Method and system for testing functions of forwarding actual services at communication nodes

Abstract

The method includes following steps: sets up a protocol conversion unit between the communication node and the host machine in use for running the real traffic at client-side; when the host machine in use for running the real traffic at client side initiates a real traffic, the communication node.

Description

technical field [0001] The invention relates to network communication technology, in particular to a method for testing the real service forwarding function of a gateway GPRS support node and a packet data service node, in particular to a method for testing the real service forwarding function of a communication node. Background technique [0002] The Gateway GPRS Support Node (GGSN) is the core network device of the Global Mobile Telecommunications System (GPRS / UMTS), providing the gateway function between the wireless packet domain core network and the packet data network (such as the Internet), the host or router on the mobile phone and the Internet It plays the role of carrying and forwarding IP service packets. The location of the GGSN in the GPRS / UMTS network is as follows figure 1 As shown, its external interface is as follows figure 2 shown. [0003] Before GGSN products are formally delivered to operators, they need to go through a series of tests such as System...

AI Technical Summary

Problems solved by technology

Using this simulated Gn interface to test IP service packets has the following disadvantages: it is difficult to completely simulate the actual various real IP service packets on the live network, whether it is the length of the packet and its change, the length of the IP packet The type of business (such as FTP, HTTP, VOD, Email, etc.), or the rate of message transmission, etc., cannot find the defects in the GGSN forwarding function that is triggered only by specific application services; let alone feel the data forwarding function of the GGSN The impact on real IP services, for example, a short delay and slight packet loss when GGSN forwards packets, will cause significant playback pauses in VOD demonstration services, and people will immediately recognize the existence of problems

This test method has the following defects: in the encapsulation of uplink data packets constructed by the Gn interface, the "PPP / IP / data" and "PPP signaling" packets carried by GTP are also constructed by test tools, instruments, and software

The disadvantages of this method are: large investment, high cost, and there are often various resource constraints, such as the number of mobile phones, etc., which lead to limited testing activities and scope, and are not completely suitable for laboratory testing in SDV, SIT and other stages. carry out

But using this method for testing has the following disadvantages: the function of the test tool is often limited to simulating the activation of the mobile phone, constructing a few common IP data packets to test whether the PDSN can be forwarded normally; it is difficult to completely simulate various real IPs on the live network Service messages, whether it is the length of the message and its change, the service type of the IP message (such as FTP, HTTP, VOD, Email, etc.), or the rate of sending the message, so that it is impossible to find that only specific application services will be triggered There are problems in the PDSN forwarding function; and the test effect is poor

The disadvantage of this test method is that it requires a lot of investment, high cost, and there are often various resource constraints, such as the number of mobile phones, etc., only a simple function test can be performed on the PDSN, and performance, pressure and abnormal process tests cannot be performed; Product testing suitable for equipment manufacturers

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