Chapter 3

Topology

Topology Considerations

Number of links: The SCE 2000 may be connected to one or two GBE links. This is relevant for both bump-in-the-wire and Receive-Only topologies.

Redundancy: Must the system be designed to guarantee uninterrupted SCE 2000 functionality? If so, there must be a backup SCE 2000 Platform to assume operation in case of failure of the primary device.

Link continuity: How should the SCE 2000 respond to platform failure with regard to link continuity? Should traffic flow continue even though the unit is not operating, or be halted until the platform is repaired/replaced?

These issues determine three important aspects of system deployment and configuration:

How many SCE 2000 Platforms are needed and how will they be installed?

Physical topology of the system: The actual physical placement of the SCE 2000 in the system.

Topology-related configuration parameters: The correct values for each parameter must be ascertained before configuring the system to make sure that the system will function in the desired manner.

Functionality

The SCE 2000 can serve one of two general functions:

Monitoring and Control: The SCE 2000 monitors and controls traffic flow. Decisions are enforced by the SCE 2000 depending on the results of the monitoring functions of the SCE 2000 and the configuration of the Service Control Application for Broadband or Mobile solution.

In order to perform control functions, the SCE 2000 must be physically installed as a bump- in-the-wire, and the connection mode must be “Inline”.

Monitoring only: The SCE 2000 monitors traffic flow, but cannot control it.

Either a bump-in-the-wire installation or an optical splitter installation may be used for monitoring only. In the latter case connection mode must be “receive-only”.

Number of links

The SCE 2000 can be deployed in a single GBE link or in two GBE links. The two-link topology may implement load-sharing and the SCE 2000 in this case is able to process both directions of a bi-directional flow even if they split to both links.

Redundancy

When a high degree of reliability is desired, a second SCE 2000 Platform should be installed to provide backup operation capabilities. The combination of two SCE 2000s guarantees uninterrupted functioning in case of a failure of one of the platforms. The two SCE 2000s are cascaded, so that, although all processing is performed only in the active SCE 2000, the standby SCE 2000 is constantly updated with all the necessary information so that it can instantly take over processing the traffic on the data links should the active SCE 2000 fail.

If only preservation of the network links is required, and uninterrupted functionality of the SCE 2000 is not required, a single SCE 2000 is sufficient.

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Cisco Systems SCE 2000 4xGBE manual Functionality, Number of links, Redundancy

SCE 2000 4xGBE specifications

The Cisco Systems SCE 2000 4xGBE is a robust solution designed to optimize IP networks and enhance service delivery. As a member of Cisco's Service Control Engine (SCE) product line, this device is particularly suited for service providers looking to manage network traffic, improve service quality, and provide a suite of advanced management features.

One of the standout features of the SCE 2000 is its ability to process and analyze network traffic in real-time. This capability allows operators to gain insights into user behavior, application usage, and overall network performance. By utilizing deep packet inspection technology, the SCE 2000 can identify different types of traffic, enabling network managers to enforce policies and prioritize critical applications effectively.

In terms of interface capabilities, the SCE 2000 offers four 1 Gigabit Ethernet (GbE) ports. This versatility allows for easy integration into existing network infrastructure while ensuring ample bandwidth for data transfer. The device supports both IPv4 and IPv6 protocols, making it future-proof and suitable for evolving network demands.

One of the significant technologies employed by the SCE 2000 is Service Level Agreement (SLA) management. This feature ensures that service providers can meet their commitments to customers by monitoring performance metrics such as latency, jitter, and packet loss. The ability to generate reports based on SLA compliance allows for better customer engagement and transparency.

Additionally, the SCE 2000 facilitates dynamic resource allocation, enabling service providers to adapt network resources based on current demand. This elasticity is crucial in managing peak loads and ensuring a seamless user experience. Furthermore, the device’s support for Quality of Service (QoS) policies ensures that critical applications receive the necessary bandwidth and resources dedicated to maintaining operational efficiency.

The SCE 2000 also emphasizes security with features such as intrusion detection and prevention capabilities, helping protect the integrity of the network. This combination of performance monitoring, traffic management, and security makes the SCE 2000 an invaluable tool for service providers.

In conclusion, the Cisco Systems SCE 2000 4xGBE is a powerful network management solution that excels in providing real-time traffic management, SLA compliance, and security features. Its capabilities make it an essential component for service providers aiming to optimize their networks while delivering high-quality services to their customers.