Router User Manual

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Nortel Secure Router 8000 Series

Troubleshooting - VAS Contents

Issue 01.01 (30 March 2009)

Nortel Networks Inc.

Contents

About this document.......................................................................................................................1

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

1.1 AAA overview.............................................................................................................................................1-2

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

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

1.1.3 Schemes and modes ..........................................................................................................................1-5

1.1.4 Server templates ................................................................................................................................1-6

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

1.2.4 Troubleshooting procedure................................................................................................................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 HWTACAS authentication.............................................................................................1-17

1.4.1 Typical networking..........................................................................................................................1-17

1.4.2 Configuration notes.........................................................................................................................1-17

1.4.3 Troubleshooting flowchart ..............................................................................................................1-21

1.4.4 Troubleshooting procedure..............................................................................................................1-22

1.5 Troubleshooting cases ...............................................................................................................................1-23

1.5.1 FTP user fails to pass through RADIUS authentication..................................................................1-23

1.5.2 HWTACACS user fails to get the delivered address.......................................................................1-25

1.6 FAQs..........................................................................................................................................................1-26

1.7 Diagnostic tools.........................................................................................................................................1-30

1.7.1 Display commands ..........................................................................................................................1-30

1.7.2 Debugging commands.....................................................................................................................1-32

2 IPSec and IKE troubleshooting ...............................................................................................2-1

2.1 IPSec and IKE overview .............................................................................................................................2-3