JPS62140537A - Measuring method for network delay time - Google Patents

Abstract

PURPOSE:To automatically measure a network delay time by transmitting a network delay time measuring packet from a measuring station to a station to be measured. CONSTITUTION:When a measuring station 1 instructs the measurement of a network delay time to a station to be measured 2 from a KDP 11, the measuring station 1 sets a delay time measuring logical path to the station to be measured 2, and when it is detected that the delay time measuring logical path is set from the measuring station 1, the station to be measured 2 prepares itself for the reception of a delay time measuring packet. The measuring station 1 transmits the delay time measuring packet by the delay time measuring logical path. In this case, the transmission time is stored in an MM 12. When the delay time measuring packet is received, the station to be measured 2 sends it back as it is to the measuring station. The measuring station 1 receives the delay time measuring packet sent back from the station to be measured 2, derives the received time and calculates a difference against the transmission time stored on the MM 12, and stores it as the network delay time, in a store area on the MM 12. The measuring station 1 repeats the operation until the instruction for the end is received from the KDP 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for measuring intra-network delay time in a packet-switched network using electronic exchanges.

[Conventional technology]

Conventionally, when measuring network delay time, a measuring device was connected to the line between the measuring station and the station under test, and the measurement was performed manually.

[Problem that the invention seeks to solve]

The conventional intra-network delay time measurement method described above requires a human to connect the measuring device to the line and operate the measuring device each time a measurement is made, making it difficult to measure the intra-network delay time between multiple stations. The disadvantage is that it requires a lot of work.

[Means for solving problems]

In order to eliminate such drawbacks, the present invention provides a method for measuring delay time within a packet switching network using electronic exchanges, in which an arbitrary switching center is designated and the delay time between the switching center and that switch is automatically measured. It is something.

[Effect]

In the present invention, intra-network delay time can be automatically measured.

〔Example〕

A measurement system for explaining an embodiment of the intra-network delay time measurement method according to the present invention is shown in the figure. In the figure, 1 is a measurement station, 2 is a station to be measured, 11 is a Geebaud display (hereinafter referred to as rKDPJ), 12.22 is a main memory (hereinafter referred to as rMMj), and 13.23 is a data communication equipment (DCE). .

Next, the operation of the measurement system shown in the figure will be explained.

(2) When the measuring station 1 receives an instruction from the KDPII to measure the delay time within the network with the station under test 2, the measuring station 1 sets up a logical path for delay time measurement with respect to the station under test 2.

(2) When the measured station 2 detects the setting of the delay time measurement logical path from the measurement station 1, it prepares to receive the delay time measurement bucket.

■ Measuring station 1 transmits a delay time measurement packet using the delay time measurement logical path. At this time, the transmission time is stored in the MM12.

(2) Upon receiving the delay time measurement packet, the station under test 2 sends it back to the measurement station 1 as is.

■ The measuring station 1 receives the delay time measurement packet sent back from the station under test 2, determines the time of reception, and sends the packet to the MM12.
The difference from the transmission time stored above is calculated and stored in the storage area on the MM 12 as the intra-network delay time.

(2) At the measurement station 1, the operations from (1) to (2) described above are repeated until the KDPII gives an instruction to finish.

(2) Upon receiving the termination instruction from KDPII, measurement station 1 disconnects the delay time measurement logical path.

(2) The station under test 2 determines that the measurement is finished when the delay time measurement logical path is disconnected.

■ At measurement station 1, MM
The network delay time stored in the storage area on 12 KD
Output to PII.

〔Effect of the invention〕

As explained above, the present invention can automatically measure network delay time by transmitting a bucket for measuring network delay time from a measuring station to a station under test, which is a method that can be used in a conventional manual measurement method. This has the effect of eliminating all connection work and measurement work.

[Brief explanation of drawings]

The figure is a system diagram showing a measurement system for explaining an embodiment of the intra-network delay time measurement method according to the present invention. 1... Measuring station, 2... Measured station, 11...
Keyboard display, 12.22...main memory, 13.23...data communication device.

Claims (1)

[Claims] 1. An intra-network delay time measuring method in a packet-switched network using electronic exchanges, characterized by specifying an arbitrary switching station and automatically measuring the delay time with that station.