sntp not syncing

[elparagouayo]

Hello,

I'm currently trying to set date and time syncing using a ntp server.

Weird thing is that it's working on 3 switchs, but not on 2 others, although I'm using the same configuration :

timesync sntp
sntp unicast
sntp server @ip of my ntp server
time daylight-time-rule Western-Europe
time timezone 60

The 3 sntp syncing switchs are

- Procurve switch 2848 (J4904A) running I.10.70 ROM I.08.07

- HP E2620-25 Switch (J9623A) running RA.15.05.0006, ROM RA.15.10.

- Procurve Switch 2626 (J4900B) runing H.10.83 ROM H.08.02

The 2 not syncing are

- Procurve Switch 2626 (J4900B) runing H.10.83 ROM H.08.02

- Procurve Switch 2650 (JA899B) running H.10.74 ROM H.08.02

Any help would be highly appreciated.

Thanks in advance,

Regards,

Elparagouayo

[Arimo]

Hi

It could be related to network issues or policies, it could be related to the SW version. A bit more information would help... like error messages in the log, whether you can ping the NTP server from your switch, whether your switch and server are on the same subnet and if not whether NTP traffic is allowed between the subnets...

[elparagouayo]

Hello Arimo,

Thanks for your answer.

Well unfortunately, no sign of any error messages on any switch. I do configure the sntp as time protocol, and then... nothing ! Just not syncing date and time, that's all.

I can ping NTP server from all switches, and all switchs and ntp server are on the same subnet. In fact the 2 switches not syncing are located in the same building as one which does.

[paulgear]

Do you have a system handy from which you can query the NTP server with 'ntpq -pn'? What does that show?

Do the times on the failing switches stay in the vicinity of 1990, or do they update to something else (wrong)?

[elparagouayo]

Hi paulgear,

Thanks for your answer.

I've tried to use "PresenTence Query" in order to try the query you're indicating me, but the software get stucked on every query I try.

Time on failing switches stays in 1990, nothing is updated (neither date or time).

Regards,

Elparagouayo

[paulgear]

I don't know what "PresenTence Query" is, but if it's doing the same thing as the Linux/Unix "ntpq -pn" command and it's not working, that suggests something is not quite right with your NTP server.  Are there any messages in the logs?

[elparagouayo]

"PresenTence Query" is a tool I found looking for a sntp query software.

No messages in the log, well nothing related to sntp server.

As other switchs are synching with the same NTP server, couldn't we conclude that the server is OK ?

Thanks.

[paulgear]

We could conclude that, but obviously something is still causing the problem. :-)

I would start looking firewall rules on any routers between the switches and the NTP server, or rules on the NTP server itself.  Or perhaps missing routes between those two parts of the network.