Chapter 2 Understanding Cisco Access Registrar

Program Flow

•The secondary server will not know about the current active sessions that are maintained on the primary server. Any resources managed by the secondary server must be distinct from those managed by the primary server, otherwise it will be possible to have two sessions with the same resources (for example, two sessions with the same IP address).

•The primary server will miss important information that allows it to maintain a correct model of what sessions are currently active (because the authentication and accounting requests are being sent to the secondary server). This means when the primary server comes back online and the NAS begins using it, its knowledge of what sessions are active will be out-of-date and the resources for those sessions are allocated even if they are free to allocate to someone else.

For example, the user-session-limit resource may reject new sessions because the primary server does not know some of the users using the resource logged out while the primary server was off-line. It may be necessary to release sessions manually using the aregcmd command release-session.

Note It may be possible to avoid this situation by having a disk drive shared between two systems with the second RADIUS server started up once the primary server has been determined to be off-line. For more information on this setup, contact Technical Support.

Script Processing Hierarchy

For request packets, the script processing order is from the most general to the most specific. For response packets, the processing order is from the most specific to the most general.

Table 2-6, Table 2-7, and Table 2-8show the overall processing order and flow:

(1-6) Incoming Scripts, (7-11) Authentication/Authorization Scripts, and (12-17) Outgoing Scripts.

Note The client and the NAS can be the same entity, except when the immediate client is acting as a proxy for the actual NAS.

Table 2-6 Cisco Access Registrar Processing Hierarchy for Incoming Scripts

Overall Flow Sequence

Incoming Scripts

 

 

1)

Radius

 

 

2)

Vendor of the immediate client.

 

 

3)

Immediate client.

 

 

4)

Vendor of the specific NAS.

 

 

5)

Specific NAS

 

 

6)

Service

 

 

Table 2-7 Cisco Access Registrar Processing Hierarchy for

Authentication/Authorization Scripts

 

 

 

 

Overall Flow Sequence

Authentication/Authorization Scripts

 

 

 

 

 

7)

Group Authentication.

 

 

 

 

8)

User Authentication.

 

 

 

 

9)

Group Authorization.

 

 

 

 

 

 

 

 

 

 

 

Cisco Access Registrar 3.5 Concepts and Reference Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2-8

 

 

 

 

OL-2683-02

 

 

 

 

 

 

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Cisco Systems 3.5 manual Script Processing Hierarchy, Incoming Scripts, Authentication/Authorization Scripts
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3.5 specifications

Cisco Systems 3.5 is an advanced version of Cisco's renowned networking and security solutions. This iteration showcases significant enhancements in performance, scalability, and security, making it a preferred choice for enterprises aiming to optimize their network operations and bolster their cybersecurity posture.

One of the main features of Cisco Systems 3.5 is its enhanced network automation capabilities. Automation streamlines network management, allowing organizations to apply consistent policies across their infrastructure while minimizing human error. This version employs advanced algorithms and machine learning to predict and rectify network issues proactively. With automation tools, network administrators can configure, monitor, and troubleshoot their networks with unprecedented efficiency.

Another notable characteristic of Cisco Systems 3.5 is its integration of artificial intelligence and machine learning into networking processes. The incorporation of AI enhances decision-making by analyzing vast amounts of network data, identifying patterns, and offering insights that help ensure optimal performance. This predictive analytics capability allows organizations to predict potential disruptions before they impact operations.

Security is a major focus in Cisco Systems 3.5. The platform introduces advanced threat detection and response systems that utilize deep learning to identify and mitigate emerging threats in real-time. Enhanced encryption protocols ensure that data transmitted over the network remains secure, protecting sensitive information from cyber threats. The integrated security features ensure compliance with various regulatory standards, a crucial requirement for businesses across multiple sectors.

The platforms' support for Software-Defined Networking (SDN) allows for dynamic resource allocation and traffic management. This flexibility enables organizations to adjust their network resources quickly in response to changing demands, leading to improved efficiency and reduced operational costs. Cisco Systems 3.5 also supports multicloud environments, facilitating seamless integration with cloud services such as AWS, Google Cloud, and Microsoft Azure.

Moreover, Cisco Systems 3.5 offers robust telemetry features, providing detailed real-time insights into network performance and health. This data-driven approach allows organizations to make informed decisions regarding capacity planning and resource optimization.

In summary, Cisco Systems 3.5 combines cutting-edge technologies such as AI, machine learning, and SDN to deliver a comprehensive networking solution. With its focus on automation, enhanced security, and multicloud support, this version is well-suited for modern enterprises looking to enhance their network infrastructure and security measures. As organizations continue to evolve in a digital-centric world, Cisco Systems 3.5 stands out as a critical tool to achieve connectivity and security goals effectively.
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