CCNP TSHOOT 6.0 - The Cisco Learning Network
CCNP TSHOOT 6.0 - The Cisco Learning Network
CCNP TSHOOT 6.0 - The Cisco Learning Network
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<strong>CCNP</strong>v6 <strong>TSHOOT</strong><br />
Section 2—Troubleshooting Reference Information<br />
General Troubleshooting Process<br />
As a general guideline, you can use the following general troubleshooting process described in the course.<br />
1. Define the problem (symptoms).<br />
2. Gather information.<br />
3. Analyze the information.<br />
4. Propose a hypothesis (possible cause).<br />
5. Test the hypothesis.<br />
6. Eliminate or accept the hypothesis.<br />
7. Solve the problem.<br />
8. Document the problem.<br />
Command Summary<br />
<strong>The</strong> table lists useful commands for this lab. <strong>The</strong> sample output is shown on following pages.<br />
Command Key Information Displayed<br />
show line vty 0<br />
show users<br />
show radius server-group all<br />
show radius statistics<br />
debug radius authentication<br />
show aaa servers<br />
show aaa method-lists all<br />
debug aaa authentication<br />
debug aaa authorization<br />
Displays the physical serial interface characteristics of a<br />
vty line as well as the transport input and output allowed<br />
(for example: Telnet or SSH).<br />
Displays device lines in use (for example: con, vty 0, vty<br />
1), the username logged in, and the IP address of the<br />
connected host.<br />
Displays the RADIUS servers defined in the group<br />
specified (default group is radius). <strong>The</strong> server IP address<br />
and port numbers are listed.<br />
Displays the RADIUS message statistics for<br />
authentication and accounting communication between<br />
the network device and the RADIUS server. Output<br />
includes packets with and without responses, response<br />
delay, and timeouts. Source port numbers are also listed.<br />
Displays real-time interaction and message exchange<br />
between the network device, the calling station, and the<br />
RADIUS server. Authentication success or failure is<br />
indicated.<br />
Displays AAA server host information, including type<br />
(RADIUS or TACACS), IP address, port numbers in use,<br />
and AAA requests, successes, and failures.<br />
Displays the names of AAA method lists currently<br />
defined, the type of validation in use, and the sequence<br />
of application (for example: server group, local, or none).<br />
Displays the method list defined and being used for AAA<br />
authentication (for example: TELNET_LINES).<br />
Displays the method list defined and being used for AAA<br />
authorization.<br />
All contents are Copyright © 1992–2010 <strong>Cisco</strong> Systems, Inc. All rights reserved. This document is <strong>Cisco</strong> Public Information. Page 9 of 22
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