Session Management

Chapter 2 Understanding Cisco Access Registrar

Program Flow

Action	Explanation

Determines whether to	The Service name defined in
perform authorization.	/Radius/DefaultAuthorizationService, if different than
	the Authentication Service.

*Executes the	A script referred to in
Service’s incoming	/Radius/Services/<Name>/IncomingScript.
script.

Performs	Checks that the Service type is defined in
authorization.	/Radius/Services/<Name>/<Type>.

*Executes the	A script referred to in
Service’s outgoing	/Radius/Services/<Name>/OutgoingScript.
script.

The Session Management feature requires the client (NAS or proxy) to send all RADIUS accounting requests to the Cisco Access Registrar server performing session management. (The only exception is if the clients are USR/3Com Network Access Servers configured to use the USR/3Com RADIUS resource management feature.) This information is used to keep track of user sessions, and the resources allocated to those sessions.

When another accounting RADIUS server needs this accounting information, the Cisco Access Registrar server performing session management may proxy it to this second server.

Table 2-5describes how Cisco Access Registrar handles session management.

	Table 2-5 Session Management Processing

Action		Explanation

Determines whether		The session management defined in the Environment
to perform session		dictionary variable Session-Manager.
management.
management.		The session management name referred to in
		The session management name referred to in
		/Radius/DefaultSessionManager.

Performs session		Selects Session Manager as defined in
management.		/Radius/SessionManagers/<Name>.

Performs resource		Directs the request to the appropriate Resource manager
management.		listed in
		/Radius/SessionManagers/<Name>/ResourceManagers/<
		Name>, which then allocates or checks the resource
		according to the type listed in
		/Radius/ResourceManagers/<Name>/<Type>.

Sends an		Creates and formats the response, and sends it back to the
Access-Accept.		client (NAS).

Failover by the NAS and Session Management

When a Network Access Server’s primary RADIUS server is performing session management, and the NAS determines the server is not responding and begins sending requests to its secondary RADIUS server, the following occurs:

Cisco Access Registrar 3.5 Concepts and Reference Guide

	OL-2683-02	2-7

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.

Action

/Radius/Services/<Name>/OutgoingScript.

script.