Chapter 3 Troubleshooting

Diagnosing Problems

Table 3-2 Common Problems and Their Solutions (continued)

Symptom

Possible Cause

Resolution

 

 

 

No Connectivity.

Incorrect or bad cable.

 

 

The following are indicated by no link at

 

 

both ends:

 

 

A crossover cable was used when a

For the correct pinouts and

 

straight-through was required or

the proper application of

 

vice-versa.

crossover or straight-through

 

 

cables, see the “Crossover

 

 

and Straight-Through Cable

 

 

Pinouts” section on page B-3.

 

The cable is wired incorrectly.

Replace with a tested good

 

 

cable.

 

STP checking for possible loops.

Wait 30 seconds for the LED

 

 

to turn green.

 

 

 

Amber System LED.

Corrupted software.

Use the EXEC show POST

 

 

command to see which POST test

 

 

failed.

 

 

 

Amber Expansion Slot

Module not seated in expansion slot.

Tighten the thumb screws on the

LED.

 

module front panel.

 

 

 

Unreadable Characters

Incorrect baud rate.

Reset the emulation software to

on the Management

 

9600 baud.

Console.

 

 

 

 

 

LRE LED not turned on.

Telephone cable loose or not connected

Reseat phone cable into phone

 

properly.

wall jack and Cisco 575 LRE.

 

 

 

 

Telephone cable defective.

Replace telephone cable.

 

 

 

 

Cable trunking defective.

Repair cable trunking or select an

 

 

alternative pair.

 

 

 

 

Cisco 575 LRECPE not communicating

Verify switch and upstream

 

with or might be attempting to exceed

network status.

 

bandwidth selected by the

 

 

Catalyst 2900 LRE XL switch.

 

 

 

 

 

 

Catalyst 2900 Series XL Hardware Installation Guide

 

 

 

 

 

 

78-6461-03

 

 

3-5

 

 

 

Page 81
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Cisco Systems 2900 Series XL manual Incorrect or bad cable

2900 Series XL specifications

Cisco Systems 2900 Series XL routers are integral components of the Cisco Integrated Services Router (ISR) portfolio, designed to support various networking needs for small to medium-sized enterprises. These routers provide an extensive set of features tailored for voice, video, data, and wireless services, making them a versatile choice for organizations looking to streamline their network infrastructure.

One of the standout features of the 2900 Series XL is its modularity. This router is equipped with multiple interface card slots that allow users to customize and scale their network based on current and future requirements. The modular design offers flexibility in integrating various WAN interfaces such as T1/E1, DSL, and Ethernet, enabling businesses to adapt to changing connectivity needs without requiring a complete hardware overhaul.

The 2900 Series XL also supports a wide range of advanced security features. With integrated security protocols, such as firewall capabilities, Intrusion Prevention Systems (IPS), and Virtual Private Network (VPN) support, these routers ensure that sensitive company data remains protected against potential threats. Furthermore, the routers come with Cisco’s Adaptive Security Algorithm, which helps to detect and mitigate real-time attacks.

Another significant characteristic of the Cisco 2900 Series XL is its support for unified communications. The routers have built-in voice capabilities, allowing them to function as a voice gateway. This facilitates features like VoIP (Voice over IP), video conferencing, and even multimedia communication. These tools enhance collaboration and connectivity among team members, contributing to a more productive work environment.

The 2900 Series XL routers also include Cisco's IOS Software, which provides a robust operating system with a rich set of features for routing, switching, and security functions. The software is continually updated to ensure the routers remain compatible with the latest technology and security standards, thereby extending their functionality and lifespan.

In terms of performance, the 2900 Series XL routers are designed for high throughput and low latency, making them suitable for bandwidth-intensive applications. Their architecture supports services such as advanced Quality of Service (QoS) and traffic shaping, ensuring that mission-critical applications receive the bandwidth priority they require.

Ultimately, Cisco's 2900 Series XL routers represent a reliable, flexible solution for organizations looking to enhance their networking capabilities. With their exceptional features, comprehensive security options, and support for diverse applications and services, they play a crucial role in the modern digital landscape.