NTP Testing

BB3 (204.12.1.254) が元々の master clock.
SW1 と R5 は ntp server 204.12.1.254 で時刻同期していたが、
BB3 (204.12.1.254 ) への経路が down

R5 が
 ntp master 5
 ntp peer 148.1.57.7 (SW1)
の設定をしていることから、R5 は自分 (127.127.7.1) を masterとする一方で
SW1 (148.1.57.7) も見に行っている（しかし、SW1 は Stratum 6 であるため、
R5 は SW1 を master clock として認めない。

SW1 は R5 側から Peer の設定をしてあるため、R5 と同期しようとする
BB3 が Stratum 4 で残っているが、reachable ではないため、reachable かつ
正常稼働している R5 (148.1.57.5) と同期。



Rack1SW1#sh ntp asso

      address         ref clock     st  when  poll reach  delay  offset    disp
+ 148.1.57.5       204.12.1.254      5    34    64  376   -23.7   11.19    17.2
*~204.12.1.254     127.127.7.1       4   507    64  200     7.8   23.79  16000.
 * master (synced), # master (unsynced), + selected, - candidate, ~ configured
Rack1SW1#sh ntp asso

      address         ref clock     st  when  poll reach  delay  offset    disp
* 148.1.57.5       204.12.1.254      5    62    64  376   -23.7   11.19    17.2
 ~204.12.1.254     127.127.7.1       4   535    64    0     7.8   23.79  16000.
 * master (synced), # master (unsynced), + selected, - candidate, ~ configured

Rack1SW1#sh ntp asso de
148.1.57.5 dynamic, our_master, sane, valid, stratum 5
ref ID 204.12.1.254, time C0295462.3CBD3979 (01:14:10.237 UTC Fri Mar 1 2002)
our mode passive, peer mode active, our poll intvl 64, peer poll intvl 64
root delay 8.13 msec, root disp 25.38, reach 377, sync dist 59.082
delay -23.70 msec, offset 11.1856 msec, dispersion 17.79
precision 2**18, version 3
org time C0295673.37899BC9 (01:22:59.216 UTC Fri Mar 1 2002)
rcv time C0295673.3CDCCCD6 (01:22:59.237 UTC Fri Mar 1 2002)
xmt time C0295651.41FDA9FD (01:22:25.257 UTC Fri Mar 1 2002)
filtdelay =    48.02  -23.70  -15.69   -7.66    3.92   36.35   -7.74   13.06
filtoffset =    3.21   11.19   -0.77  -12.71  -18.61    9.48   -3.94   -4.76
filterror =     0.53    1.51    2.49    3.46    4.44    5.42    6.39    7.37

204.12.1.254 configured, insane, invalid, stratum 4
ref ID 127.127.7.1, time C0295429.A2C06A68 (01:13:13.635 UTC Fri Mar 1 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 0, sync dist 28.458
delay 7.81 msec, offset 23.7948 msec, dispersion 16000.00
precision 2**18, 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 00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900)
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

Rack1SW1#


Rack1R5#sh ntp asso

      address         ref clock     st  when  poll reach  delay  offset    disp
+~127.127.7.1      127.127.7.1       4    51    64  377     0.0    0.00     0.0
+~148.1.57.7       204.12.1.254      5    42    64  376    -7.7   -3.21    12.8
*~204.12.1.254     127.127.7.1       4   473    64  200     8.1   12.07  16000.
 * master (synced), # master (unsynced), + selected, - candidate, ~ configured

Rack1R5#sh ntp asso

      address         ref clock     st  when  poll reach  delay  offset    disp
*~127.127.7.1      127.127.7.1       4    58    64  377     0.0    0.00     0.0
+~148.1.57.7       204.12.1.254      5    49    64  376    -7.7   -3.21    17.2
 ~204.12.1.254     127.127.7.1       4   544    64    0     8.1   12.07  16000.
 * master (synced), # master (unsynced), + selected, - candidate, ~ configured
Rack1R5#

Rack1R5#sh ntp asso de
127.127.7.1 configured, our_master, sane, valid, stratum 4
ref ID 127.127.7.1, time C0295688.3788A45C (01:23:20.216 UTC Fri Mar 1 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 0.153
delay 0.00 msec, offset 0.0000 msec, dispersion 0.02
precision 2**18, version 3
org time C0295688.3788A45C (01:23:20.216 UTC Fri Mar 1 2002)
rcv time C0295688.3788A45C (01:23:20.216 UTC Fri Mar 1 2002)
xmt time C0295688.37888866 (01:23:20.216 UTC Fri Mar 1 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:

148.1.57.7 configured, insane, invalid, stratum 6
ref ID 148.1.57.5, time C0295673.3CDCCCD6 (01:22:59.237 UTC Fri Mar 1 2002)
our mode active, peer mode passive, our poll intvl 128, peer poll intvl 64
root delay 31.83 msec, root disp 54.37, reach 376, sync dist 92.239
delay -7.74 msec, offset -3.2092 msec, dispersion 18.10
precision 2**18, version 3
org time C0295691.4247359D (01:23:29.258 UTC Fri Mar 1 2002)
rcv time C0295691.43D97305 (01:23:29.265 UTC Fri Mar 1 2002)
xmt time C02956B3.378F304B (01:24:03.217 UTC Fri Mar 1 2002)
filtdelay =    26.93    4.20   -7.74    0.27    4.03   -7.95   27.73    3.49
filtoffset =    7.33  -25.12   -3.21    8.74   18.56   12.67  -13.79    9.54
filterror =     0.47    1.45    2.43    3.40    4.38    5.36    6.33    7.31

204.12.1.254 configured, insane, invalid, stratum 4
ref ID 127.127.7.1, time C0295429.A2C06A68 (01:13:13.635 UTC Fri Mar 1 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 0, sync dist 19.257
delay 8.13 msec, offset 12.0710 msec, dispersion 16000.00
precision 2**18, 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 C02956A2.37885700 (01:23:46.216 UTC Fri Mar 1 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 =  16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0

Rack1R5#