From: ELAW@xxxxx
Date: Tue Aug 21 2001 - 17:28:48 GMT-3
I'm trying to configure one of my routers as NTP master and let the other
routers in my pod use it as ntp server.
Problem is, that they seem to sync nicely initially, and then suddenly it
fails.
I haven't caught the actual failure with any debugging.
First I wanted to verify my configs.
Here are my configs (pod uses 172.20.0.0/16):
Master:
access-list 72 permit 172.20.0.0 0.0.255.255
!
ntp authentication-key 1 md5 0130252D7E 7
ntp authenticate
ntp trusted-key 1
ntp clock-period 17208495
ntp source Loopback0
ntp access-group serve 72
ntp master 1
Client:
ntp authentication-key 1 md5 08026F672C 7
ntp authenticate
ntp trusted-key 1
ntp clock-period 17179871
ntp server 172.20.4.1
Master output:
WGxR4#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 249.5901 Hz, actual freq is 249.5841 Hz, precision
is 2**16
reference time is AF3BDD9C.B4D86D8D (00:55:56.706 UTC Mon Mar 1
1993)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.02 msec, peer dispersion is 0.02 msec
WGxR4#sh ntp assoc detail
127.127.7.1 configured, insane, invalid, stratum 0
ref ID .LOCL., time AF3BDD9C.B4D86D8D (00:55:56.706 UTC Mon Mar 1
1993)
our mode active, peer mode passive, our poll intvl 64, peer poll
intvl 64
root delay 0.00 msec, root disp 0.00, reach 0, sync dist 7.828
delay 0.00 msec, offset 0.0000 msec, dispersion 16000.00
precision 2**16, version 3
org time 00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900)
rcv time 00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900)
xmt time AF3C4B1D.62CDA16D (08:43:09.385 UTC Mon Mar 1 1993)
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 = 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0
16000.0
Reference clock status: Running normally
Timecode:
Client output:
WGxR2#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 249.9999 Hz, precision
is 2**19
reference time is AF3BDF84.1BCCB682 (01:04:04.108 UTC Mon Mar 1
1993)
clock offset is 3.9817 msec, root delay is 17.97 msec
root dispersion is 5.87 msec, peer dispersion is 1.88 msec
WGxR2#sh ntp assoc det
172.20.4.1 configured, insane, invalid, stratum 1
ref ID .LOCL., time AF3BDD9C.B4D86D8D (00:55:56.706 UTC Mon Mar 1
1993)
our mode client, peer mode server, our poll intvl 64, peer poll
intvl 64
root delay 0.00 msec, root disp 0.03, reach 0, sync dist 18.707
delay 17.97 msec, offset 3.9817 msec, dispersion 16000.00
precision 2**16, version 3
org time AF3C4B68.8F99112C (08:44:24.560 UTC Mon Mar 1 1993)
rcv time AF3C4B68.1E079DC7 (08:44:24.117 UTC Mon Mar 1 1993)
xmt time AF3C4B68.197260FD (08:44:24.099 UTC Mon Mar 1 1993)
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 = 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0
16000.0
--Erik
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