Troubleshooting the Processor Subsystems

Troubleshooting the Processor Subsystems

The processor subsystem consists of the I/O controller card, network processor card, and all port adapters in the router shelf, and the dial shelf controller card, modem cards, and trunk cards in the dial shelf. The following sections contain specific troubleshooting information for each of these components.

The router shelf I/O controller card and network processor card are required system components. The system cannot operate unless the I/O controller card and network processor card are installed properly; however, the system can operate without any port adapters installed as long as none are in partial contact with the midplane pins. A port adapter that is partially connected to the midplane causes the router shelf to crash or to hang. Therefore, first ensure that the I/O controller card and the network processor card are installed properly and that the system software has initialized successfully. Then, if necessary, you can troubleshoot individual router shelf port adapters, dial shelf controller cards, modem cards, or trunk cards.

Troubleshooting the Router Shelf Processor Subsystem

The following sections describe troubleshooting procedures for the router shelf I/O controller card, the network processor card, and the port adapters.

Troubleshooting the I/O Controller Card

These procedures assume that the I/O controller card, network processor card, and router shelf itself are in the original factory configuration and that you have not made changes to your configuration file.

If the I/O controller card LEDs do not light as expected (refer to the section “Identifying Startup

Problems” in this chapter), check the following items to help isolate the problem:

Is the I/O power OK LED on?

If yes, the router has booted successfully.

If this LED remains OFF at system startup, either there is a problem with the power supply (it is damaged or not connected to the router midplane), or the network processor card or I/O controller card is not connected to the router midplane.

Do all I/O controller card LEDs remain off when the system powers ON?

If the LEDs remain off, first refer to the sections “Troubleshooting the Power Subsystems” and “Troubleshooting the Cooling Subsystems” in this chapter to ensure that both the fans and the power supply are functioning properly.

If the power supply and fans appear operational but none of the I/O controller card LEDs are on, ensure that an improperly connected I/O controller card or port adapter has not hung the system. Tighten all captive installation screws, and then restart the system.

With the power supply powered OFF, reseat the I/O controller card in its slot and restart the router.

Is the I/O controller card enabled LED on?

If yes, the system software has initialized successfully and the system is operational.

If the enabled LED remains off, the system detected a processor hardware failure. (This LED should be on in normal operation.) Proceed to the section “Troubleshooting the Network Processor Card” to continue troubleshooting.

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Cisco Systems AS5800 manual Troubleshooting the Processor Subsystems, Troubleshooting the Router Shelf Processor Subsystem

AS5800 specifications

Cisco Systems has long been a leader in the networking and telecommunications field, and its AS5800 series of routers exemplify this tradition. The AS5800, along with the AS5850, AS5350, AS5400, and AS5300, provides robust solutions for service providers and enterprise-level networking applications. Each of these models has distinct features and characteristics that cater to the evolving demands of internet traffic and data processing.

The Cisco AS5800 is designed for high-capacity routing and optimized for broadband services. It supports a wide range of services, including voice, data, and video applications, making it a versatile option for service providers looking to deliver integrated solutions. It is equipped with advanced quality of service (QoS) features that ensure bandwidth is allocated effectively, holding strong even under heavy traffic conditions.

In comparison, the AS5850 offers superior processing capabilities and is typically utilized in larger-scale implementations. This model supports high-density interfaces, allowing numerous connections without compromising performance. Its architecture includes enhanced MPLS (Multiprotocol Label Switching) support, enabling more efficient traffic management and better utilization of network resources.

The AS5350 is known for its scalability and energy efficiency, ideal for voice-over-IP (VoIP) and media gateway applications. It supports various telephony features, such as protocol interworking and transcoding, making it a preferred choice for organizations focusing on digital voice technologies. The AS5300, while slightly older, continues to be a valuable asset for less demanding networks, offering reliable performance with VoIP capabilities and basic data applications.

The AS5400 bridges the gap between high-performance routing and operational efficiency. It incorporates Cisco's proprietary technologies to ensure seamless connectivity and robust failover systems. This model is highly regarded for its security features, protecting network integrity and providing peace of mind for businesses relying on sensitive data transfer.

Overall, Cisco’s AS5800 series showcases a progressive evolution of routing capabilities with enhanced features tailored for resilience, scalability, and performance. These routers not only address the technical needs of modern networks but also strategically position organizations for future growth in an increasingly digital world. Each model, with its unique attributes, continues to support the varied demands of global communication infrastructures.