Chapter 6 Cabling the Line Ports and Completing the Installation

Connecting the Line Ports to the Network

Single Link: Inline Topology

In the inline topology, the Cisco SCE8000 resides physically on the 10 GBE (Ten Gigabit Ethernet) link between the subscribers and the network. The subscribers are usually connected through either a BRAS (in DSL access), a PDSN (in wireless access), a CMTS (in the Cable access), or a switch or router aggregator (in other topologies). The network is a router or layer 3 switch network element connecting the Cisco SCE8000 towards the core of the network.

Guidelines for single link inline topologies

If only two SPA modules are installed (only two SPA modules are required for a single link), they must be installed in bays 0 and 1 of the SPA jacket card.

Inline topologies require both Receive and Transmit fibers.

To maintain link continuity at all times, an optical bypass module should be installed.

Single link inline connectivity

Port 3/0/0: Link 0, Subscribers side

Port 3/1/0: Link 0, Network side

Single Link: Receive-only Topology

In this topology, an optical splitter unit resides physically on the 10 GBE link that the Cisco SCE8000 should monitor. The optical splitter unit is connected to the Cisco SCE8000 Rx links only. For each link monitored, there will be two Rx connections to the Cisco SCE8000, one for each direction of traffic flow in the link. The traffic passes through the optical splitter, which allows the Cisco SCE8000 to monitor traffic without affecting the normal optic and data path between subscriber and network.

Note Receive-only topologies can also be implemented using a switch. Such a switch must support SPAN functionality that includes separation between ingress and egress traffic and multiple SPAN-ports destinations.

Guidelines for single link receive-only topologies:

If only two SPA modules are installed (only two SPA modules are required for a single link), they must be installed in bays 0 and 1 of the SPA jacket card.

Receive-only topologies use only Receive fibers.

Single link receive-only connectivity

Port 3/0/0: Link 0, Split of optic signal transmitted by subscribers side

Port 3/1/0: Link 0, Split of optic signal transmitted by network side

Dual Link: Single Cisco SCE8000 Topologies

In this topology, one Cisco SCE8000 is connected to two full duplex, 10GBE links. The Cisco SCE8000 may be either inline, to support both monitoring and traffic control functionality, or receive-only for traffic monitoring functionality only.

Guidelines for dual link topologies:

SPA modules 0 and 1 are connected to the first link (Link 0)

SPA modules 2 and 3 are connected to the second link (Link 1)

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Cisco Systems manual Dual Link Single Cisco SCE8000 Topologies, Single link inline connectivity

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.