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Forum Replies

  1. Hi Hans
    You need to type ‘dot1x pae authenticator’ instead- it enables 802.1X authentication on the port with default parameters

  2. Hi Tayo,

    You can configure both RADIUS and TACACS+ on the device yes. You could use RADIUS for one thing and TACACS+ for another.

    AFAIK, you can’t use one and the other as fallback or something. When you specify a group, you have to pick one of the two:

    Switch(config)#aaa authentication login default group ?
      WORD     Server-group name
      ldap     Use list of all LDAP hosts.
      radius   Use list of all Radius hosts.
      tacacs+  Use list of all Tacacs+ hosts.

    You could however create one authentication list for TACACS+ and another one for RADIUS and use each for different purposes.


  3. First off if I post this in wrong place let me know and I will move the question to better forum area.

    I am studying AAA Authentication. I keep hearing it stressed to be aware that its best practice to put “local” on the end of your lines in case your tacacs server or radius server goes down.

    For example I setup switch and AAA Server and PC in Boson Simulator to play with and test:

    username brian  password brian
    aaa new-model
    aaa authentication login auth group tacacs+ local
    ... Continue reading in our forum

  4. Hi Brian,

    Good to hear you figured it out. The output of your Boson simulator was indeed that it was unable to connect so this didn’t have anything to do with your AAA configuration :slight_smile: Boson is nice to practice commands but it’s only a simulator so you can’t really test things.

    If you don’t add anything to your VTY line(s) then it will use the default AAA group. If you want to use RADIUS / TACACS+ authentication for some things but not for your VTY lines, then you can also create a second group and use that for the VTY lines. Something like this:

    ... Continue reading in our forum

  5. Hi Elia,

    It depends on the EAP type that you use. In this lesson, you can see this checkbox on the RADIUS server:


    The RADIUS server generated a certificate and when the client connects, it checks the server certificate to see if it’s talking to the correct server. The client then sends a username/password to authenticate the client.

    EAP-TLS allows you to use client certificates which is very safe, but does take time to setup (you need a client c

    ... Continue reading in our forum

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