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Juniper Lightboard Series – Intro to Juniper Routing – Part 1
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What is Routing Engine in Juniper?
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Routing Engine Interface Ports
CONSOLE—Connects the Routing Engine to a system console through a serial cable with an RJ-45 connector. ETHERNET or MGMT—Connects the Routing Engine through an Ethernet connection to a management LAN (or any other device that plugs into an Ethernet connection) for out-of-band management.
What does a Routing Engine do?
The Routing Engine is a key component in the router. It is primarily responsible for the protocol intelligence of the router. Thus, it is responsible for creating a routing table, which consists of all routes learned by all protocols running on the router.
How do you change the Routing Engine on a juniper?
To change the default primary Routing Engine, include the routing-engine statement at the [ edit chassis redundancy ] hierarchy level in the configuration. To have the backup Routing Engine become the primary Routing Engine, use the request chassis routing-engine master switch command.
What is a forwarding engine?
The forwarding engine is the processing power on the line card. It consists of several custom ASICs, packet buffers, a CPU, and memory. The CPU runs a subset of the software on the route processor and has full control over all components on the line card.
What is nonstop routing in Juniper?
Nonstop active routing (NSR) uses the same infrastructure as graceful Routing Engine switchover (GRES) to preserve interface and kernel information. However, NSR also saves routing protocol information by running the routing protocol process (rpd) on the backup Routing Engine.
What is ASIC in Juniper?
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ASIC stands for Application Specific Integrated Circuit. The name already says it, it’s a chip with a very narrow use case, geared towards a single application. This is in stark contrast to a CPU (Central Processing Unit), or even a GPU (Graphics Processing Unit).
What is ASIC Juniper?
Juniper’s programmable Trio ASIC, originally developed for routing, has been repurposed for its latest campus and data center core switch offering, the EX9200. The Trio ASIC enables the data plane of EX9200 to be upgraded with software to support new network protocols, which can be used to deploy SDN services.
What are ASIC switches?
The ASIC, or Application Specific Integrated Circuit, is a special purpose sillicon chip. The ASIC achieves high forwarding speeds as packets pass through the forwarding plane. An ASIC in a general sense is not unique to networking. Many electronic devices use them for some specific purpose.
Is ASIC used in routers?
So how do modern routers like the Cisco ASR9K, or the Juniper MX series routers push terabits of throughput without breaking a sweat? They use ASIC’s. ASIC is an abbreviation for Application Specific Integrated Circuit.
What is ASIC in Cisco switch?
An ASIC stands for “Application Specific Integrated Circuit“. As the name suggests, an ASIC is a specialized piece of hardware circuitry designed to perform a particular operation in a highly efficient way. For example, you may have an ASIC that performs encryption and decryption.
What are two functions of the packet forwarding engine?
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The Packet Forwarding Engines provide the Layer 2 and Layer 3 packet switching, forwarding, and route lookup functions. In a maximum configuration with eight Type 3 FPCs installed, the Packet Forwarding Engines can forward up to 640 million packets per second (Mpps) for all packet sizes.
What are two services performed by the packet forwarding engine choose two?
Packet forwarding, which provides route lookup, filtering, and switching on incoming data packets, and then directs outbound packets to the appropriate interface for transmission to the network. Provides control and monitoring functions for the device.
What are the functions of the Junos packet forwarding engine?
The Packet Forwarding Engine uses application-specific integrated circuits ( ASIC s) to perform Layer 2 and Layer 3 packet switching, route lookups, and packet forwarding. The Packet Forwarding Engine forwards packets between input and output interfaces.
What are two function of PFE?
On Juniper Networks routers, the PFE is designed to perform Layer 2 and Layer 3 switching, route lookups, and rapid forwarding of packets.
What are three functions of the re Juniper?
The RE’s primary functions are to manage the PFE, control the device’s software (Junos operating system), manage the command-line interface (CLI), provide troubleshooting tools, and maintain the route tables (both the route table and the route forwarding table).
What is packet forwarding engine?
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The Packet Forwarding Engine uses application-specific integrated circuits ( ASIC s) to perform Layer 2 and Layer 3 packet switching, route lookups, and packet forwarding. The Packet Forwarding Engine forwards packets between input and output interfaces.
What is forwarding engine?
The forwarding engine is the processing power on the line card. It consists of several custom ASICs, packet buffers, a CPU, and memory. The CPU runs a subset of the software on the route processor and has full control over all components on the line card.
What are two functions of the packet forwarding engine?
The Packet Forwarding Engines provide the Layer 2 and Layer 3 packet switching, forwarding, and route lookup functions. In a maximum configuration with eight Type 3 FPCs installed, the Packet Forwarding Engines can forward up to 640 million packets per second (Mpps) for all packet sizes.
What is PFE in networking?
The forwarding plane is referred to as the Packet Forwarding Engine (PFE), and the control plane is called the Routing Engine (RE).
What is ASIC in Juniper?
ASIC stands for Application Specific Integrated Circuit. The name already says it, it’s a chip with a very narrow use case, geared towards a single application. This is in stark contrast to a CPU (Central Processing Unit), or even a GPU (Graphics Processing Unit).
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