an example), such as Figure 5 Shown:

[0086] 1) In order to use fewer ports and low-end testers, the method of creating logical ports and virtual output queues is adopted, that is, by abstracting a large number of logical ports in the physical ports, each logical port corresponds to a virtual output queues, but does not rely on virtual output queues to limit overloading.

[0087] 2) Taking the calculation of two 64-byte 0.5Gbps multicast packets as an example, calculate the minimum number of copies that need to be copied for multicast:

[0088] The packet length is 64 bytes, the frame preamble length is 8 bytes, and the frame interval is 12 bytes, so the actual rate of the two incoming packets =...

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Abstract

The invention relates to the overload protection technology in the field of data communication, which discloses an overload protection method for network equipment, which solves the problem of random discarding of packets after limiting overload in the overload protection scheme of the traditional technology, and fails to succeed in overload verification Problems with constructing overloaded scenarios or relying on a large number of external resources. It includes: when the network device enters the overload protection, the newly arrived data packets are discarded according to the type and priority order of the data packets: multicast data packets are discarded prior to unicast data packets, low priority multicast data packets Multicast packets prior to higher priority are discarded. In addition, the invention also discloses a network equipment overload protection testing system and method, which are suitable for testing the network equipment overload protection performance.

Description

technical field [0001] The invention relates to an overload protection technology in the field of data communication, in particular to a network device overload protection method, an overload protection function testing method and a system. Background technique [0002] With the rapid development of communication technology, the dramatic increase in communication traffic leads to the need for high-performance and high-capacity switching chips. Taking switching and routing equipment as an example, due to the increase in people's demand for data volume, such as digital TV on demand, Internet access, etc., the bandwidth requirements provided by switches and routers are also getting higher and higher. This requires efforts to increase the performance and capacity of the core device hardware. When an emergency occurs and the data packets exceed the maximum processing capacity of the network equipment, overload protection is required. There are mainly two overload protection sche...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/823H04L12/851H04L47/32
Inventor 陈旭峰杨大川
Owner MAIPU COMM TECH CO LTD
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