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There are a lot of moving parts required for SDA (Software Defined Access) to function and I am not yet convinced that the benefits outweigh the cost and complexity of the architecture for small – medium sized networks. Apply Login Method Lists to Terminal Linesįor our Authentication method lists that we previously configured, we will need to add it to our Terminal Lines for it to work.Cisco’s latest marketing push around intent based networking looks very interesting but I am curious to see what the uptake is like over the next 12 to 18 months. Now we just need to apply our login method to work when someone connects. Method List SummaryĪfter all our configuration above, our Method Lists look like this: aaa authentication login group localĪaa authorization exec default group localĪaa accounting commands 0 default start-stop group Note that Level 15 includes config terminal commands also. What we have said here is that we want to log all level 0, 1 and 15 commands to the TACACS server group we configured. aaa accounting commands 0 default start-stop group Īaa accounting commands 1 default start-stop group Īaa accounting commands 15 default start-stop group Accounting – Log all CommandsĪs part of Accounting, we can make sure to log all commands entered on the device. We have added local account fallback too. aaa authorization exec default group local We can also add a method list to ensure that users are authorized to run commands. Authorization – Commands (with Local Fallback!) Since it is better practise, we can use this instead of the previous Authentication Method List above. You will see that we had to make a new group name (Group Name 2) which contained login options for our original server and local fallback. So if all the ISE server options are exhausted, you will be prompted to log in with a pre-configured local account. The above command is valid, but it means that if for any reason all of your ISE servers are down, you wont be able to log in to your device!įor this reason it is best practise to add local account fallback. If we want to configure authentication to use our ISE Server Group, we can use the below method list: aaa authentication login default group Authentication – Check Login with ISE (with Local Fallback!) We can configure just any combination of Authentication, Authorisation or Accounting. These conditions are called Method Lists. Now we want to define when we want to contact the ISE server and for what scenario. You can see that instead of the IP address, we referenced the name of the server we mentioned in the previous step.Īs always, remember to give the group a logical name! 4. The benefit of adding them into a group is so that if one of them is unreachable for whatever reason, the next server will be tried until a connection is established.
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Next, we need to add each of the individual ISE servers into a group.
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You can get the shared key from Cisco ISE under the Device Properties. We will need to add the servers that we are using for AAA (in our case, Cisco ISE) to our device in order for it to communicate with it. This then allows us to use the rest of the AAA commands for us to implement on the device. Using a single, small command in global config mode, we can enable AAA on the device. Apply Login Method Lists to Terminal Interfaces.Authorization – Commands (with Local Fallback!).Authentication – Check Login with ISE (with Local Fallback!).This post will go through the configuration of TACACS on a Cisco device to authenticate with an AAA server (Cisco ISE for example) and what the configuration means. If you are unfamiliar with the AAA process, you can click here for a brief explanation on what that is. TACACS is a protocol that is used for the AAA process.