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

•Using debug Commands, page 6-3

Using show Commands to Display System Status and Configuration

Use show commands to check the status of various Cisco IOS XR software subsystems and services. Table 5-2lists some of the common show commands.

Using the ping Command

Use the ping command to diagnose network connectivity. In EXEC mode, enter a hostname or an IP address as an argument to this command. In administration EXEC mode, you can use the fabric or the control Ethernet network to ping other nodes.

The ping command sends an echo request packet to a destination, then awaits a reply. Ping output can help you evaluate path-to-destination reliability, delays over the path, and whether the destination can be reached or is functioning.

Each exclamation point (!) indicates receipt of a reply. A period (.) indicates the network server timed out while waiting for a reply. Other characters may appear in the ping output display, depending on the protocol type.

Examples

In the following example, a successful ping attempt is shown:

RP/0/RSP0/CPU0:router# ping 10.233.233.233

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.233.233.233, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/7 ms

In the next example, an unsuccessful ping attempt is shown:

RP/0/RSP0/CPU0:router# ping 10.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

The following example shows the output of ping through the fabric:

RP/0/RSP1/CPU0:router(admin)# ping fabric location 0/6/5

 

 

 

Src node:

529

:

0/RSP1/CPU0

 

 

 

 

 

 

Dest node:

109

:

0/6/5

 

 

 

 

 

 

Local node:

529

:

0/RSP1/CPU0

 

 

 

 

 

 

Packet cnt:

1

Packet size:

128

Payload ptn type: default (0)

 

 

 

Hold-off (ms):

300

Time-out(s):

2

Max retries: 5

 

 

 

Running Fabric node ping.

 

 

 

 

 

 

 

Please wait...

 

 

 

 

 

 

 

 

 

Src: 529:, Dest: 109,

Sent: 1, Rec'd: 1, Mismatched: 0

 

 

 

Min/Avg/Max RTT: 20000/20000/20000

 

 

 

 

 

 

Fabric node ping

succeeded for node: 109

 

 

 

 

 

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6-2

 

 

 

 

 

 

OL-17502-01

 

 

 

 

 

 

 

 

 

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Cisco Systems A9K24X10GETR, ASR 9000 manual Using the ping Command, Following example, a successful ping attempt is shown
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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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