Application of clock synchronization system in banking system

The purpose of the clock synchronization system of the banking system is to install a unified time scale for the internal system of the bank , When we look at the information system ecology again from the overall perspective , We will find that there are more application scenarios to expand . In the near future , The bank information system will be more perfect , Its demand for accurate time will be further improved , therefore , Can be based on NTP The clock synchronization system of network timing protocol is built and applied for the infrastructure of bank information system construction .

SYN2151 Beidou time synchronization server

With the progress of science and Technology , Banks have been developing towards network diversification , With the trend of data centralization and all-weather work , Therefore, the important guarantee for the operation of the bank comes from the normal operation of the clock synchronization system , If the clock synchronization system is operated improperly 、 Security vulnerabilities 、 System failure 、 Unexpected disasters and so on may cause the banking and financial system to work abnormally , So the security of the bank clock synchronization system , It has become the primary problem of bank information construction and management .

One 、 The importance of the bank clock system

With the continuous improvement and expansion of the banking and financial system , The equipment and business of banks are also increasing , Such as computer network system 、 Security system 、ATM System 、 Standard time information is required for the fire protection system , And electronic remittance 、、 Standard time information is also required , Then the bank saves the standard information in the bank's computer system as a proof of the success of the transaction .

Two 、 Requirements for bank clock synchronization system scheme

As the banking and financial system needs time service equipment, network equipment is basically the main equipment , Network equipment time information is transmitted through the network , Therefore, the network equipment in the banking system will be transmitted with some high-risk vulnerabilities , Once a virus invades the bank, important files will be lost or will not work properly . Therefore, the bank's network equipment has high requirements for time security and virus protection , There is also a need for accurate time for the bank's business handling and the bank's fire alarm system , It even requires that the time be equal to every minute , Only in this way can we ensure the normal operation of the bank .

The design principle of the clock synchronization system of the banking system the equipment constituting the banking information system is not only large in scale and volume , And it's widely distributed . therefore , The clock synchronization system is built to “ Three layer architecture ; High availability redundancy 、 Take disaster recovery into consideration ; Upward compatibility ; A logical partition 、 Autonomy in the region ” Basic design principles , Adapt to the current situation , Meet system flexibility 、 Robustness and scalability requirements .

The design principle of bank reference clock system the equipment constituting the bank information system is not only large in scale and volume , Moreover, there are many terminals and they are widely distributed . therefore , The construction of clock synchronization system needs to be considered comprehensively from the perspective of management and technology , With “ Three layer architecture ; High availability redundancy 、 Take disaster recovery into consideration ; Upward compatibility ; A logical partition 、 Autonomy in the region ” Basic design principles , Adapt to the current situation , Meet system flexibility 、 Robustness and scalability requirements .

Recently, according to the time service demand of a bank in Xi'an , So as to provide a set of clock synchronization system . The scheme requirements of the clock synchronization system are described as follows .

1、 Clock active / standby redundancy

The primary and standby redundancy refers to that two time servers are redundant backups to each other , The company's time server has a heartbeat detection function , When the primary time server fails, the standby time server can still run normally .

2、 Rubidium atomic clock is built in the clock

The time server can receive GPS Beidou satellite signal , And give real-time time time service to terminal equipment , However, if the satellite loses lock due to weather or other reasons , Therefore, it is impossible to use satellite time information for time service , Rubidium atomic clock is built in the time server to keep time , Rubidium atomic clock can lock the time information before the time server satellite loses lock . When the satellite signal returns to normal , The time server automatically switches to the satellite time reference .SYN2151 Beidou time synchronization server

3、 The clock NTP Request quantity

For the bank clock system , Because there are many time service devices , Therefore, the throughput of the time server should be greater than 14000 Time / second , And the time server can give time service to tens of thousands of devices at the same time , So as to achieve the effect of time unification .

4、 Clock security

When the time server gives time service to the network device , It is necessary to ensure the security of time information , Therefore, the time server is required to have firewall protection 、SYN-flood defense 、 Hardware and software watchdog 、QoS Traffic monitoring 、 Choose Chinese and English 、 Real-time view NTP Running state 、 Network diagnosis and other security functions .

3、 ... and 、 Program composition

The scheme of the bank financial system clock synchronization system consists of 2 Set of Standard Edition SYN2153 Time synchronization server 、 The satellite antenna consists of two parts .

1、 The time synchronization server receives Beidou +GPS After the satellite signal is processed and converted by internal high-tech, it is processed through the network interface NTP Protocol output , So as to provide accurate time .

2、 Antenna standard configuration 30 Off white mushroom antenna , It is erected on the roof to better receive the satellite standard time information .

3、 The lightning arrester is installed at the coaxial cable joint between the time synchronization server and the antenna , It can effectively prevent damage to satellite receiving equipment caused by lightning current induced by lightning .

Four 、 Time service principle of clock synchronization system

Master clock and master clock are from GPS After Beidou satellite obtains the standard time signal , Then it is transmitted to the standby master clock through various interface types 、 Computers and other equipment , In general , It is time service through the network NTP Protocol protocol output , It can unify the time of the network equipment in the banking system .

5、 ... and 、 Application field of bank financial system clock synchronization system

The timing of the clock synchronization system has high accuracy 、 Good stability 、 Strong function 、 No cumulative error 、 It is not restricted by the regional climate and other environmental conditions 、 High cost performance 、 Simple operation , So the clock synchronization system is more and more widely used , In addition to the bank financial clock system introduced in this article , It can also be applied to power facilities 、 Bank finance 、 mobile communication 、 The transportation 、 oil 、 Radio and television 、 Petrifaction 、 metallurgy 、 The defence 、 education 、IT、 Public service facilities and so on .

Xi'an is in sync with finance （ Bank 、 negotiable securities 、 Insurance etc. ） The product scheme developed for the data center synchronization scenario , It has high reliability and security and excellent synchronous timing performance , Generally recognized by customers . In addition to participating in Changjiang Commercial Bank , Hubei bank , Zhejiang Mintai bank , Luzhou Commercial Bank , Shandong Lucheng Rural Commercial Bank Co., Ltd. has had cooperation , Both received quite good reviews .

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