Extreme Networks

EF · 2 weeks ago

Hi Team,

I followed this KB:

How To: How to enable NTP on XMC/XIQ-SE to act as time server for switches | Extreme Portal

But VSP are not able to sync time, reason "Unreachable" server, but no Firewall between them so must be a missconfig on server.

XIQ-SE rel 24.10.

Any idea? Some one did it before?

Best!!

EF

Robert_Haynes · a week ago

Based on what I know of chrony the combination of stratum (how many hops are we away from a reliable 'local' clock source) and the dispersion / epsilon will determine whether or not a server, reachable or not, is declared unreliable/unreachable for synchronization purposes.

If you're that curious as to why, trace the NTP exchanges when you turn on NTP between client and server.

FWIW, while there is a KB article on this XIQ-SE is technically not configured to be a NTP server. If 'dateconfig' is ran at any time customized settings of this nature will be lost. NTP should point to a more reliable clock source than the SE VM hosted on a hypervisor which is by its nature subject to clock drift.

View solution in original post

EF · 2 weeks ago

Upps teh server works:

Something in VSP?

VSP:1#show ntp statistics
************************************************************************************
Command Execution Time: Mon Jan 20 02:13:53 2025 CET
************************************************************************************

NTP Server : 172.XX.XX.XX
------------------------------------------
Stratum : 16
Version : NTPv4
Broadcast : No
Auth Enabled : Disabled
Auth Status : Not-Auth
Sync Status : Discarded-not valid
Reachability : Unreachable
Root Delay : 0.000
Root Disp : 0.000
Delay : 0.000
Dispersion : 15937.500
Offset : 0.000
Precision : -23
Jitter : 0.000
Last Event : Mobilize

Extreme Networks

XIQ-SE as NTP server

XIQ-SE as NTP server