Replace an FPC in an M20 Router

3.Grasp the front of the FPC with both hands and align the rear with the guides at the sides of the FPC slot in the chassis.

4.Slide the FPC straight into the card cage until it contacts the midplane.

When about 1 in. (2.5 cm) of the FPC remains outside the slot, adjust the insertion speed so that it takes between 1 and 15 seconds for the FPC to contact the midplane.

Completing the insertion too quickly or too slowly can cause the router to reset.

5.Push the ends of the extractor clips, located at the left and right ends of the FPC, inward toward the face of the FPC. See Figure 8.

6.Tighten the thumbscrews at the left and right ends of the FPC.

7.If any of the PICs on the FPC use fiber-optic cable, remove the rubber safety cap from each transceiver and the end of each cable.

Do not look directly into the ends of fiber-optic cables or into the transceivers on the PIC faceplate. Single-mode fiber-optic cable and the PICs that use it (such as ATM and SONET/SDH interfaces) emit laser light that can damage your eyes.

8.Insert the appropriate cables into the cable connector ports on each PIC on the FPC. Secure the cables so that they are not supporting their own weight. Place excess cable out of the way in a neatly coiled loop, using the cable management system. Placing fasteners on a loop helps to maintain its shape.

Do not let cable hang free from the connector. Do not allow fastened loops of cable to dangle from the ladder rack, because this stresses the cable at the fastening point.

Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

9.If installing multiple FPCs, repeat Steps 2 through 8 for each one. Wait 30 seconds after installing each FPC to allow the FPC and PICs to come online.

•

FPC Installation Instructions	11

M40e, M40 specifications

Juniper Networks M40 and M40e are high-performance, modular routers designed to provide scalability, flexibility, and advanced capabilities for service providers and large enterprises. These platforms have made a significant impact in the networking industry due to their robust architecture and rich feature set.

The Juniper M40 was introduced as a key player in the routing landscape, emphasizing performance and reliability. It is based on the innovative Junos operating system, which enables operators to manage network resources effectively. The M40 router features a flexible modular design, allowing for the installation of various interface cards that support multiple protocols and speeds. This versatility is crucial for adapting to evolving network demands.

One of the standout features of the M40 is its high throughput capability, supporting up to 40 Gbps with exceptional performance under heavy loads. This is complemented by advanced queuing and scheduling options that ensure efficient traffic management. The M40 also implements sophisticated routing protocols, such as BGP, OSPF, and MPLS, enabling service providers to enhance their network infrastructure with robust routing features.

The M40e variant enhances the original model with additional features and improved performance metrics. It is built for even greater scalability, supporting more interface types and higher capacities. The enhanced hardware of the M40e allows it to process data packets with lower latency, ensuring optimized performance for real-time applications such as voice and video.

Both M40 and M40e routers utilize a redundant architecture, providing high availability and fault tolerance. This is crucial for mission-critical applications where downtime can lead to significant operational disruptions and financial losses. The routers also boast advanced security features, including support for IPsec and various access control mechanisms, ensuring data integrity and confidentiality across the network.

In summary, the Juniper Networks M40 and M40e routers represent a significant evolution in networking technology. Their modular architecture, high throughput capabilities, advanced routing protocols, and robust security features make them ideal choices for service providers and enterprises looking to build resilient and high-performance networks. With their proven reliability and performance, these routers continue to serve as a foundation for modern networking solutions.