Chapter 3 Troubleshooting

Problem-Solving

Table 3-1 Blinking Patterns of the OK LED

Number of Blinks

Meaning

 

 

2

The 860P dual-port RAM (DPRAM) failed.

 

 

3

The parameter RAM area of the 860P DPRAM failed.

 

 

4

The 860P system protection control register has a write

 

failure.

 

 

5

The router cannot detect the dynamic RAM (DRAM).

 

 

6

The user programmable machine has a write failure.

 

 

9

The router DRAM failed.

 

 

Troubleshooting WICs and VICs

Use the show diag command to help determine problems with a card.

Router# show diag

 

 

Slot 0:

 

 

 

 

 

 

 

 

 

C1760 1FE VE 4SLOT DV Mainboard

Port adapter, 9 ports

 

 

Port adapter is analyzed

 

 

 

 

 

Port adapter insertion

time unknown

 

 

 

 

EEPROM contents at hardware discovery:

 

 

 

 

Hardware Revision

 

: 0.0

 

 

 

 

 

PCB Serial

Number

 

:

 

 

 

 

 

Part Number

 

 

 

: 00-0000-00

 

 

 

 

Fab Version

 

 

 

: 04

 

 

 

 

 

EEPROM format

version 4

 

 

 

 

 

 

EEPROM contents (hex):

 

 

 

 

 

 

0x00: 04

FF

40

03 16

41 00 00

C1 8B

00 00 00 30 30 30

 

 

 

0x10: 30

00

00

00 00

82 00 00

00 00

02 04 FF FF FF FF

 

 

0x20: FF

FF

FF

FF FF

FF FF FF

FF FF FF FF FF FF FF FF

 

 

0x30: FF

FF

FF

FF FF

FF FF FF

FF FF FF FF FF FF FF FF

 

 

0x40: FF

FF

FF

FF FF

FF FF FF

FF FF FF FF FF FF FF FF

 

 

0x50: FF

FF

FF

FF FF

FF FF FF

FF FF FF FF FF FF FF FF

 

 

0x60: FF

FF

FF

FF FF

FF FF FF

FF FF FF FF FF FF FF FF

 

 

0x70: FF

FF

FF

FF FF

FF FF FF

FF FF FF FF FF FF FF FF

 

 

Packet Voice DSP

Module Slot 0:

 

 

 

 

 

Hardware Revision

 

: 2.2

 

 

 

 

 

Part Number

 

 

 

: 73-3815-01

 

 

 

 

Board Revision

 

 

: A0

 

 

 

 

 

Cisco 1760 Modular Access Router Hardware Installation Guide

 

 

 

 

 

 

 

 

3-8

 

 

 

 

 

 

 

78-13342-03

 

 

 

 

 

 

 

 

 

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Cisco Systems 1760 manual Troubleshooting WICs and VICs, Number of Blinks Meaning

1760 specifications

The Cisco Systems 1760 series routers are part of Cisco’s popular line of integrated services routers, designed primarily for small to medium-sized businesses and branch offices. The 1760 series was introduced to provide robust connectivity and routing solutions that facilitate secure and reliable networking. Aimed at offering flexibility, these routers integrate multiple functionalities to enhance operational performance.

One of the main features of the Cisco 1760 router is its modularity. It supports various interface and service modules that allow for customization based on specific networking needs. This modular design enables businesses to expand their networking capabilities over time without necessitating a complete hardware overhaul. The router typically comes equipped with two WAN slots and numerous interface options, including Fast Ethernet and serial interfaces.

The 1760 series routers also support advanced security features, providing businesses with a secure environment for their data transmissions. Built-in firewall capabilities, along with support for Virtual Private Network (VPN) protocols, ensure that sensitive information remains protected. Furthermore, the integration of IPsec and MPLS security features assists organizations in maintaining secure and scalable connections across diverse networks.

Another characteristic of the Cisco 1760 is its support for various technologies, including Quality of Service (QoS). QoS functionality allows network administrators to prioritize traffic, ensuring that critical applications receive the bandwidth they require while minimizing latency. This ability is particularly valuable in environments where voice, video, and essential data applications compete for resources.

The router’s ease of management is also noteworthy. With Cisco’s IOS (Internetwork Operating System), the 1760 provides a user-friendly interface allowing for straightforward configuration and monitoring. The simplicity in managing the network devices helps reduce the burden on IT personnel and enhances overall operational efficiency.

Further enhancing the router’s capabilities is its support for voice over IP (VoIP) applications, making it an ideal choice for organizations looking to implement modern telephony solutions. The ability to support multiple voice channels while maintaining adequate data throughput positions the 1760 as an attractive option for businesses transitioning to unified communications.

In summary, the Cisco Systems 1760 series routers exhibit a harmonious blend of modularity, robust security, traffic management, and VoIP support. They effectively meet the demands of modern networking environments, making them a reliable choice for organizations aiming to streamline operations while ensuring secure connectivity. With their adaptable design, these routers can serve as a powerful backbone for enterprise networking needs.