3Com 10014299 manual Users Radius authentication is always rejected, Can

should be noted that undo aaa authentication-scheme ppp default delete the default method; it can only restore the local authentication.

Troubleshooting AAA and RADIUS 545

unavailable. Moreover as the radius timer quiet command has not been configured (defaulted as 5 minutes), or a relative long dead-time has been configured, the system does not know that the server has recovered. Use undo radius server command to delete the original RADIUS server, and reconfigure it by radius server command to activate the server immediately.

5If none of the above operations work, check whether the RADIUS server has been configured correctly, and whether the modification has been activated

A user's RADIUS authentication is always rejected

Follow the steps below.

1Check whether the user name, password and service type are set correctly on RADIUS server.

2Check whether the RADIUS server can be pinged through Check whether the address, port number and key of RADIUS server configured on the router are identical with those of the RADIUS server in use.

3Use the radius server command to reconfigure the RADIUS server. Because of the communication failure with the server, RADIUS server may be considered by the system as unavailable by the system. And as the radius timer quiet command has not been configured (defaulted as 5 minutes), or a relative long dead-time has been configured, the system does not know that the server has recovered. Use undo radius server command to delete the original RADIUS server, and reconfigure it by radius server command to activate the server immediately.

4Check whether the RADIUS server has been configured correctly, and whether the modification made just now has been activated.

A connected user cannot be seen in display aaa user

Follow the steps below.:

1Check whether AAA has been enabled.

2Check whether the authentication methods contain "none", because users using none method will not be displayed in the command display aaa user.

No authentication is configured, yet users are still authenticated

Follow the step below:

1AAA has been enabled, and the default authentication method in AAA default

authentication method list is “local”. To disable the authentication, aaa authentication-scheme ppp default none should be configured. Meanwhile, it

can