I had one where a reload did not sync it. About 8 minutes after the reload it finally synced.
Joe Astorino wrote Sometimes NTP takes FOREVER. Generally, the more unsynced the clocks are , the longer it takes. A reload on the client actually usually seems to fix things right away in my experience. Let us know! On Sat, Oct 24, 2009 at 7:57 PM, Michael Lipsey <[email protected]> wrote: I think it just takes time, about 10 minutes seems to be the number. If you use the command show ntp ass detail you can see the filtoffset and filterror change with each poll (about every minute). There are 8 samples shown. Once things normalize up it appears to work. The idea I guess is to be patient. I dislike NTP today. -mike From: Adrian Brayton [mailto:[email protected]] Sent: Saturday, October 24, 2009 4:08 PM To: Michael Lipsey Cc: [email protected] Subject: Re: [OSL | CCIE_RS] NTP issues Hey Michael, I havent tried this in a lab but what if you... r1 - NTP master 1 r2 - ntp ser "r1" r4 - ntp peer "r2" r5 - ntp peer "r4" and so on... That just might work! On Oct 24, 2009, at 6:28 PM, Michael Lipsey wrote: I know this is going to sound lame, it really should be easier than this. This is exactly the kind of thing that scares me about the lab. Getting hung up on a relatively minor issue for the entire 8 hours (5.5 now). So, I’m doing a simple lab, lab one from V3. It has an NTP configuration in it that is nested. One Router is the next’s server so that the stratum levels match the routers’ number. R1 is the master Ntp master 1 R2 is the next router Ntp server 1.1.1.1 R2#sho ntp ass de 1.1.1.1 configured, our_master, sane, valid, stratum 1 ref ID .LOCL., time CE8D9A76.4CBCB578 (15:23:34.299 UTC Sat Oct 24 2009) our mode client, peer mode server, our poll intvl 64, peer poll intvl 64 root delay 0.00 msec, root disp 0.33, reach 377, sync dist 0.00 delay 0.00 msec, offset 78.6275 msec, dispersion 4.38 precision 2**24, version 4 org time CE8D9A7E.3D78B26B (15:23:42.240 UTC Sat Oct 24 2009) rec time CE8D9A7E.2940579C (15:23:42.161 UTC Sat Oct 24 2009) xmt time CE8D9A7E.28C041FC (15:23:42.159 UTC Sat Oct 24 2009) filtdelay = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 filtoffset = 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.07 filterror = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 minpoll = 6, maxpoll = 10 R2#sho ntp status Clock is synchronized, stratum 2, reference is 1.1.1.1 nominal freq is 250.0000 Hz, actual freq is 249.9996 Hz, precision is 2**24 reference time is CE8D98F7.22AC15AC (15:17:11.135 UTC Sat Oct 24 2009) clock offset is 0.0786 msec, root delay is 0.00 msec root dispersion is 0.09 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000001405 s/s system poll interval is 64, last update was 425 sec ago. Cat1 is the next router Ntp server 2.2.2.2 Cat1(config)#do sho ntp status Clock is synchronized, stratum 3, reference is 2.2.2.2 nominal freq is 119.2092 Hz, actual freq is 119.2099 Hz, precision is 2**18 reference time is CE8D9A7B.CCF8C226 (15:23:39.800 UTC Sat Oct 24 2009) clock offset is -3.8897 msec, root delay is 4.18 msec root dispersion is 109.94 msec, peer dispersion is 15.37 msec R4 is supposed to be the next router however for the life of me I can’t get it to sync. I had trouble with R2 as well but worked through that by removing and reading the NTP config a few times on R1 and R2 – desperation more than troubleshooting. R4(config)#do sho ntp as de 35.35.35.35 configured, insane, invalid, stratum 3 ref ID 2.2.2.2 , time CE8D9ABB.CC07E26C (15:24:43.796 UTC Sat Oct 24 2009) our mode client, peer mode server, our poll intvl 64, peer poll intvl 64 root delay 0.00 msec, root disp 108.85, reach 177, sync dist 70.83 delay 0.00 msec, offset 43176.9866 msec, dispersion 64.77 precision 2**18, version 4 org time CE8D9AE1.ACF0A68B (15:25:21.675 UTC Sat Oct 24 2009) rec time CE8D9AB6.80471CB0 (15:24:38.501 UTC Sat Oct 24 2009) xmt time CE8D9AB6.7EFF0FC9 (15:24:38.496 UTC Sat Oct 24 2009) filtdelay = 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 filtoffset = 43.17 43.17 43.17 43.18 43.18 -79.19 -79.19 0.00 filterror = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16.00 minpoll = 6, maxpoll = 10 I can’t for the life of me figure out why this thing won’t sync to Cat1 (or anything else for that matter). HELP! I have already spent 2 and half hours on this foolishness! Thanks guys. -Mike _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com -- Regards, Joe Astorino CCIE #24347 (R&S) Sr. Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Classroom and Self-Study Cisco CCNA (R&S, Voice & Security), CCNP, CCVP, CCSP and CCIE (R&S, Voice, Security & Service Provider) Certification Training with locations throughout the United States, Europe and Australia. Be sure to check out our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com
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