Appendix A Troubleshooting

Reading Rear Panel LEDs

Table A-3 Cisco 3725 Router Rear-Panel Indicators (continued)

LED Indicator

 

State

Description

 

 

 

Fast Ethernet 0/0 100Mbps

Off

10-Mbps communication speed attained,

and

 

 

or no link established.

Fast Ethernet 0/1 100Mbps

 

 

Solid green

100-Mbps communication speed attained.

 

 

 

 

Figure A-4

Cisco 3745 Router Rear-Panel LEDs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ETM

NPA

 

AIM1 AIM0

 

 

 

 

 

 

 

FastEthernet 0/0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FastEthernet 0/1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER

 

SYS

 

 

 

 

 

 

 

 

 

CF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONN

 

 

 

 

SERIAL 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SEE

MANUAL

BEFORE

SERIAL 0

 

WIC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INSTALLATION

CONN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2T

TD

RD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LP

AL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER

 

 

 

 

 

 

 

 

 

 

SEE

MANUAL BEFORE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM

 

 

 

 

 

 

 

 

 

INSTALLATION

DSU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SERIAL 1

 

 

 

 

 

 

 

NM-

 

 

 

 

 

 

 

 

 

 

 

 

 

56K

 

CONN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S

 

 

SERIAL 0

 

 

 

 

 

 

 

HDV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANUAL BE

 

WIC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INSTALLATION

CONN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK 4

 

 

 

 

 

VWIC

 

 

AL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK 3

 

 

 

 

 

 

LP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK 2

 

 

2MFT-E1

 

 

SEE

 

 

NM-HDV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK 1

 

 

CTRLR

CD

 

MANUAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NM-HDV

 

 

 

 

 

 

BANK 0

 

 

CTRLR E1

INSTALLATION

 

 

 

 

 

 

 

 

 

 

ETM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NPA

AIM1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V0

 

 

 

 

 

 

 

 

 

 

 

AIM0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EN

BANK 4

 

 

 

 

 

VWIC

 

AL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK

 

 

 

 

 

LP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

BANK 2

 

 

2MFT-E1

 

 

 

SEE

 

 

BANK 4

 

 

 

 

 

 

 

 

AL

 

 

 

 

 

 

 

 

BANK 1

 

CTRLR E2

 

 

BMANUAL

 

BANK 3

 

 

 

 

VWIC

 

 

 

 

 

 

 

 

 

 

 

 

BANK 0

 

 

CTRLR E1

EFORE

 

 

 

BANK 2

 

 

2MFT-E1

 

LP

 

SEE

 

 

NM-HDV

 

 

 

 

 

 

 

 

INSTALLATION

 

 

 

 

BANK 1

 

 

CTRLR

CD

 

MANUAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK 0

 

 

CTRLR E1

INSTALLATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EN

BANK 4

 

 

 

 

 

VWIC

 

AL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK 3

 

 

 

 

LP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK 2

 

 

2MFT-E1

 

 

 

SEE

 

72083

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BANK

 

 

 

CD

 

 

MANUAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

BANK 0

CTRLR E2

 

 

BEFORE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CTRLR E1

INSTALLATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EN

 

Table A-4

Cisco 3745 Router Rear-Panel Indicators

 

 

 

 

 

 

LED Indicator

 

State

Description

 

 

 

 

 

 

POWER

 

Off

An error condition is detected in the operating ranges.

 

 

 

 

 

 

 

 

Solid green

Operating voltages on mainboard are within acceptable ranges.

 

 

 

 

 

 

SYS

 

Off

Router not receiving power.

 

 

 

 

 

 

 

 

Blinking green

Router running ROM monitor; no errors detected.

 

 

 

 

 

 

 

 

Solid green

Router operating normally.

 

 

 

 

 

 

 

 

Amber

Router receiving power but malfunctioning.

 

 

 

 

 

 

CF

 

Off

CF can be ejected; device is idle.

 

 

 

 

 

 

 

 

Solid or blinking green

Do not eject CF; device is busy.

 

 

 

 

 

Fast Ethernet 0/0 ACT

Off

Interface not receiving packets.

 

and

 

 

 

 

 

 

 

 

Solid or blinking green

Interface receiving packets.

 

Fast Ethernet 0/1 ACT

 

 

 

 

 

 

 

 

 

 

 

Fast Ethernet 0/0 LINK

Off

No link established.

 

and

 

 

 

 

 

 

 

 

Solid green

Link is established.

 

Fast Ethernet 0/1 LINK

 

 

 

 

 

 

 

 

 

 

 

Fast Ethernet 0/0 100Mbps

Off

10-Mbps communication speed attained, or no link established.

 

and

 

 

 

 

 

 

 

 

Solid green

100-Mbps communication speed attained.

 

Fast Ethernet 0/1 100Mbps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cisco 3700 Series Routers Hardware Installation Guide

 

 

 

 

 

 

 

 

 

OL-2180-08

 

 

 

 

A-7

 

 

 

 

 

 

 

Page 87
Image 87
Cisco Systems 3700 Series manual Power

3700 Series specifications

Cisco Systems 3700 Series routers are a pivotal part of Cisco's portfolio, designed for medium to large enterprises aiming to deliver secure and efficient networking capabilities. Introduced as a versatile solution, these routers provide a comprehensive blend of performance, scalability, and investment protection.

One of the standout features of the Cisco 3700 Series is its modular architecture, allowing organizations to customize their router according to specific needs. This modularity supports various modules for different functions, including voice, data, and video, making the 3700 Series an ideal choice for converged networking environments. Administrators can enhance functionality through an array of WAN and voice interface cards that adapt as the organization's needs evolve.

The 3700 Series is built on Cisco's IOS (Internetwork Operating System), ensuring robust and high-quality performance. It supports advanced routing protocols including EIGRP, OSPF, and BGP, facilitating efficient data transmission across diverse environments. This versatility helps organizations implement sophisticated multi-site connectivity and enables reliable performance in complex network scenarios.

Security is a paramount concern in modern networking, and the Cisco 3700 Series delivers with features such as integrated firewall services, VPN support, and intrusion detection capabilities. These security measures protect sensitive data and ensure secure communication between remote sites—critical in today’s cyber landscape.

Another key characteristic of the 3700 Series is its support for Quality of Service (QoS), which prioritizes time-sensitive traffic such as voice and video. By ensuring that critical applications receive the bandwidth they require, organizations can maintain the quality of service that their users expect.

Moreover, the Cisco 3700 Series is designed with redundancy in mind. Features like dual power supplies and hot-swappable fan trays enhance reliability and uptime, which are crucial for mission-critical applications.

Furthermore, energy efficiency is an increasingly important consideration in network design. The Cisco 3700 Series adheres to modern energy standards, helping reduce the overall carbon footprint while supporting high-performance capabilities.

In summary, the Cisco Systems 3700 Series routers stand out for their modularity, advanced routing capabilities, robust security features, and energy efficiency, making them an optimal choice for enterprises that not only need performance but also flexibility and reliability in their networking solutions. As businesses continue to evolve and adapt, the Cisco 3700 Series is a dependable partner in their connectivity journey, ensuring they can meet current demands while preparing for future challenges.