From: Atlanta CCIE (atlantaccie@gmail.com)
Date: Thu Oct 30 2008 - 11:50:28 ARST
I ran into this one time but problem was that R5 did not have the route to
R6's loopback. Can you post the sh ip route of the two routers and make sure
they can ping the loopbacks? Also please post the complete NTP configs from
both routers.
On Thu, Oct 30, 2008 at 8:44 AM, Huan Pham <pnhuan@yahoo.com> wrote:
> Hi,
>
> This should be a very simple question, but NTP always bugs me.
>
> Scenario is simple. R6 is the NTP master, and R5 is client. It already
> takes
> ages, but I could not get R5 clock synchronized (status = unsynchronized,
> insane). Yet, R5 picks up the correct clock from R6, even after I reload
> the
> router.
>
> You may ask to manually set clock of the two routers close to each other,
> so the synchronization will speed up. I've done that and it does not help.
> Anyway, client already picks up the clock (from the Server), so no need to
> manually set it. The question is what can I do to get R5 to show status =
> synchronized, and "sane".
>
> Any idea pls?
>
>
> Rack1R6#sh run | in ntp
> ntp source Loopback0
> ntp master 5
>
>
> Rack1R5#sh run | in ntp
> ntp server 150.1.6.6
>
> Rack1R5#sh ntp associations detail
> 150.1.6.6 configured, insane, invalid, stratum 5
> ref ID 127.127.7.1, time CCB4C034.A6EF985D (23:22:28.652 UTC Thu Oct 30
> 2008)
> our mode client, peer mode server, our poll intvl 1024, peer poll intvl
> 1024
> root delay 0.00 msec, root disp 8354.68, reach 377, sync dist 8378.571
> delay 47.67 msec, offset 154290.0900 msec, dispersion 0.06
> precision 2**24, version 3
> org time CCB4C049.1D3A1525 (23:22:49.114 UTC Thu Oct 30 2008)
> rcv time CCB4BFAE.D9112EC7 (23:20:14.847 UTC Thu Oct 30 2008)
> xmt time CCB4BFAE.CCD8B539 (23:20:14.800 UTC Thu Oct 30 2008)
> filtdelay = 47.67 47.67 47.96 48.10 47.87 47.85 47.84
> 47.93
> filtoffset = 154290. 154290. 154290. 154290. 154290. 154290. 154290.
> 154290.
> filterror = 0.02 0.03 0.05 0.06 0.08 0.09 0.11
> 0.12
>
> Rack1R5#sh ntp status
> Clock is unsynchronized, stratum 16, no reference clock
> nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
> reference time is 00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900)
> clock offset is 0.0000 msec, root delay is 0.00 msec
> root dispersion is 0.00 msec, peer dispersion is 0.00 msec
>
>
> (R5 after reload)
>
> Rack1R5#sh clock
> *23:25:13.371 UTC Thu Oct 30 2008
>
> This is the same clock from R6.
>
>
>
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