3Com Switch 8800 Family IPsec Module Configuration and Command reference Guide

Troubleshooting AAA and RADIUS/HWTACACS Protocols 63
Check that:
1 The communication links (at both physical and link layers) between the NAS and
the RADIUS server work well.
2 The IP address of the RADIUS server is correctly configured on the NAS.
3 Authentication/Authorization and accounting UDP ports are set in consistency
with the port numbers set on the RADIUS server.
■ Symptom 3: A user passes the authentication and gets an authorization
already, but its charging bill cannot be sent to the RADIUS server.
Troubleshooting:
Check that:
1 The accounting port number is correctly set.
2 The authentication/authorization and accounting servers are correctly configured
on the NAS. For example, the fault can occur in the situation where one server is
configured on the NAS to provide all the services of authentication/authorization
and accounting, despite the fact that different server devices are used to provide
the services.
Troubleshooting the
HWTACACS Protocol
See the previous section if you encounter a HWTACACS fault.