![Juniper Networks Router Architecture [NGN Router OS] Scholarly Paper Presentation (In partial fulfillment for MS Degree in Computer Engineering) Advisor: Dr. Jeremy Allnutt Co-advisor: Dr BijanJabbari George Mason University, Fairfax, Virginia Lawrence Awuah lawuah@gmu.edu ljawuah@ieee.org Fall 2007](https://image.slidesharecdn.com/scholarlypaperslideslinkedin-12982367382837-phpapp02/85/Juniper-Networks-Router-Architecture-1-320.jpg)
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Juniper Networks Router Architecture
- 1. Juniper Networks Router Architecture [NGN Router OS] Scholarly Paper Presentation (In partial fulfillment for MS Degree in Computer Engineering) Advisor: Dr. Jeremy Allnutt Co-advisor: Dr BijanJabbari George Mason University, Fairfax, Virginia Lawrence Awuah lawuah@gmu.edu ljawuah@ieee.org Fall 2007
- 4. Specific TX Matrix & T640 Routing node Implementation
- 5. Packet Forwarding and ASIC Design
- 7. Routers operate in two different planes:Control Plane The control plane defines the part of the router architecture that is concerned with generating the networkrouting table. Control Plane processing leads to the construction of RIB and FIB in memory. Forwarding Plane The forwarding plane is responsible for packet forwarding. This planeis responsible for processing packets in hardware before forwarding them across the switch fabric from the ingress interface to the appropriate egress interface - HS packet processing.
- 10. Security
- 15. Expandable average lifetimeLeading to CAPEX & OPEX savings - replacing old equipment vs. installing new equipment every few years + operational cost.
- 19. A set of dynamically loadable applications with their own separate and protected memory spaces – security, flexibility, speed.
- 21. Minimal operating system kernel.
- 22. Most operating-system services are provided in user-mode - functions such as the host stack, device drivers, or file system run in user mode.
- 25. Graceful restart and gracefuldegradation capabilities.
- 26. Dynamic loading and start/stop capability allows frequent system refresh cycles.
- 28. Kernel protection and security.
- 31. T640 Routing Nodes (4 maximum)
- 32. maintains distributed packet forwarding decisions
- 33. also known as line-card chassis (LCCs) providing network interfaces for the routing matrix
- 34. A TX Matrix platform
- 35. executes the routing protocols for the routing matrix and maintains system state
- 36. provides services to switch fabric that interconnects the individual T640 routing nodes also know as the switch-card chassis (SCC)
- 37. A set of cables
- 43. Four operationally independent, identical and active switch planes.
- 45. Egress PFE drops packets if cells missing (assigned sequence #s).
- 47. Real-time CPU scheduling such as preemptive priority-based, preemptive kernel (for sensitive applications such as voice and video).