Chapter 3 Cisco SCE8000 Topology and Topology-Related Parameters

Physical Topologies

The two Cisco SCE8000s are simultaneously aware of the subscriber contexts, and subscriber states are constantly exchanged between them, such that if the primary Cisco SCE8000 fails, the secondary can take over with minimum state loss.

When one Cisco SCE8000 fails (depending on the type of failure) its link traffic is still bypassed to the functioning Cisco SCE8000 and processed there, so the traffic processing continues for both the links.

The bypass of the traffic through the failed Cisco SCE8000 is configurable, and the user may choose to always cutoff the line that goes through the failed Cisco SCE8000. In this case network redundancy protocols like HSRP are responsible for identifying the line cutoff and switching all the traffic to go through the functioning Cisco SCE8000.

In addition, it is possible to configure the Cisco SCE8000 to use the external optical bypass device so that in the event of any failure of the Cisco SCE8000, it will be used to provide link continuity. This ensures 100% link continuity at the expense of providing asymmetric routing functionality.

Multi-Gigabit Service Control Platform (MGSCP) Topology

In this topology, multiple Cisco SCE8000 platforms are connected to a Cisco 7600 Series router, which acts as a dispatcher between the platforms. The router contains two EtherChannels (ECs), one for the subscriber side and one for the network side, that perform load balancing for the SCE platform traffic. Traffic enters the first router, is distributed between the SCE platforms by the subscriber-side EC and then returns to the router so it can be forwarded to its original destination.

Figure 3-7 Basic MGSCP Topology

Subscribers

Cisco 7600

40Gig

Internet

270877

4+1

SCE8000s

There are a number of variables to be considered in the MGSCP topology. Two of the main factors to be considered include:

Type of SCE Platform Redundancy, page 3-8

Redundant Cisco 7600 Series Router, page 3-8

Cisco SCE8000 Installation and Configuration Guide, Rel 3.1.7

 

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Cisco Systems SCE8000 manual Multi-Gigabit Service Control Platform Mgscp Topology, Basic Mgscp Topology

SCE8000 specifications

Cisco Systems SCE8000 is an advanced service control edge solution designed to enhance the management and performance of service provider networks. Targeted at carriers and large enterprises, the SCE8000 is characterized by its capacity to efficiently handle traffic management, quality of service (QoS), and policy enforcement across various services including voice, video, and data.

One of the main features of the SCE8000 is its scalability. The platform supports a high-density architecture, allowing service providers to seamlessly expand their networks to accommodate growing traffic demands. This scalability is complemented by an impressive throughput, which enables the handling of millions of concurrent sessions, making it ideal for environments with significant user activity.

The SCE8000 employs advanced traffic management capabilities, leveraging deep packet inspection (DPI) technology. This allows for granular visibility into network traffic, enabling service providers to make informed decisions about resource allocation and policy application. Additionally, the device supports multiple protocol analysis, ensuring compatibility across various network services and enhancing overall efficiency.

Quality of Service (QoS) is another critical characteristic of the SCE8000. The platform provides sophisticated mechanisms to prioritize traffic, thereby ensuring that delay-sensitive applications such as VoIP and video streaming receive the necessary bandwidth. This capability is enhanced by Cisco's intelligent traffic shaping and congestion management features, which work together to optimize the user experience even in congested network conditions.

The SCE8000 also integrates robust security features, including session initiation protocol (SIP) security, to protect against malicious attacks and maintain service integrity. This is particularly important in today's cyber landscape where service providers must safeguard their infrastructure from various threats.

Automation and programmability are essential characteristics of the SCE8000, enabling operators to implement policies quickly and efficiently. This feature allows for dynamic scaling and rapid deployment of new services, significantly reducing the time to market for new offerings.

In conclusion, Cisco Systems SCE8000 stands out as a powerful platform for managing service provider networks. With its high scalability, advanced traffic management, quality of service assurance, robust security features, and automation capabilities, the SCE8000 enables service providers to deliver a superior customer experience while optimizing their operational efficiency. This makes it an invaluable asset for any organization looking to enhance its network performance and service delivery.