Ntp-Service Between HPE 7506 and 5800. Also Access Switch 3100

[WPadil]

Hi there. 
Im new here. I had HPE 7506(10.1.10.1) as core, 5800(10.1.31.254) as disti, and many 3100 as access switch.
First i'm config ntp-serv refclock master on 10.1.10.1 and ntp-serv unicast-server 10.1.10.1 on 10.1.31.254. But ntp-service not working when im diaplay ntp-serv stat in disti. Im also tried configured ntp-service broadcast server and client on vlan 2. Still nothing happen. Im planning to set ntp-service to accesss switch as peer after this problem solve.
Please help me masta...
__________________________________________________________________________________ 
[7506]ntp-service refclock-master 2
...
[5800]ntp-service unicast-server 10.1.10.1
...
[7506]dis ntp-service status
Clock status: synchronized
Clock stratum: 2
System peer: LOCAL(0)
Local mode: client
Reference clock ID: 127.127.1.0
Leap indicator: 00
Clock jitter: 0.000000 s
Stability: 0.000 pps
Clock precision: 2^-18
Root delay: 0.00000 ms
Root dispersion: 11.74927 ms
Reference time: de353371.c0b20d19 Mon, Feb 19 2018 11:28:49.752
[7506]
[5800]dis ntp status
Clock status: unsynchronized
Clock stratum: 16
Reference clock ID: none
Nominal frequency: 100.0000 Hz
Actual frequency: 100.0000 Hz
Clock precision: 2^18
Clock offset: 0.0000 ms
Root delay: 0.00 ms
Root dispersion: 0.00 ms
Peer dispersion: 0.00 ms
Reference time: 00:00:00.000 UTC Jan 1 1900(00000000.00000000)
[5800]