Conference turris::digital_unix

9824.0. "ntp_TimeChanged" by DEKVC::MOONSUCHO (MOON-SU CHO @DEK) Thu May 15 1997 03:39

    
    	Hi, We have a problem about ntp(Network Time Protocol) under
    Digital Unix 3.x version environment.
    
    
    [H/W, S/W Environment]
      - Customer name is "Korea Telecom Yong-In Satellite".
      - A/S 2100 * 3 systems, DEC3000 * 2 systems
      - O/S of them  are Digital Unix ver 3.x
      - DBMS: ORACLE
      - They don't use clustering, Just Ethernet Networking
     
                  Simple Network (Ethernet)
    	   +------------+----------+-----------+--------+
           |            |          |           |        |              
         +---+       +----+      +----+     +----+    +----+    
         |   |       |    |      |    |     |    |    |    |   
         +---+       +----+      +----+     +----+    +----+    
        A/S2100       2100        2100     DEC3000     3000   <-- Machine 
         3.2A         3.0         3.2B      3.0        3.0    <-- O/S Version 
         4.0          3.6         3.11      3.0        3.0    <-- F/W Version
         1.35         1.35        1.35                        <-- PAL Code
       dbsdbma     dbsrrm        dbsram   dbstam2a  dbstam1a  <-- Host name
    147.6.191.31  147.6.191.32    .33        .35      .10     <-- IP Address
    
    [Working]
       -Systems are using for Satellite control.
       -They use NTP, one of the A/S2100(A System) is using time server.
       -They had setuped followings;
    
          On "dbsdbma" system(i.e ntp server),
    	      #xntpd  -c /etc/ntp.conf
    	      #vi /etc/ntp.conf
    		+-----------------------------------------------------
                |      .
    		|      .
    		|driftfile /etc/ntp.drift
    		|	.
    		| 	.
    		|driftfile /etc/ntp.drift
    		|server 127.127.1.3  version 2
    		|fudge 127.127.1.3     
     		|stratum 3 refid RSMS
    		|
    
          On other systems(i.e ntp clients),
              #xntpd -c /etc/ntp.conf
              #vi /etc/ntp.conf
                 +-----------------------------------------------------
                 |      .
                 |      .
                 |driftfile /etc/ntp.drift
                 |      .
                 |      .
    		 |driftfile /etc/ntp.drift
                 |server dbsdbma
    		 |
    
    
    [Symptoms] 
       -Problem is that system time is fast about 2~3 minutes per week, system
        time is very important to them. Because the systems manage Satellite 57
        more lines.
       -They had changed time sever to other A/S 2100 system, but the problem
        is same.
    
    Pls Let me know any idea, Thanks