From: Noel.MacFadden@swisscom.com
Date: Thu Sep 05 2002 - 08:27:19 GMT-3
Hi:
Try checking the following
(1) Master clock set to a better stratum on server that
that of the client
(2) ntp broadcast on interface
(3) use debug ntp packet to ensure that ntp packets
are being sent and received.
The config below is working, but I'm not saying its perfect, for e.g.
I cant figure out where the address 127.127.7.1 is coming from ????
I have set the source to the loopback address 133.8.1.1
--------- Master Router R1: ----------------
int s0
...
ntp broadcast
ntp authentication-key 1 md5 104D000A0618 7
ntp authenticate
ntp source Loopback1
ntp access-group serve 3
ntp master 2
!
interface Loopback1
ip address 133.8.1.1 255.255.255.0
r1#sh clock
13:19:50.983 UTC Thu Sep 5 2002
r1#sh ntp assoc
address ref clock st when poll reach delay offset disp
*~127.127.7.1 .LOCL. 1 27 64 377 0.0 0.00 0.0
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
r1#sh ntp assoc det
127.127.7.1 configured, our_master, sane, valid, stratum 1
ref ID .LOCL., time C121D860.3B90E118 (13:19:28.232 UTC Thu Sep 5 2002)
our mode active, peer mode passive, our poll intvl 64, peer poll intvl 64
root delay 0.00 msec, root disp 0.00, reach 377, sync dist 0.015
delay 0.00 msec, offset 0.0000 msec, dispersion 0.02
precision 2**18, version 3
org time C121D860.3B90E118 (13:19:28.232 UTC Thu Sep 5 2002)
rcv time C121D860.3B90E118 (13:19:28.232 UTC Thu Sep 5 2002)
xmt time C121D860.3B8D24CB (13:19:28.232 UTC Thu Sep 5 2002)
filtdelay = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
filtoffset = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
filterror = 0.02 0.99 1.97 2.94 3.92 4.90 5.87 6.85
Reference clock status: Running normally
Timecode:
----- Client Router R2
ntp authentication-key 1 md5 045802150C2E 7
ntp authenticate
ntp trusted-key 1
ntp clock-period 17179766
ntp server 133.8.1.1 key 1 source Loopback1
end
r2#sh clock
13:21:15.268 UTC Thu Sep 5 2002
r2#sh ntp assoc
address ref clock st when poll reach delay offset disp
*~133.8.1.1 127.127.7.1 2 10 64 177 35.5 0.06 125.2
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
r2#sh ntp assoc det
133.8.1.1 configured, authenticated, our_master, sane, valid, stratum 2
ref ID 127.127.7.1, time C121D8A0.3B89F899 (13:20:32.232 UTC Thu Sep 5 2002)
our mode client, peer mode server, our poll intvl 64, peer poll intvl 64
root delay 0.00 msec, root disp 0.03, reach 177, sync dist 142.944
delay 35.51 msec, offset 0.0596 msec, dispersion 125.17
precision 2**19, version 3
org time C121D8C7.5434B78C (13:21:11.328 UTC Thu Sep 5 2002)
rcv time C121D8C7.58BC52B3 (13:21:11.346 UTC Thu Sep 5 2002)
xmt time C121D8C7.4F6B1903 (13:21:11.310 UTC Thu Sep 5 2002)
filtdelay = 35.51 35.72 35.68 35.77 37.92 35.80 35.68 0.00
filtoffset = 0.06 0.01 -0.20 -0.15 -1.34 0.10 0.12 0.00
filterror = 0.02 0.99 1.97 2.94 3.92 4.90 5.87 16000.0
-----Original Message-----
From: VANGADASALAM,SURENDRAN (Non-HP-Singapore,ex4)
[mailto:surendran_vangadasalam@non.hp.com]
Sent: Donnerstag, 5. September 2002 12:07
To: 'Jeff Szeto'; 'ccielab@groupstudy.com'
Subject: RE: NTP not sync
Have you checked the timezone
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Jeff Szeto
Sent: 05 September 2002 17:12
To: ccielab@groupstudy.com
Subject: NTP not sync
Hi Group,
I want the R1 to synchronize with R2's clock, but it does not sync after a
hour.
Please give some advise.
Thank you.
Jeff
R1's config:
int e0
ip add 192.168.0.2 255.255.255.0
ntp authentication-key 1 md5 13061E010803 7
ntp authenticate
ntp trusted-key 1
ntp peer 192.168.0.8 key 1
r1#sh clock
*02:52:17.079 UTC Mon Mar 1 1993
r1#sh ntp ass
address ref clock st when poll reach delay offset
disp
~192.168.0.8 0.0.0.0 16 16 64 0 0.0 0.00
16000.
* master (synced), # master (unsynced), + selected, - candidate, ~
configured
R2's config:
int e0
ip add 192.168.0.8 255.255.255.0
ntp authentication-key 1 md5 104D000A0618 7
ntp authenticate
ntp trusted-key 1
ntp peer 192.168.0.2 key 1 prefer
r2#sh clock
.17:08:26.807 H Thu Sep 5 2002
r2#sh ntp ass
address ref clock st when poll reach delay offset
disp
~192.168.0.2 0.0.0.0 16 - 64 0 0.0 0.00
16000.
* master (synced), # master (unsynced), + selected, - candidate, ~
configured
r2#
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