Contents

F I N A L D R A F T - C i s c o C o n f i d e n t i a l

Additional Sources for Information

6-1

 

 

 

 

 

Basic Troubleshooting Commands

6-1

 

 

 

 

 

Using show Commands to Display System Status and Configuration

6-2

Using the ping Command

6-2

 

 

 

 

 

 

Examples

6-2

 

 

 

 

 

 

 

 

Using the traceroute Command

6-3

 

 

 

 

 

Examples

6-3

 

 

 

 

 

 

 

 

Using debug Commands

6-3

 

 

 

 

 

 

Viewing a List of Debug Features

6-4

 

 

 

Enabling Debugging for a Feature

6-4

 

 

 

Viewing Debugging Status

6-5

 

 

 

 

 

Disabling Debugging for a Service

6-5

 

 

 

Disabling Debugging for All Services Started at the Active Terminal Session 6-5

Disabling Debugging for All Services Started at All Terminal Sessions 6-6

Configuration Error Messages

6-6

 

 

 

 

 

 

Configuration Failures During a Commit Operation

6-6

 

 

!Configuration Errors at Startup

6-7

 

 

 

 

 

Memory Warnings in Configuration Sessions

6-7

 

 

 

Understanding Low-Memory Warnings in Configuration Sessions

6-7

“WARNING! MEMORY IS IN MINOR STATE”

6-8

 

 

“ERROR! MEMORY IS IN SEVERE (or CRITICAL) STATE”

6-8

 

Viewing System Memory Information

6-8

 

 

 

 

Removing Configurations to Resolve Low-Memory Warnings

6-9

 

Clearing a Target Configuration

6-10

 

 

 

 

Removing Committed Configurations to Free System Memory

6-10

Rolling Back to a Previously Committed Configuration

6-10

 

Clearing Configuration Sessions

6-11

 

 

 

Contacting TAC for Additional Assistance

6-11

 

 

 

Interfaces Not Coming Up

6-11

 

 

 

 

 

 

 

Verifying System Interfaces

6-12

 

 

 

 

 

A P P E N D I X A

Understanding Regular Expressions, Special Characters, and Patterns A-1

 

Contents A-1

 

 

 

 

Regular Expressions

A-1

 

 

 

Special Characters

A-2

 

 

 

Character Pattern Ranges

A-2

 

Multiple-Character Patterns

A-3

 

 

 

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

OL-17502-01

 

 

 

 

 

 

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Cisco Systems A9KMOD80TR, ASR 9000, A9K24X10GETR manual Using the ping Command Examples
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A9KMOD80TR, A9K24X10GETR, ASR 9000 specifications

Cisco Systems has long been a leader in networking technology, providing cutting-edge solutions for service providers and enterprise organizations alike. Among their standout products is the Cisco ASR 9000 Series Aggregation Services Routers, notably the A9K24X10GETR and the A9KMOD80TR models. These routers are engineered to deliver unmatched performance, scalability, and versatility for networks that require high bandwidth and low latency.

The Cisco ASR 9000 Series is built for the needs of today's complex service provider and enterprise networks. A significant feature of the A9K24X10GETR is its 24-port 10-Gigabit Ethernet module. This functionality allows for high-density connectivity, making it ideal for aggregating numerous connections to different parts of a network while maintaining optimal performance. Whether used for Internet service providers delivering high-speed connectivity or for enterprises looking to connect multiple branches, the A9K24X10GETR provides robust and reliable data transmission.

Further enhancing the capabilities of the ASR 9000 is the A9KMOD80TR module, which supports an extensive range of services. This module is designed to run a variety of technologies, including Layer 2 and Layer 3 services, MPLS (Multiprotocol Label Switching), and IPv6. Its ability to integrate seamlessly into existing infrastructures while providing the advanced features customers demand makes it an invaluable asset for network engineering teams.

Another cutting-edge technology present in the ASR 9000 Series is its support for eBGP (External Border Gateway Protocol), which plays a critical role in managing traffic across multiple networks. The routers are equipped with advanced telemetry features, empowering operators with real-time insights into network performance and health. Additionally, they come with integrated security features that protect against DDoS threats and other vulnerabilities.

In summary, Cisco's ASR 9000 Series, particularly the A9K24X10GETR and A9KMOD80TR, combines high-density connections, extensive service support, and advanced security and telemetry capabilities. These routers are perfect for demanding environments where reliable performance and adaptability are crucial. With their focus on innovation and performance, Cisco continues to shape the future of networking technology.
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