Troubleshooting guide

B-1

ATM and Layer 3 Switch Router Troubleshooting Guide

OL-1969-01

APPENDIX

Troubleshooting TACACS+ and Recovering

Passwords

This chapter describes troubleshooting information relating to security implementations and contains the

following sections:

• Troubleshooting TACACS+ Problems, page B-1

• Recovering a Lost Password, page B-5

If you want detailed information about configuring and using TACACS+, refer to the

ATM Switch Router Software Configuration Guide and ATM Switch Router Command Reference

publications. For additional information about TACACS+, refer to the

Cisco IOS Security Configuration Guide and Cisco IOS Security Command Reference.

Troubleshooting TACACS+ Problems

The following sections describe problems with TACACS+ operation and possible solutions.

Errors Unarchiving Source File

Symptom: Errors are generated when unarchiving the TACACS+ archive file (tac_plus.2.1.tar).

Table B-1 outlines possible problems and describes solutions.

Table B-1 TACACS+: Errors Unarchiving Source File

Possible Problem Solution

Archive file was not transferred by

using FTP

binary (image) mode

1. FTP = File Transfer Protocol

The TACACS+ archive file must be transferred by using FTP binary (image) mode.

FTP the tac_plus.2.1.tar file again, using FTP binary transfer mode. From the FTP

command line, enter the image command to set the image mode. For other FTP

software, refer to your documentation for instructions on setting the image mode.

Insufficient disk space Make sure there is sufficient disk space for the expanded tac_plus.2.1.tar file. If

there is not enough space on your UNIX system, create enough free disk space to

accommodate decompression of the file. TACACS+ requires about 900 KB.