From: Ryan (ryan95842@gmail.com)
Date: Sat Feb 24 2007 - 23:06:34 ART
Having some trouble with NTP. Task is to have R3 get time form BB3 and R6
from BB1. No big deal. Then we are to have R1,R2, and SW1 get time from R3
and R4, R5, and SW4 get time from R6. Again, no big deal. Then we are to
have R3 and R6 peer. This all works and every one gets sync'd. No problems
so far.
Then we need to authenticate R3 and R6. Not a problem. Both R3 and R6 get
authenticated.
Now the problem is, the routers pulling time from R3 won't sync anymore. The
ones pulling from R6 do though. (R3 and R6 are both 3640's running 12.4
(10b))
Any thoughts as to why R1, R2, and SW1 will no longer sync?
-Ryan
Rack1R1#
Rack1R1#sh run | inc ntp
ntp server 150.1.3.3
Rack1R1#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**18
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
Rack1R1#
Rack1R2#sh run | inc ntp
ntp server 150.1.3.3
Rack1R2#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**18
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
Rack1R2#
Rack1R3#sh run | inc ntp
ntp authentication-key 1 md5 123A2C243124 7
ntp authenticate
ntp trusted-key 1
ntp peer 150.1.6.6
ntp server 204.12.1.254 key 1
Rack1R3#sh ntp status
Clock is synchronized, stratum 5, reference is 204.12.1.254
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**18
reference time is AF3C323E.0832087B (06:57:02.032 UTC Mon Mar 1 1993)
clock offset is -0.8067 msec, root delay is 6.91 msec
root dispersion is 10480.99 msec, peer dispersion is 10480.15 msec
Rack1R3#
Rack1R4#sh run | inc ntp
ntp clock-period 17179866
ntp server 150.1.6.6
Rack1R4#sh ntp status
Clock is synchronized, stratum 6, reference is 150.1.6.6
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**18
reference time is AF3C3256.F2680AEA (06:57:26.946 UTC Mon Mar 1 1993)
clock offset is -0.3338 msec, root delay is 65.70 msec
root dispersion is 2.85 msec, peer dispersion is 0.24 msec
Rack1R4#
Rack1R5#sh run | inc ntp
ntp clock-period 17179865
ntp server 150.1.6.6
Rack1R5#sh ntp status
Clock is synchronized, stratum 6, reference is 150.1.6.6
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**18
reference time is AF3C3256.9D7AC4AB (06:57:26.615 UTC Mon Mar 1 1993)
clock offset is -0.6593 msec, root delay is 110.63 msec
root dispersion is 5.52 msec, peer dispersion is 2.58 msec
Rack1R5#
Rack1R6#sh run | inc ntp
ntp authentication-key 1 md5 112A3036343D 7
ntp authenticate
ntp trusted-key 1
ntp clock-period 17179875
ntp server 54.1.1.254 key 1
Rack1R6#sh ntp status
Clock is synchronized, stratum 5, reference is 54.1.1.254
nominal freq is 250.0000 Hz, actual freq is 249.9999 Hz, precision is 2**18
reference time is AF3C3269.75801229 (06:57:45.458 UTC Mon Mar 1 1993)
clock offset is 2.2310 msec, root delay is 61.92 msec
root dispersion is 2.35 msec, peer dispersion is 0.09 msec
Rack1R6#
Rack1SW1#
Rack1SW1#sh run | inc ntp
ntp server 150.1.3.3
Rack1SW1#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**18
reference time is AF3C2E9A.8D365A38 (06:41:30.551 UTC Mon Mar 1 1993)
clock offset is 0.4110 msec, root delay is 75.61 msec
root dispersion is 1.30 msec, peer dispersion is 0.11 msec
Rack1SW1#
Rack1SW4#sh run | inc ntp
ntp clock-period 17179935
ntp server 150.1.6.6
Rack1SW4#sh ntp status
Clock is synchronized, stratum 6, reference is 150.1.6.6
nominal freq is 250.0000 Hz, actual freq is 249.9990 Hz, precision is 2**18
reference time is AF3C32A2.90F0B536 (06:58:42.566 UTC Mon Mar 1 1993)
clock offset is 7.2399 msec, root delay is 110.20 msec
root dispersion is 12.77 msec, peer dispersion is 3.17 msec
Rack1SW4#
EOF
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