Troubleshooting the Power Subsystems

—Dial shelf controller card—Powers ON first, followed by remaining logic cards. The PWR and MBus LEDs should light. The remaining four alarm LEDs should all briefly flash on and then turn off.

If the MBus LED remains off but the power LED is on, there might be a problem with the MBus power supply on the card. Replace the card.

—Trunk card—At initial power ON, all LEDs light while the system runs a series of diagnostics. After the system passes initial diagnostics, all LEDs go off. The power, host CPU, and framer CPU LEDs then light to indicate that the trunk card is operating properly.

—Modem card—During normal operation, all five LEDs light at system power up. When the modem card CPU software image starts running, it shuts off the modem LED. The power, host CPU, and modem LEDs then light to indicate that the modem card has passed diagnostics and is operating properly.

If the dial shelf processor component LEDs do not light as described, proceed to the section “Troubleshooting the Processor Subsystems.”

Troubleshooting the Power Subsystems

The Cisco AS5800 is designed to minimize problems in the power subsystem. The power subsystem includes the router shelf power supplies, the dial shelf PEMs and filter module, and the AC-input power shelf (if used).

The access server comes with two DC power supplies in both the router shelf and the dial shelf, which allow you to replace power supplies while the system is operating. However, if you are using an AC-configured system and you discover a faulty PEM, you must power off the system before performing a replacement.

Caution If your system requires the AC-input power shelf for AC-to-DC conversion, you should schedule a time for system maintenance and replace the PEM at that time. Refer to the document AC-Input Power Shelf and Power Supply Installation and Replacement (Part Number 78-4659-xx) for installation and replacement instructions.

The failure of a single power supply in the router shelf, the dial shelf, or the AC-input power shelf, if used, will not stop the access server from operating; however, to maintain power redundancy, both power supplies in each unit must be receiving power.

Hardware Troubleshooting 5-7

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Cisco Systems AS5800 manual Troubleshooting the Power Subsystems
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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.
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