IOS doesn't accept dot1x commands on 4510r+e

Question

I am running a 4510 with a SUP-8. I am trying to implement 802.1x for NAC, but the switch refuses the interface-level command. Below is the entire config I am trying to implement and the results. Any ideas as to why it rejects the interface level commands?
! dot1x
aaa authentication dot1x   default group radius
aaa authorization network   default group radius
aaa authorization auth-proxy   default group radius
aaa accounting dot1x default   start-stop group radius
aaa accounting network   default start-stop group radius
aaa accounting system default   start-stop group radius
aaa accounting update   periodic 15
aaa accounting update newinfo
radius-server attribute 6   on-for-login-auth
radius-server attribute 8   include-in-access-req
radius-server attribute 25   access-request include
radius-server dead-criteria   time 30 tries 3
radius server ISE
address ipv4 10.40.0.2 auth-port 1812   acct-port 1813
address ipv4 10.40.0.4 auth-port 1812   acct-port 1813
key 0 xxxxxxxxxxxx
radius-server vsa send   accounting
radius-server vsa send   authentication
ip radius source-interface   Vlan500
ip arp inspection vlan 15
ip dhcp snooping vlan 15
no ip dhcp snooping information option
ip dhcp snooping
ip device tracking
dot1x system-auth-control
dot1x critical eapol
interface g1/5
switchport access vlan 15
switchport voice vlan 65
logging event link-status
service-policy input QoS-Input-Policy
service-policy output   QoS-Host-Port-Output-Policy
authentication event fail action next-method
authentication event server dead action   authorize vlan 1500
authentication event server alive action   reinitialize
authentication host-mode multi-auth
authentication open
authentication order mab dot1x
authentication priority dot1x mab
authentication port-control auto
authentication timer reauthenticate server
authentication periodic
authentication violation restrict
mab
dot1x pae authenticator
dot1x timeout tx-period 10
LAB-IDF(config)#int g1/5
LAB-IDF(config-if)# switchport access vlan 15
LAB-IDF(config-if)# switchport voice vlan 65
LAB-IDF(config-if)# logging event link-status
LAB-IDF(config-if)# service-policy input QoS-Input-Policy
% policy map QoS-Input-Policy not configured
LAB-IDF(config-if)# service-policy output QoS-Host-Port-Output-Policy
% policy map QoS-Host-Port-Output-Policy not configured
LAB-IDF(config-if)#
LAB-IDF(config-if)# authentication event fail action next-method
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)#$tion event server dead action authorize vlan 1500       
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication event server alive action reinitialize
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication host-mode multi-auth
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication open
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication order mab dot1x
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication priority dot1x mab
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication port-control auto
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication timer reauthenticate server
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication periodic
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# authentication violation restrict
                       ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# mab
                      ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# dot1x pae authenticator
                        ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)# dot1x timeout tx-period 10
                        ^
% Invalid input detected at '^' marker.
LAB-IDF(config-if)#!

Answer 1

Edit: I do know that the 'authentication' command shows as if it's not available under interface mode. I was wondering if there was maybe something else I have to turn on first before it's avaliable. Also, in the configuration guide, it says there shoudl be a 'dot1x' command in interface mode, but it's not there either.