Chapter 3

Topology

Failure and Recovery

During setup of this topology, the configuration of the two SCE 1000 platforms is done through multi-box configuration. This ensures that both hold the same configurations and policies. The functional operation of switching from the active to standby, SCE 1000 is contingent upon the fact that the two SCE 1000 platforms are in the same Domain. All configurations performed on this Domain are automatically updated on both SCE Platforms. Both boxes should also be assigned to the same Subscriber Domain. For more information on Domains, see the Cisco SCMS Subscriber Manager User Guide.

The common protocols used for redundancy traffic switching between network elements such as routers and switches in networks are Spanning-Tree in layer2, HSRP in layer3 (usually used in data-centers), and other common routing protocols like OSPF or RIP.

Note When using routing/switching protocols that perform load balancing as well, the load balancing capabilities should be disabled.

The transition to the backup SCE 1000 platform is transparent. Once the routers/switches detected that traffic has been cut, they start sending traffic through the redundant link. After this occurs, the failed SCE 1000 can be fixed/replaced with no downtime, since the box is effectively disconnected from the network. After fixing/replacing the failed SCE 1000, you must copy the configuration of the current active SCE 1000 to the fixed/replaced SCE 1000.

The backup and restore procedures used for copying policies and Service Configurations from one SCE 1000 to the next are detailed in the Service Control Application Suite for Broadband User Guide.

Failure and Recovery

It is important to decide how the system should behave in case of the failure of the SCE 1000, both during the time that the unit is down and after recovery. This decision is influenced by several factors:

•Physical installation (connection mode)

•Redundancy

•Relative importance of maintaining connectivity vs. the continuity of the value-added services that the SCE 1000 enables.

Physical Installation

In a link connection via an external optical splitter, SCE 1000 failure does not affect traffic flow, which continues through the external optical splitter. When the SCE 1000 detects a failure that requires a recover by reboot, it immediately switches to Cutoff mode, stopping all traffic flow over the link until the SCE 1000 unit is restored to operation.

When operation resumes, the defined operational bypass mode is automatically resumed. The configuration of a bump-in-the-wire installation depends on the remaining two factors.

Cisco SCE 1000 2xGBE Installation and Configuration Guide

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OL-7821-04

 

 

 

 

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Cisco Systems OL-7821-04, SCE 1000 2xGBE manual Failure and Recovery, Physical Installation
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SCE 1000 2xGBE, OL-7821-04 specifications

Cisco Systems OL-7821-04, SCE 1000 2xGBE is an advanced network service appliance designed to deliver superior performance and reliability for service providers seeking to optimize their networks. This compact yet powerful device is integral in addressing the growing demands of data traffic in telecommunications and data centers.

One of the standout features of the SCE 1000 is its ability to support both IPv4 and IPv6 networks, ensuring compatibility with current and future networking protocols. This dual-stack capability empowers service providers to seamlessly transition and integrate next-generation applications without jeopardizing service quality.

The SCE 1000 is equipped with two Gigabit Ethernet (GbE) ports that enhance its connectivity options and allow for increased bandwidth. This dual-port configuration supports high-speed data transfers and streamlined operations, making it ideal for enterprises with substantial networking demands. Its flexible interface options facilitate easy integration into existing network architectures without requiring extensive reconfiguration.

An essential characteristic of the SCE 1000 is its advanced service creation technology, which allows for dynamic traffic management. This feature intelligently prioritizes and optimizes applications, ensuring that critical services receive the bandwidth they need while maintaining overall network efficiency. Service providers can leverage this capability to implement Quality of Service (QoS) policies, delivering a consistent user experience even during peak usage times.

Furthermore, the SCE 1000 supports various traffic engineering methods, including deep packet inspection and application recognition, enabling operators to monitor and control network traffic effectively. This capability is particularly crucial in identifying and mitigating potential network threats, resulting in enhanced security measures.

With its robust architecture, the device also offers scalability, accommodating the growing network requirements of service providers. As businesses grow and data use expands, the SCE 1000 can adapt without compromising performance.

In summary, the Cisco Systems OL-7821-04, SCE 1000 2xGBE is a versatile network service appliance that combines high performance, advanced service creation technology, and strong security features. It stands out as an essential tool for service providers aiming to enhance their network capabilities and deliver superior services to customers. Its dual GbE ports, IPv4/IPv6 support, and dynamic traffic management make it a reliable choice for organizations anticipating significant data growth.
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