Chapter 8 Troubleshooting Cisco 1800 Series Routers (Modular)

Reading LEDs

There may be a problem with the card or cable. See the “Cisco One-Year Limited Hardware Warranty Terms” and the “Obtaining Documentation and Submitting a Service Request” sections of the “Introduction to Cisco 1800 Series Routers (Modular) Hardware Documentation” document for warranty and customer service contact information.

Reading LEDs

The LEDs on the router enable you to determine router performance and operation. The System Power (SYS PWR) LED and the System Activity (SYS ACT) LED are on the front panel; all the other LEDs are on the back panel.

Table 8-1

LED Indicators on Cisco 1800 Series Routers

LED Indicator

State

Meaning

Possible Causes and Corrective Actions

SYS PWR

Off

No output is coming from the

Power is not switched on at the

 

 

internal power supply.

router.

 

 

 

Power is not available from the

 

 

 

source.

 

 

 

Faulty input power wires or

 

 

 

connections are missing.

 

 

 

Failed power supply in the router. To

 

 

 

replace the internal power supply,

 

 

 

call your Cisco technical support

 

 

 

representative.

 

 

 

 

 

Solid green

Router is receiving power, and

Normal indication. No action is

 

 

the internal power supply is

required.

 

 

functional.

 

 

 

 

 

 

Blinking

During bootup, router is

Normal indication. No action is

 

green

booting up normally.

required.

 

 

 

 

 

 

After bootup, router is

See the router rebooting and

 

 

operating in ROM monitor

ROM monitor information in the

 

 

mode.

Cisco 1800 series software

 

 

 

configuration documentation.

 

 

 

 

SYS ACT

Off

No packet transfers are

Interface card connections are not

 

 

occurring.

functional.

 

 

 

Router is not configured properly.

 

 

 

Check configuration, and make

 

 

 

corrections as necessary.

 

 

 

 

 

Blinking

System is actively transferring

Normal indication. No action is

 

 

packets and monitoring

required.

 

 

internal activity

 

 

 

 

 

Cisco 1800 Series Routers (Modular) Hardware Installation Guide

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Cisco Systems CISCO1841-HSEC/K9-RF manual Reading LEDs

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.