Chapter 4 Configuring Additional Router Features

 

Configuring Logging and Logging Correlation

 

 

 

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

 

 

 

 

 

 

Command or Action

Purpose

Step 4

 

 

logging console [severity]

Logs messages on the console.

 

 

 

• When a severity level is specified, only messages at

 

 

Example:

that severity level are logged on the console.

 

 

RP/0/RSP0/CPU0:router(config)# logging console

• See Table 4-2for a summary of the logging severity

 

 

emergencies

 

 

levels.

 

 

 

Step 5

 

 

logging buffered [severity buffer-size]

Copies logging messages to an internal buffer.

 

 

 

• Newer messages overwrite older messages after the

 

 

Example:

buffer is filled.

 

 

RP/0/RSP0/CPU0:router(config)# logging buffered

• Specifying a severity level causes messages at that

 

 

1000000

 

 

level and numerically lower levels to be logged in an

 

 

 

 

 

 

internal buffer. See Table 4-2for a summary of the

 

 

 

logging severity levels.

 

 

 

• The buffer size is from 4096 to 4,294,967,295 bytes.

 

 

 

Messages above the set limit are logged to the

 

 

 

console.

Step 6

 

 

commit

Commits the target configuration to the router running

 

 

 

configuration.

 

 

Example:

 

 

 

RP/0/RSP0/CPU0:router(config)# commit

 

Step 7

 

 

end

Ends the configuration session and returns to EXEC

 

 

 

mode.

 

 

Example:

 

 

 

RP/0/RSP0/CPU0:router(config)# end

 

Step 8

 

 

show logging

Displays the messages that are logged in the buffer.

 

 

Example:

 

 

 

RP/0/RSP0/CPU0:router# show logging

 

 

 

 

 

Examples

In the following example, basic message logging is configured:

RP/0/RSP0/CPU0:router# configure

RP/0/RSP0/CPU0:router(config)# logging 10.1.1.1

RP/0/RSP0/CPU0:router(config)# logging trap debugging

RP/0/RSP0/CPU0:router(config)# logging console emergencies

RP/0/RSP0/CPU0:router(config)# logging buffered 1000000

RP/0/RSP0/CPU0:router(config)# commit

RP/0/RSP0/CPU0:router(config)# end

RP/0/RSP0/CPU0:router# show logging

Syslog logging: enabled (162 messages dropped, 0 flushes, 0 overruns)

Console logging: level emergencies, 593 messages logged

Monitor logging: level debugging, 0 messages logged

Trap logging: level debugging, 2 messages logged

Logging to 10.1.1.1, 2 message lines logged

Buffer logging: level debugging, 722 messages logged

Log Buffer (1000000 bytes):

 

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

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Cisco Systems ASR 9000, A9K24X10GETR Logs messages on the console, When a severity level is specified, only messages at
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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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