Unreliable surveillance service

City-wide surveillance relies largely on reliable operation of the IP cameras and the transmission network. Single point of failure is one of the important issues to be addressed. Even though the transmission network has redundancy protection, long convergence time will introduce severe interruption for the critical surveillance service. It is crucial to maintain an uninterrupted surveillance network.

Management difficulties 

Management is also among the top challenges on the list. The whole solution involves an extensive library of devices, and in a large quantity as well. IP surveillance cameras are installed all over the city while the servers are back at the control center. It is also difficult to manage such a large number of devices at the same time. Also, is there any proactive detection function to monitor all the cameras in the event of failure?

Extreme environmental conditions

The most challenging task of every city surveillance solution is to ensure stable operation of all the outdoor devices. Drastic temperature range is a headache. In some cities, the temperature within the container holding the surveillance device can reach up to 80°C during summer. In winter, the temperature would drop to as low as -40°C. Dust and small particles, another operation challenge, are everywhere in the outdoor environment. Conventional networking devices have no chance to survive at all.

High deployment cost

Expansive deployment and maintenance costs are another challenging issue for the authority. Devices such as IP cameras have to be installed at different parts of the city such as highway and key crossroads. The widely scattered devices come with high installation expenses, and inevitable maintenance and operation costs in the long run.

 

Ruijie City-wide IP Surveillance Integrated Network and Monitoring Solution offers a comprehensive and highly reliable infrastructure. From enterprise switches, wireless access points to 3G/4G mobile routers, Ruijie can provide a one-stop-shop solution. Together with Ruijie unified smart network management system, the administrator can visualize and manage the operation status of all IP surveillance devices as well as network devices on a real-time basis. The NMS supports proactive and out-of-box notification feature, allowing all critical alerts to be sent via SMS/Voice/Email, which can further enhance the overall system reliability.

High Reliability Infrastructure

Delivering a highly available and non-blocking transmission network is crucial for any surveillance service. Ruijie City-wide IP Surveillance Integrated Network and Monitoring Solution is committed to providing a robust infrastructure with adoption of Ruijie VSU Virtualization feature, Fiber Ring design and Power Redundant switches.

1. Virtualization Core Backbone

Ruijie City-wide IP Surveillance Solution deploys market-leading VSU (Virtual Switching Unit) virtualization technology for the core backbone, offering failover time of as low as 1.14ms (Tolly certified). The VSU is a robust stacking technology, providing unified device management and cross chassis link aggregation. Moreover, the VSU Virtual Switch Domain is expandable up to 8 virtual switch members, which provide additional port density and capacity requirement on an on-demand basis.
Ruijie VSU technology also offers the flexibility to use either GE or 10GE copper/fiber ports to form the Virtual Switch Unit, minimizing extra investment on acquiring the dedicated stacking modules.

Figure 4. Marketing-leading VSU technology by Ruijie

Figure 5. Tolly Certified VSU convergence performance versus H3C (HP)

2. Resilient Fiber Ring Design

Ruijie City-wide IP Surveillance Solution fulfills various monitoring scenarios within the city. It is cost-efficient with full coverage.
Since the surveillance network covers the whole city, the solution deploys a single-core fiber ring network to minimize the investment cost. Together with the wavelength division multiplexing technology, all the video data can be transmitted via one single-core fiber. The deployment offers the best network performance and maximum cost savings.
Single fiber ring network can enhance the system stability. Comparing to the PON (Passive Optical Network), the single fiber ring network totally eliminates single point of failure. It supports fast failover to enable stable and smooth network performance.

Figure 6. Single fiber ring network model

3. Power Redundancy Protection

Furthermore, customer can choose the switch model with dual power slots for additional power supply unit failure protection. All Ruijie flagship enterprise switches provide dual-power slots options including S5750-E, S6220, S8600 and S12000 chassis switch series.

Figure 7. Power Redundancy Protection

Industrial Hardware Design

Ruijie City-wide IP Surveillance Integrated Network and Monitoring Solution deploys an industrial Ethernet switch series -- RG-IS2700G. Designed rugged and compact, the switch offers advanced features including vibration resistance, wide temperature range, dust proof, and lightning arrester to cope with harsh operating environments. Ethernet Ring Protection Switching (ERPS) is another highlight to improve network flexibility, resiliency and security. The RG-IS2700G series switches provide customers with a robust, highly secure and easy-to-use switching infrastructure.
Ruijie RG-2700G series switch embodies in a durable aluminum case mainstream industrial chips, highperformance CPU, and industriallevel power module to meet the demanding requirements across industrial networks. The switch supports fanless cooling, -40 to 85ºC operating temperature range, IP40 class protection, lightning protection power>=6KV, power supply with antivibration feature, electromagnetic interference 4-class standard, shock and vibration resistance.

Figure 8. RG-IS2700G switch designed for extreme weather conditions

Integrated and Easy Management

Figure 9. Visualize your surveillance network in real time

Ruijie City-wide IP Surveillance Integrated Network and Monitoring Solution delivers unified resources management and allows privileges customization. Network administrator can assign management privileges to different control center accordingly.
Ruijie RG-SNC (Smart Network Commander) is a unified management system designed for real-time performance configuration and alert management. The advanced SNC does not only work with Ruijie equipment, but is also compatible with 3rd party SNMP-capable devices such as mainstream IP cameras and NVR servers. The real-time network topology displays the operation status of all the wireless devices (IP cameras, switches, routers, etc.) in a clear and direct manner. The network administrator can remotely monitor the IP cameras and other devices with ease and be notified in the event of failure for immediate action.
In case of any defined critical events (e.g. device failure, link failure, power supply failure, insufficient bandwidth, video recording failure, etc.), Ruijie SNC with a built-in proactive alert system provides SMS/Voice/Email alerts to operators instantly.
The SNC solution also features smart power management via Ruijie PoE switches and flexible icon management.

Figure 10.Power management operation

Figure 11. Flexible icon management

Proactive Recording Failure Detection

The solution provides a unique feature of “low threshold” bandwidth monitoring, which can effectively detect the video recording problem introduced by IP camera / NVR server failure and software hang. As illustrated in the figure below, the total baseline bandwidth should be 20M when all four IP cameras are in normal operation (each occupies 5M). In the event of failure when one fails (or hangs), the RG-SNC networ kmanagement system will detect the bandwidth drops below the healthy baseline threshold (i.e. 20M) and will alert the service operator immediately. The solution hence offers superior performance stability.Furthermore, Ruijie SNC provides detailed operation and incident logging record, which are useful for future historical audit trail and troubleshooting purposes.

Figure 12. Unique “low threshold” bandwidth monitoring

4G Mobility Surveillance

During crime investigations or major festival/sports events, temporary surveillance system has to be set up if the venue does not have any surveillance system. The deployment of such has to meet two major requirements – simple to deploy and easy to uninstall for subsequent use. Ruijie City-wide IP Surveillance Integrated Network and Monitoring Solution achieves full security with outdoor wireless access or 4G/3G monitoring. The deployment comes with high flexibility and simplified installation to satisfy all surveillance needs. 4G mobile surveillance service is growing in demands for various applications such as investigation and driving test. A 4G router can be installed on the vehicle and send realtime surveillance video back to the headquarter. Video network commonly requires bandwidth of 3-8Mbps. The 4G-LTE offers uplink up to 40Mbps, which can fully support transmission of 5-13 HD video channels back to the control center. The 4G mobile router does not require any cabling, insert a SIM card and it is ready for use. Easy and flexible to implement. The 4G router is compact with power consumption of 100V-200V AC. It supports TDD (Time Division Duplexing) and FDD (Frequency Division Duplexing) modes. The router backwardly supports 3G technology and is an ideal match for mobile surveillance system.

Figure 13. Ruijie Transport LTE Access Solution

Solution Components

The RG-S6220 Series 10G Core Switch is recommended for the Core Backbone Switches for the City-wide IP Surveillance Integrated Network and Monitoring Solution, with up to 48-port GE/10GE copper and fiber ports, 4 40GE Ethernet uplink ports, providing non-blocking switching throughput up to 1280Gbps. The RGS6220 Series Switches provide robust hardware reliability with MTBF of over 200K hours, built-in 1+1 Power Redundancy, 3+1 Fan Redundancy, and all removable components are hot-swappable. The switch also supports Ruijie VSU Switch Virtualization Technology (Tolly Certified), which provides proven network stability and flexibility for the transmission network, and allows transparent service failover (as low as 1.14ms) upon any critical network incidents.

The RG-IS2706G Industrial Switch is dedicated for the Citywide IP Surveillance Integrated Network and Monitoring Solution with 4 10/100/1000M copper ports, 2 1000BASE-X SFP ports, operating temperature from -40 to 85°C and power consumption of ≤8W. The switch supports Ethernet Ring Protection Switching (ERPS) which enhances network stability and flexibility to fully meet the requirements of City-wide IP Surveillance, intelligent transportation outdoor surveillance, and surveillance deployment in harsh environment.

Figure 15. Industrial Switch -- RG-IS2706G

The RG-AP620-H(C) outdoor AP adopts the 802.11n protocol, while delivering data rates of up to 300Mbps per radio and 600Mbps per AP. The RG-AP620-H(C) has an enclosed shell of water-proof, flame-resistant, and dust-proof design. Such a design enables RG-AP620-H(C) to be deployed in outdoor environment without any impact from severe weather conditions. The outdoor AP adapts well to both the cold Northern region and moist Southern region. This simplifies installation and maintenance to a great extent and meets the deployment requirements for outdoor surveillance and deployment in harsh environment.

Figure 16. Outdoor AP -- RG-AP620-H(C)

The RG-RSR820-F is a 4G router ideal for the City-wide IP Surveillance Integrated Network and Monitoring Solution. The router has a small size of 200mm * 150mm * 30mm with high speed. FDD mode is supported with up to 40Mbps uplink. The operating temperature ranges from -40 to 80°C and it is backward compatible with 3G, which fully meet the surveillance requirements for mobile law enforcement, mobile police kiosks and temporary security.

Figure 17. 4G Router -- RG-RSR820-F

Ruijie RG-SNC (Smart Network Commander) is a unified network management system launched by Ruijie Networks especially designed for network performance management and monitoring. With a friendly browser UI, the SNC provides an extensive array of features such as network topology display, device management, performance monitoring, configuration & software management, real-time alarm and log & report management.

Figure 18. Unified Network Management System-- RG-SNC