I have TACACS configured on all of the Cat 6509 sups. However, I haven't been able to configure a backdoor username and password. I've searched CCO website and I haven't been able to find anything. I ran into an issue earlier this morning where we lost TACACS temporarily and I needed to get into the sup of a 6509 and couldn't. Can a backdoor be applied to the Sup? If so, where would I find the command structure.