3Com MSR 50 Series Configuration Manual page 1787

Symptom3: A user is authenticated and authorized, but accounting for the user is
not normal.
Analysis:
1 The accounting port number is not correct.
2 Configuration of the authentication/authorization server and the accounting
server are not correct on the NAS. For example, one server is configured on the
NAS to provide all the services of authentication/authorization and accounting,
but in fact the services are provided by different servers.
Solution:
Check that:
1 The accounting port number is correctly set.
2 The authentication/authorization server and the accounting server are correctly
configured on the NAS.
Troubleshooting Refer to
HWTACACS fault.
"Troubleshooting RADIUS" on page 1786
Troubleshooting AAA/RADIUS/HWTACACS
if you encounter a HWTACACS
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