Router User Manual

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Nortel Secure Router 8000 Series

Troubleshooting - VAS Contents

Issue 01.01 (30 March 2009) Nortel Networks Inc. i

Contents

1 AAA troubleshooting................................................................................................................1-1

1.1 AAA overview...............................................................................................................................................1-1

1.1.1 AAA, RADIUS, and HWTACACS......................................................................................................1-2

1.1.2 Domains and address pool ...................................................................................................................1-4

1.1.3 Schemes and modes .............................................................................................................................1-4

1.1.4 Server templates...................................................................................................................................1-5

1.2 Troubleshooting local user authentication.....................................................................................................1-6

1.2.1 Typical networking ..............................................................................................................................1-6

1.2.2 Configuration notes..............................................................................................................................1-7

1.2.3 Troubleshooting flowchart ...................................................................................................................1-9

1.3 Troubleshooting RADIUS authentication ...................................................................................................1-10

1.3.1 Typical networking ............................................................................................................................1-11

1.3.2 Configuration notes............................................................................................................................1-11

1.3.3 Troubleshooting flowchart .................................................................................................................1-14

1.3.4 Troubleshooting procedure ................................................................................................................1-15

1.4 Troubleshooting cases .................................................................................................................................1-17

1.4.1 FTP user fails to pass through RADIUS authentication.....................................................................1-17

1.4.2 HWTACACS user fails to get the delivered address......................................................................... 1-17

1.5 FAQs ...........................................................................................................................................................1-19

1.6 Diagnostic tools...........................................................................................................................................1-22

1.6.1 Display commands.............................................................................................................................1-22

1.6.2 Debugging commands........................................................................................................................1-25