Unable To Configure HPE 5120 Switch As NTP Server
Customer wants to configure his HPE 5120 switch as an NTP server. The switch is supposed to act as a time server and the connected switches need to be in sync with the this switch.
Switch A is the NTP client 184.108.40.206/24
Switch B is the NTP server 220.127.116.11/24
Reachability is there and the NTP client is configured accordingly.
Switch A is configured as follows:
[hpe]ntp-service unicast-server 18.104.22.168 source interface vlan-interface 1
[hpe]disp ntp status
Clock status: unsynchronized
Clock stratum: 16
When checked the debug session output on the client switch, we see this.
*Apr 26 14:48:59:908 2000 GRNRVRSJU08 NTP/7/debug_NTP_packet_xmt:
packet to 22.214.171.124
*Apr 26 14:49:00:569 2000 GRNRVRSJU08 NTP/7/debug_NTP_packet_rcv:
packet from 126.96.36.199 to 188.8.131.52 on Vlan-interface1
*Apr 26 14:49:01:671 2000 GRNRVRSJU08 NTP/7/debug_NTP_common_info:
Drop peer 184.108.40.206 for its stratum is not less than 15.
The packet is sent from the client to the server and we are receiving a response as well. As per the last message in the debug, the information is dropped as the stratum is not less than 15. A device can act as a server to synchronize other devices only after it is synchronized. If a server has a stratum level higher than or equal to a client, the client will not synchronize to that server.
On Comware v5 switches (Except for higher end switches i.e 75xx, 105xx and 125xx), you do not have the option to change the stratum level or configure the local clock as reference clock on the switch which is supposed to act as a server
Connect a 5130 switch or any higher end switch to act as an NTP server which supports the below commands.
ntp-service refclock-master 2
These commands are used to set the stratum on the switch where 2 is the integer for stratum. Once set, the NTP will be synchronized and you would be able to successfully load the time settings.
Can 5120 be configured as an NTP server.pdf