Cisco Systems CISCO1841-HSEC/K9-RF manual Troubleshooting the Power and Cooling Systems

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Chapter 8 Troubleshooting Cisco 1800 Series Routers (Modular)

Problem Solving

When solving problems, consider the following router subsystems:

Power and cooling systems—External power source, power cable, router power supply, circuit breaker, and router fan. Also check for inadequate ventilation or air circulation.

Interface cards—LEDs on the interface cards help identify a failure.

Cables—External cables that connect the router to the network.

Troubleshooting the Power and Cooling Systems

Both the system LED and the fans can help you troubleshoot a power problem. Check the following items to help isolate the problem:

Normal Indications

With the power switch on, the normal indications are:

SYS PWR LED on green and continuous

Fan operating

Fault Indications

Check the following symptoms to locate or eliminate faults in the power and cooling systems:

With the power switch on, is the SYS PWR LED on?

If the LED is green and continuous, the router is receiving power and is functional.

If the LED is off, check the power source and power cable.

With the power switch on and the SYS PWR LED on and green, does the fan operate?

If no, check the fan.

If yes, the power system is functioning.

With the power switch on and the SYS PWR LED off, does the fan operate?

If yes, the router is receiving power. The fan is connected directly to the DC outputs of the power supply.

If no, check the power source and power cable.

Does the router shut down after being on a short time?

Check for an environmentally induced shutdown. See the next section, “Environmental Reporting Features, page 8-3.”

Check the environmental site requirements in the “General Site Requirements” section on page 3-3.

Check for a power supply failure by inspecting the SYS PWR LED on the front panel. If it is green, the power supply is functional.

Router partially boots, but LEDs do not go on.

Check for a power supply failure by inspecting the SYS PWR LED on the front panel of the router. If the SYS PWR LED is blinking or continuously green, the power supply is functional.

If the SYS PWR LED is not on, see “Cisco One-Year Limited Hardware Warranty Terms” section on page 1-14.

Cisco 1800 Series Routers (Modular) Hardware Installation Guide

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Contents Americas Headquarters Text Part Number OL-5876-03Copyright 2005-2008 Cisco Systems, Inc. All rights reserved Interfaces on the Cisco 1861 Integrated Services Router Site Log LED Indicators Modular Objectives Title Description AudienceOrganization Convention Description Safety WarningsConventions Bewaar Deze Instructies Aviso Instruções Importantes DE Segurança Warnung Wichtige SicherheitshinweiseAvvertenza Importanti Istruzioni Sulla Sicurezza Spara Dessa Anvisningar GEM Disse Anvisninger OL-5876-03 Related Documentation Cisco One-Year Limited Hardware Warranty Terms Duration of Hardware WarrantySearching for Cisco Documents Replacement, Repair, or Refund Policy for HardwareTo Receive a Return Materials Authorization RMA Number OL-5876-03 Overview of Cisco 1800 Series Routers Modular Hardware Features Product Serial Number Location,Cisco Product Identification Tool Product Serial Number LocationInterfaces Description Label Interfaces on the Cisco 1861 Integrated Services RouterInterfaces on the Cisco 1841 Router Model CompactFlash Memory Interface Cards AIMs Removable and Interchangeable ModulesMemory Color Description Location LED IndicatorsDescription Specification Chassis Ventilation Real-Time ClockChassis Views Chassis SecurityExample Interface NumberingSlot Number Slot Type Interface Numbering on the 1861 Integrated Services Router Specifications Regulatory ComplianceOL-5876-03 Safety Recommendations Safety with Electricity Preventing Electrostatic Discharge Damage Power Supply ConsiderationsGeneral Site Requirements Site Environment Installation ChecklistSite Configuration Site Log Task Verified by DateInspecting the Router Items in the Box for the Cisco 1841 RouterAssembly hardware screws OL-5876-03 Internal Components Plug-In ComponentsInterfaces on the Cisco 1861 Integrated Services Router Setting Up the Chassis Setting the Chassis on a DesktopAttaching Rack-Mount Brackets 1shows the bracketsInstalling the Router in a Rack Mounting the Chassis in a Rack TypicalWall-Mounting the Cisco 1841 Router Wall-Mounting the ChassisChassis Grounding Wall Router Mounting screws Wall-Mounting the Cisco 1861 Integrated Services Router Rack-Mounting the Cisco 1861 Integrated Services Router Wall-Mount Bracket for Power SupplyBrackets for Rack-Mounting Power Supply Installing the Chassis Ground Connection 11 Chassis Ground Connection on the Cisco 1841 Router 12 Attaching the Ground Wire to the Chassis OL-5876-03 Console and Auxiliary Port Considerations Console Port ConnectionsEthernet Connections Preparing to Connect to a NetworkAuxiliary Port Connections Serial Connections Configuring Serial ConnectionsSignaling Standards Supported Serial DTE or DCE DevicesDistance for Distance LimitationsAsynchronous/Synchronous Serial Module Baud Rates Low-Capacitance Cable Isdn BRI ConnectionsCSU/DSU Connections OL-5876-03 Power Connections Series Routers ModularPort Type, Color Connected to Cable Connecting WAN and LAN CablesPorts and Cabling Connecting to a Console Terminal or Modem Connection Procedures and PrecautionsConnecting to the Console Port Connecting to the Auxiliary PortConnecting a Modem to the Router OL-5876-03 Powering Up Cisco 1800 Series Routers Routers ModularChecklist for Power Up Power-Up ProcedureYourname con0 is now available Press Return to get started Verifying the LED Indicators on the 1841 Router Color StatusInitial Configuration Verifying the Hardware ConfigurationInitial Configuration of the Router Cisco Router and Security Device Manager Verifying the Initial ConfigurationCompleting the Configuration Powering up the Cisco 1861 Integrated Services Router Description BenefitsDescription Benefits Troubleshooting Cisco 1800 Series Routers Modular Problem SolvingNormal Indications Troubleshooting the Power and Cooling SystemsFault Indications Troubleshooting Cables, Connections, and Interface Cards Environmental Reporting FeaturesReading LEDs System Messages FDXExplanantion Recovering a Lost PasswordMore Troubleshooting Help Related Product Documentation Cisco Interface Cards Installation GuideInstalling WICs, VWICs, and HWICs Card guides Interface card Page OL-5876-03 Replacing CompactFlash Memory Cards 10-1Removing a CompactFlash Memory Card Using the Compact Flash GuardInstalling a CompactFlash Memory Card 10-210-3 10-4 11-1 11-2 Modules Internal to the Cisco 1841 RouterOpening the Chassis 11-3 Removing the Chassis ScrewLocating Modules 11-4Installing a Sodimm 11-5Installing an AIM 11-6Cisco Part Number Type Accessory Kit to UseInstallation Procedure 11-711-8 Location of Metal Standoff Attachment Locations11-9 Plastic Standoff OrientationConnecting the AIM to the System Board 11-1011-11 Closing the ChassisApplying the AIM Label 11-12 11 Closing the ChassisACT LED IN-1IN-2

CISCO1841-HSEC/K9-RF specifications

The Cisco Systems CISCO1841-HSEC/K9-RF is a versatile and robust router designed to meet the demands of small to medium-sized businesses and branch offices. This model is part of the Cisco 1800 Series Integrated Services Routers, which are known for their performance, security features, and scalability, making them ideal for organizations seeking to enhance their network infrastructure.

One of the main features of the CISCO1841-HSEC/K9 is its modular architecture. This design allows businesses to customize and expand their networks according to changing needs by adding various modules and interfaces. The router supports multiple WAN interfaces, which include serial, Ethernet, and DSL, providing flexible connectivity options to accommodate various networking scenarios.

The CISCO1841-HSEC/K9 also boasts an integrated security architecture. This router is equipped with advanced security features, including firewall capabilities, VPN support, and intrusion prevention systems. These technologies ensure that data is protected while being transmitted across the network. The built-in security features help organizations safeguard sensitive information against potential threats and cyberattacks.

In terms of performance, the CISCO1841-HSEC/K9 is powered by a high-speed processor and dynamic routing capabilities, which allow it to efficiently handle high volumes of traffic without compromising performance. The router supports various routing protocols, including EIGRP, OSPF, and BGP, facilitating seamless data flow and efficient route management.

Another noteworthy characteristic of the CISCO1841-HSEC/K9 is its support for voice and video services. This capability enables businesses to deploy unified communications applications, such as VoIP and video conferencing, enhancing collaboration among team members and improving overall productivity.

Moreover, the router is designed for easy management and monitoring. Cisco’s IOS software provides a user-friendly interface, allowing network administrators to configure, operate, and troubleshoot the network with ease. The router also supports Cisco’s Smart Install feature for simplified deployment and management.

In summary, the Cisco Systems CISCO1841-HSEC/K9-RF is a powerful and adaptable router that combines security, flexibility, and performance. Its modular design, robust security features, support for various routing protocols, and capabilities for multimedia applications make it a compelling choice for businesses looking to enhance their network infrastructure while addressing current and future demands.