Brandon:
enable ntpenable ntp authentication
create ntp key 1 md5 encrypted "0MujpNXF@iCMjh"
configure ntp key 1 trusted
create ntp key 2 md5 encrypted "w\io]/lgnvgArM"
configure ntp key 2 trusted
enable ntp vlan OA
configure ntp server add 192.168.192.170 key 1 initial-burst
configure ntp server add 192.168.192.209 key 2 initial-burst
BD-Spare.5 # sh ntp association
Remote                    Reference ID    St Poll Reach Delay   Offset   Disp
========================= =============== == ==== ===== ======= ======== =======
 !192.168.192.170          INIT            16 1024 0     0.00000 +0.00000 3.99217
 !192.168.192.209          INIT            16 1024 0     0.00000 +0.00000 3.99217
St(ratum)   : Distance from the reference clock
Disp(ersion): Maximum offset error of clock
Flags       : (*) System Peer, (.) Candidate, (#) Short List, (!) Configured
Chassis     : 800128-00-06 09255-00489 Rev 6.0Slot-1      : 800227-00-06 1350G-00208 Rev 6.0 BootROM: 1.0.4.1    IMG: 15.6.3.1
Slot-2      :
Slot-3      :
Slot-4      :
Slot-5      :
Slot-6      :
Slot-7      : 800224-00-05 0939G-00196 Rev 5.0 BootROM: 1.0.4.1    IMG: 15.6.3.1
Slot-8      :
Slot-9      :
Slot-10     :
MSM-A       : 800314-00-03 1349G-01039 Rev 3.0 BootROM: 1.0.4.5    IMG: 15.6.3.1
MSM-B       : 800314-00-03 1349G-01022 Rev 3.0 BootROM: 1.0.4.5    IMG: 15.6.3.1
PSUCTRL-1   : 450105-00-03 09245-00131 Rev 3.0 BootROM: 2.18
PSUCTRL-2   : 450105-00-03 09245-00079 Rev 3.0 BootROM: 2.18
PSU-1       :
PSU-2       :
PSU-3       :
PSU-4       :
PSU-5       : PS 2336 4300-00145 0910K-36941 Rev 10.0
PSU-6       : PS 2336 4300-00145 0910K-36551 Rev 10.0
Image   : ExtremeXOS version 15.6.3.1 v1563b1-patch1-5 by release-manager
          on Sun Aug 16 21:40:56 EDT 2015
BootROM : 1.0.4.5
Diagnostics : 1.20
Thanks