Updating ios on cisco 1900 switch

I guess it's just an option for having more granular authentication.Or, perhaps a scenario where you have many people who can log into your routers, but only a select few who can configure them?

This example shows the configuration of TACACS servers, but the concept applies to RADIUS servers as well.This last step has actually been done for us already by enabling AAA in step one. aaa authentication login default group tacacs local aaa authorization exec default group tacacs local !However, if we were to create a custom authentication method list for these lines, we would use the command below, substituting the method list name for the word These commands will not appear in the running configuration if the default method list is specified. And remember, if the TACACS servers become unreachable, we can log into the router using the local user account we created in step zero. username Backup Admin privilege 15 secret 5

This example shows the configuration of TACACS servers, but the concept applies to RADIUS servers as well.

This last step has actually been done for us already by enabling AAA in step one. aaa authentication login default group tacacs local aaa authorization exec default group tacacs local !

However, if we were to create a custom authentication method list for these lines, we would use the command below, substituting the method list name for the word These commands will not appear in the running configuration if the default method list is specified. And remember, if the TACACS servers become unreachable, we can log into the router using the local user account we created in step zero. username Backup Admin privilege 15 secret 5 $1$q LGb$VQ6Bdq CEpz GZq Pe C779Uh1 !

While easily implemented, this approach is far from ideal for a production network.

For much more robust and easily managed authentication schemes, IOS supports the Authentication, Authorization, and Accounting (AAA) model, using the RADIUS or TACACS protocols to centralize these functions on dedicated AAA servers.

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This example shows the configuration of TACACS servers, but the concept applies to RADIUS servers as well.This last step has actually been done for us already by enabling AAA in step one. aaa authentication login default group tacacs local aaa authorization exec default group tacacs local !However, if we were to create a custom authentication method list for these lines, we would use the command below, substituting the method list name for the word These commands will not appear in the running configuration if the default method list is specified. And remember, if the TACACS servers become unreachable, we can log into the router using the local user account we created in step zero. username Backup Admin privilege 15 secret 5 $1$q LGb$VQ6Bdq CEpz GZq Pe C779Uh1 !While easily implemented, this approach is far from ideal for a production network.For much more robust and easily managed authentication schemes, IOS supports the Authentication, Authorization, and Accounting (AAA) model, using the RADIUS or TACACS protocols to centralize these functions on dedicated AAA servers.

$q LGb$VQ6Bdq CEpz GZq Pe C779Uh1 !While easily implemented, this approach is far from ideal for a production network.For much more robust and easily managed authentication schemes, IOS supports the Authentication, Authorization, and Accounting (AAA) model, using the RADIUS or TACACS protocols to centralize these functions on dedicated AAA servers.

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