Chapter 6 Troubleshooting the Cisco IOS XR Software

Basic Troubleshooting Commands

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

Viewing Debugging Status

Type the show debug command to display the debugging features enabled for your terminal session. The terminal session is labeled tty and represents your connection to the router through a specific port, which might be the console port, auxiliary port, or Management Ethernet interface. In the following example, the command display indicates that debugging is enabled for two features (AAA and ipv4 io icmp) from a terminal session on the console port of RSP1:

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

#### debug flags set from tty 'con0_RSP1_CPU0' ####

aaa all flag is ON

ipv4 io icmp flag is ON

RP/0/RSP0/CPU0:router# no debug aaa all

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

#### debug flags set from tty 'con0_RSP1_CPU0' ####

ipv4 io icmp flag is ON

The preceding example is for a Cisco CRS-1 router. On a Cisco XR 12000 Series Router, the slot number of the tty ID is 0 or 1 instead of RSP0 or RSP1.

Type the show debug conditions command to display the conditional debugging status. For example:

RP/0/RSP0/CPU0:router# show debug conditions

#### debug conditions set from tty 'con0_RSP1_CPU0' ####

interface condition is ON for interface 'gi0/2/0/1'

Disabling Debugging for a Service

Use the no form of the debug command or the undebug command to turn off debugging for a service or subsystem.

In the following example, the no debug command disables debugging for the AAA feature:

RP/0/RSP0/CPU0:router# no debug aaa all

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

#### debug flags set from tty 'con0_RSP1_CPU0' ####

ipv4 io icmp flag is ON

You can also turn off debugging from the undebug mode, as shown in the following example:

RP/0/RSP0/CPU0:router# undebug

RP/0/RSP0/CPU0:router(undebug)# aaa all

RP/0/RSP0/CPU0:router(undebug)# exit

Disabling Debugging for All Services Started at the Active Terminal Session

Use the undebug all or no debug all command to turn off all debugging started by the active terminal session. For example, if you enter either of these commands while connected to the router through the console port on the active RP, all debug sessions started from that console port are disabled. In the following example, debugging for all services is disabled and then verified:

RP/0/RSP0/CPU0:router# undebug all

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

No matching debug flags set

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

 

OL-17502-01

6-5

 

 

 

Page 126 Page 128
Page 127
Image 127
Cisco Systems A9K24X10GETR, ASR 9000, A9KMOD80TR manual Viewing Debugging Status, Disabling Debugging for a Service
Page 126 Page 128

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.
Top Page Image Contents