HP OpenVMS Systems Documentation

HP TCP/IP Services for OpenVMS
Release Notes

1. Make Alice a stratum 0 server by enabling the lines in TCPIP$NTP.CONF:

   server 127.127.1.0 prefer fudge 127.127.1.0 stratum 0

2. On both Alice and Bob, add two lines to TCPIP$NTP.CONF:

   keysdir SYS$SPECIFIC:[TCPIP$NTP] crypto pw littlesecret

3. On Bob, add the server line for Alice to Bob's TCPIP$NTP.CONF:

   server alice autokey

4. On Alice, generate the MV parameters. The MV parameter generation process produces a server key and a number of client keys. When choosing the number of client keys, avoid factors of 512 and do not exceed 30. The following command will generate 4 keys (N-1, where N is 5):

   ALICE>ntp_keygen -"T" -"V" 5 -p littlesecret

5. On Bob, generate the client parameters using the server password:

   BOB>ntp_keygen -"H" -p littlesecret

6. Copy any one of the MV client keys tcpip$ntpkey_mvkeyN_alice.timestamp from Alice to Bob's keysdir .
7. On Bob, create a symbolic link to the file. Specify "1" after the -"V" option so it does not complain that the -"V" option requires a value. The "1" will be ignored.

   BOB>ntp_keygen -"V" 1 -l tcpip$ntpkey_mvkeyN_alice.timestamp

8. Start NTP on Alice:

   ALICE>@sys$startup:tcpip$ntp_startup

9. Wait 5 minutes until Alice is synchronized to itself. ntpdc -p should show an asterisk (*) in the leftmost column.
10. Start NTP on Bob:

    BOB>@sys$startup:tcpip$ntp_startup

Bob should eventually synch to Alice (this may take up to 10 minutes). ntpdc -p should show an asterisk (*) in the leftmost column.