Chapter1

Overview of Cisco Carrier Sensitive Routing

CSR Basics

CSR evaluates the predetermined selection and rejection criteria as part of the source carrier and DNIS information to determine what routing information to return to the gatekeeper.

Note CSR can operate with multiple gatekeepers. CSR passes through the ANI, but its work is not based on the ANI. If the CSR receives the destination carrier, it passes the call through with the same information that it receives.

PostgreSQL Database

The postgreSQL database stores all the provisioned data associated with the CSR. The data can be entered into the database by using the GUI or by importing. The database supports active dataset, inactive dataset, and configuration data.

Information contained in the active and inactive datasets includes:

•Carrier Table—Contains a list of carriers and associated attributes.

•Contact List Table—Contains a relationship of contacts to a key.

•Contacts Table—Contains a list of RAS addresses (zones) and associated attributes.

•Egress Route Attributes Table —Contains a list of egress attributes and associated data.

•Egress Routes Table —Contains a list of egress attributes and associated routes.

•Ingress Route Attributes Table—Contains a list ingress attributes and associated data.

•Ingress Routes Table—Contains a list of ingress attributes and associated routes.

•Match Patterns Table—Contains a list of match patterns and associated routes.

•QoS Table—Contains a list of relative QoS values associated to route, ingress, and egress.

•Routes Table—Contains a list of routes and associated rules.

•Rules Table—Contains a list of rules and associated attributes (selection/rejection). Configuration data contained in the database includes:

•Gatekeepers Table—Contains a list of gatekeepers and associated registration messages.

•Filters Table—Contains a list of gatekeepers and associated filters.

•Configuration Settings Table—Contains logging level, application priority, incoming connection port and test routes accounting flag.

•TestRoutes —A record is added to this when a test route command is issued.

•TestOutputs—A set of records is added to this table after the test route command is complete.

•LogEntries—A set of records is added to this table after the test route command is complete.

•StringResources—Logging strings are located here.

CSR Application

The CSR application contains the logic (selection and rejection) to determine the proper routing for calls based on inputs from the gatekeeper. CSR operates by the rules described in the following section.

Carrier Sensitive Routing User Guide

1-3

Page 14 Page 16
Page 15
Image 15
Cisco Systems Version 1.1 manual PostgreSQL Database, CSR Application
Page 14 Page 16

Version 1.1 specifications

Cisco Systems Version 1.1 introduced significant advancements in network technology, setting a new standard for performance, security, and management in the ever-evolving landscape of enterprise networking. This version is characterized by a robust architecture that supports a wide array of devices and applications, ensuring seamless connectivity and efficiency for businesses of all sizes.

One of the standout features of Cisco Systems Version 1.1 is its enhanced routing capabilities. The introduction of advanced routing protocols enables more efficient data handling and traffic management. This improvement translates into reduced latency and optimized bandwidth utilization, which are crucial for organizations relying on real-time applications like VoIP and video conferencing.

Another notable technology integrated into Version 1.1 is the expanded support for Software-Defined Networking (SDN). This allows network administrators to manage their network resources more flexibly and dynamically, adapting quickly to changing demands. With SDN, Cisco provides a centralized control plane that enables automated provisioning and orchestration of network services, ultimately leading to reduced operational costs and improved service quality.

Security improvements are also a hallmark of Cisco Systems Version 1.1. The incorporation of advanced intrusion detection and prevention systems (IDPS) enhances the overall security posture of networks. Additionally, built-in encryption protocols ensure that data is transmitted securely, safeguarding sensitive information from potential cyber threats.

Furthermore, Version 1.1 emphasizes user experience with its intuitive management interface. Network monitoring and troubleshooting tools have been redesigned to be more user-friendly, allowing IT teams to quickly identify and resolve issues, thereby minimizing downtime and improving overall network reliability.

Scalability is another critical characteristic of this version, designed to accommodate the growth of companies. Whether an organization is expanding its physical infrastructure or transitioning to cloud-based services, Cisco Systems Version 1.1 provides the flexibility necessary to scale operations without sacrificing performance.

In summary, Cisco Systems Version 1.1 is a comprehensive networking solution that integrates advanced routing capabilities, SDN support, enhanced security features, and a user-friendly management interface. Its scalability ensures that it can meet the growing demands of modern enterprises, making it a pivotal choice for businesses looking to optimize their networking infrastructure. As companies continue to embrace digital transformation, Cisco Systems Version 1.1 stands out as a reliable foundation for future growth and innovation.
Top Page Image Contents