IPTV Bearer Network Solution

1. IPTV Business Overview

The greater potential of the development of Internet and communication services lies in the breakthrough of terminal bottlenecks, and television is the most direct and potential conversion of home terminals.

IPTV is an extremely promising service that uses television as a broadband network terminal. IPTV applications can effectively combine the television, network and PC fields, fully improve the efficiency of broadband utilization, and benefit the rational prosperity of the broadband industry.

IPTV will inject new vigor into Broadband operators and content providers. In addition to providing users with communication and information services, broadband operators can use IPTV to provide users with a wide range of personalized TV programs, it is of great significance to attract users to increase the ARPU value. Therefore, some experts believe that China has basically met the technical and market conditions for vigorously developing IPTV.

In the IPTV solutions provided by various manufacturers, people focus more on IPTV service systems and home terminals. The role of bearer networks is ignored. Moreover, at present, the operator still uses the IP Data Network Construction and Operation ideas to carry out IPTV services. Is it appropriate to pack new wine in old bottles? Do we need to review the Construction and Operation ideas of IPTV bearer networks?

2. Cisco IPTV Bearer Network Solution

Cisco predicted from many years ago that network and business integration will be a trend. The current IPTV Business can be seen as a key application in a converged network. Using the current broadband man to carry out IPTV services, cisco proposes "3 + 1" operating philosophy based on business monitoring and control, network quality quantification, active O & M mechanisms, and end-to-end security assurance, it helps telecom operators better manage their networks.

2.1 business-based Monitoring and Control

With the development of new services such as IPTV, operators must improve their understanding and control of the transmission services on the network. Because the current network management tools and traffic analysis tools cannot distinguish between services such as video, VoIP, Web browsing, music downloads, and P2P Traffic, the service quality of a single service cannot be guaranteed, it cannot be effectively controlled.

The Cisco Service Control Platform SCP (ServiceControlPlatform) helps operators understand the bandwidth usage of various services in the network, such as P2P and video traffic, so as to follow certain service models, implement flexible bandwidth allocation policies for various service traffic in the network to ensure the healthy and orderly development of IPTV services

With the help of the Cisco Service Control Platform, broadband operators can define and provide broadband services in a new way. Carriers can provide specific broadband services for each user and each application according to the prescribed policies to truly personalize broadband services.

2.2 quantification of network quality and active O & M model

Using CISCOIPSLA technology to provide operators with comprehensive service quality parameter detection and analysis

During the construction and maintenance of the current broadband ip man, the measurement, evaluation, and long-term statistics on the overall network performance and service capabilities are often an important part of network O & M and network management. In many cases, simple troubleshooting and judgment tools do not provide sufficient and accurate reference data, it also requires accurate and quantified data and historical baseline statistics over a period of time to provide powerful help for O & M.

While carrying out IPTV services, we need to consider how to adapt the traditional O & M model to the needs of new businesses. For example, how to locate network bottlenecks? How can we verify network operation status in real time and accurately measure network end-to-end performance? How can we verify the service level and capability of the network itself? These problems require very specific statistics and historical records on network performance, and draw scientific and accurate conclusions through comparison.

Even after QOS is implemented in the network, it does not mean that the IP network traffic and structure will change with the changes of users. To ensure the quality of the network, you also need to monitor the network in real time and adjust it based on the actual situation. Otherwise, even if QOS is successfully implemented, changes in the actual network conditions will lead to a decline in the service quality of some users. Currently, the SLAAgent feature provided by Cisco in IOS helps operators monitor latency, packet loss rate, and jitter between any two points in the network in real time through network management software.

Using CISCONetflow technology to establish a traffic model analysis mechanism suitable for IPTV services

NetFlow is now the most important network traffic statistics Technology in the industry. The NetFlow service on the Cisco routing and switching Platform provides network traffic statistics. To better operate IPTV services, operators can use CISCONetflow technology to accurately collect statistics and analyze IPTV service traffic, and establish a complete traffic model analysis mechanism suitable for IPTV services.

Through the Implementation Monitoring and long-term statistics of the above network service quality and business traffic, operators can locate potential fault points in the network in advance and eliminate faults in a timely manner, so as to reduce user complaints and improve user satisfaction.

2.3IPTV Service Security Protection

From the security perspective, the IPTV service bearer network is different from the traditional broadband network. It not only needs to prevent network viruses and network attacks like traditional broadband networks, but also must strictly control whether the content sent by users to the network is legal and protect the content sources in the IDC. In terms of ensuring the security of the IP network, Cisco can use its self-defense network strategy to help operators shift the network from passive defense to active defense. In particular, in terms of DDOS attack protection, the solution provided by CISCO can effectively protect IPTV service servers, and the business management platform is not subject to DDOS attacks.

Use CISCOGuard to provide IPTV video source protection

The CiscoGuard solution provides complete protection to defend against various DDoS attacks, and even those that have not yet appeared. With the characteristics of positive vigilance, attackers can quickly detect attacks and extract malicious packets from legitimate businesses. The CiscoGuard solution provides fast DDoS response in seconds instead of hours. This scheme is easy to deploy near key routers and switches without affecting the performance and reliability of existing network components.

The CiscoGuard solution suite consists of two independent components: CiscoDetector and CiscoGuard, which work together to provide DDoS protection for any environment.

Cisco monitor CISCODetector): As an early alarm system, Cisco detector provides in-depth analysis of the most complex DDoS attacks and searches for deviations from "normal" behavior or basic DDoS attacks. After the attack is identified, the detector sends an alert to the Cisco protector, providing detailed reports and specific alerts to quickly respond to the threat. For example, even if the full boundary is not exceeded, the detector can observe that the UDP packet rate from a single source is out of the range.

Cisco protector: Cisco protector is the cornerstone of the CiscoDDoS solution suite-it is a high-performance anti-DDoS Mitigation device that protects data resources from the IPTV Business Center.

When the Protector is notified that a target is under attack, whether from a Cisco detector or another security monitoring device such as intrusion detection or firewall, services pointing to the target will be transferred to the protection device connected to the target device. Then, the business will use five stages of analysis and filtering to remove all malicious businesses so that good data packets can be continuously transmitted.

The Protector is located near a vro or vswitch at a single network interface. On-demand protection is implemented without affecting the data business flow of other systems. Because of its location, the protector can protect multiple possible targets at the same time, including routers, Web servers, DNS servers, LAN and WAN bandwidth.

3. Summary

It is not hard to see that, as IPTV businesses gradually enter the commercial stage, it is imperative to optimize the IPTV man. In this work, we should not only consider IPTV support, but also ensure that the network has sufficient scalability and rich features as much as possible, to ensure that the 3G, NGN and other new services will soon be faced. Based on its years of experience in building an IP bearer network around the world, Cisco is willing to work with our Chinese operators to build China's next-generation high-quality IP network.

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