Junos OS Architecture Flashcards
What are the main components of Junos OS architecture?
The main components of Junos OS architecture are the Control Plane, Data Plane, and Management Plane. The Control Plane manages routing, policies, and protocols; the Data Plane handles packet forwarding; and the Management Plane facilitates network management.
What role does the Control Plane play in Junos OS?
The Control Plane in Junos OS is responsible for decision-making processes such as routing, protocol management, and network topology maintenance.
What is the function of the Data Plane in Junos OS?
The Data Plane is responsible for forwarding traffic based on the decisions made by the Control Plane. It handles the actual packet processing and transmission.
What is the Management Plane in Junos OS?
The Management Plane is responsible for network management tasks such as configuration, monitoring, and troubleshooting. It provides tools for administrators to manage the network device.
How does Junos OS ensure the separation of the Control Plane and Data Plane?
Junos OS uses a multi-layered architecture that physically separates the Control Plane and Data Plane, allowing for better performance, scalability, and security by isolating packet forwarding from management and routing tasks.
What is the Junos OS kernel responsible for?
The Junos OS kernel is responsible for handling basic system operations, managing hardware resources, and controlling access to the underlying hardware.
What is the role of the Routing Engine in Junos OS?
The Routing Engine (RE) in Junos OS is responsible for handling the Control Plane operations, such as routing, network management, and running the Junos OS operating system.
What is the Packet Forwarding Engine in Junos OS?
The Packet Forwarding Engine (PFE) handles the Data Plane in Junos OS, where it processes and forwards packets based on the routing information provided by the Routing Engine.
What are the key features of Junos OS that contribute to its scalability?
Key features of Junos OS that contribute to scalability include its modular architecture, separation of planes, and high-performance hardware integration, allowing it to handle a large volume of traffic and routing decisions efficiently.
How does Junos OS ensure high availability in its architecture?
Junos OS ensures high availability through features like redundant Routing Engines, chassis clustering, and fast failover mechanisms, which minimize downtime in case of hardware or software failure.
