F5 LTM not synchronising with NTP Server

Login to the cli and type

 

 

ntpq -p

 

 

and examine the output. It'll tell you what the sync status of the ntp daemon is with your ntp servers. Verify the status. I suspect it'll say something like .INIT. which I've seen a couple of units do for unexplained reasons. Just do a quick 'bigstart restart ntpd' and that'll restart ntpd and cause it to try & talk to the upstream ntp servers you've defined.

 

 

An ntpq -p every now & again will (SHould) show you the ntpd getting the delta between the local time and the ntp servers. You'll probably geta quick step into line, and then ntpd should (Within a few monites) eventually get into sync and start to track the clock of one of the servers.

 

 

Checkout the ntpd doc on the internet for various status results of the ntp servers.

 

 

If for some reason you never see any success with your defined servers, doa quick tcpdump on eth0 looking for udp packets on port 123. You should see requests and responses. if not, you have a problem somewhere with your routing or a firewall (Possibly).

 

 

H