TCPIP

TCP/IP

TCP/IP is familiar to all system managers. In OpenVMS its management has been automated through the use of a script. It can also be managed with a command-line interface of about 100 commands. Multinet and TCPW are also licensed TCP/IP stacks for OpenVMS.

The Compaq/HP-supported software is called TCP/IP version 5.3 at this writing. It is configured with a script called TCPIP$CONFIG and managed with the TCPIP command. When the system is booted, SYSTARTUP_VMS should be modified to include a line such as the following:

     $ @SYS$STARTUP:TCPIP$STARTUP 

The configuration script is shown in part, as follows. Once an option is selected, another menu is displayed. To illustrate the protocols supported by this version of TCP/IP, I selected the server option. This example and the ones following are not intended to be self-explanatory, and describing the concepts are beyond the scope of this book. These examples merely indicate the kind of interface the manager can expect.

     $ @SYS$MANAGER:TCPIP$CONFIG     TCP/IP Network Configuration Procedure     This procedure helps you define the parameters required     to run Compaq TCP/IP Services for OpenVMS on this system.     Checking TCP/IP Services for OpenVMS configuration database files.     Compaq TCP/IP Services for OpenVMS Configuration Menu     Configuration options:     1 - Core environment     2 - Client components     3 - Server components     4 - Optional components     5 - Shutdown Compaq TCP/IP Services for OpenVMS     6 - Startup Compaq TCP/IP Services for OpenVMS     7 - Run tests     A - Configure options 1 - 4     [E] - Exit configuration procedure     Enter configuration option: 3 

This option results in the following menu. Selecting one of these options causes another menu to display, but that is not shown.

     Compaq TCP/IP Services for OpenVMS Server Components Configuration Menu     Configuration options:         1 - BIND          Disabled Stopped    11 - NTP        Enabled Stopped         2 - BOOTP         Disabled Stopped    12 - PC-NFS     Enabled Stopped         3 - DHCP          Disabled Stopped    13 - POP        Enabled Stopped         4 - FINGER        Enabled Stopped     14 - PORTMAPPER Enabled Stopped         5 - FTP           Enabled Stopped     15 - RLOGIN     Enabled Stopped         6 - LBROKER       Enabled Stopped     16 - RMT        Enabled Stopped         7 - LPR/LPD       Enabled Stopped     17 - SNMP       Enabled Stopped         8 - METRIC        Enabled Stopped     18 - TELNET     Enabled Stopped         9 - NFS           Enabled Stopped     19 - TFTP       Enabled Stopped        10 - LOCKD/STATD   Disabled Stopped    20 - XDM        Disabled Stopped         A - Configure options 1 - 20        [E] - Exit menu      Enter configuration option: 

UNIX Connection (UCX) is an older version of TCP/IP and is frozen at version 4.2. Although it is no longer supported, some managers have not upgraded to the more recent version because they do not need the newer protocols (see the next example).

This version is set up with the script UCX$CONFIG and then managed with the UCX command. The SYSTARTUP_VMS startup script is @SYS$STARTUP:UCX$STARTUP. The disadvantage of this version is that it does not support some important protocols, such as serial line interface protocol (SLIP), which is used in conjunction with dial-up access to Internet service providers (ISPs).

To compare the two packages, the following example is exactly the same function as the previous TCP/IP example:

     $ @ucx$config                     TCP/IP Network Configuration Procedure             This procedure helps you define the parameters required             to run Digital TCP/IP Services for OpenVMS on this system.             Checking TCP/IP Services for OpenVMS configuration database files.             No new database files were created.             Digital TCP/IP Services for OpenVMS Configuration Menu             Configuration options:                      1  -  Core environment                      2  -  Client components                      3  -  Server components                      4  -  Optional components                      5  -  Shutdown Digital TCP/IP Services for OpenVMS                      6  -  Startup Digital TCP/IP Services for OpenVMS                      7  -  Run tests                      A  -  Configure options 1 - 3                     [E] -  Exit configuration procedure     Enter configuration option: 3 

Next, the screen is cleared and replaced by the following:

     Digital TCP/IP Services for OpenVMS SERVER Components Configuration Menu             Configuration options:                      1  -  BIND           Disabled                      2  -  BOOTP          Disabled                      3  -  TFTP           Disabled                      4  -  FTP            Disabled                      5  -  LPR/LPD        Disabled                      6  -  NFS            Disabled                      7  -  PC-NFS         Disabled                      8  -  PORTMAPPER     Disabled                      9  -  TELNET/RLOGIN  Enabled                     10  -  SNMP           Disabled                     11  -  NTP            Disabled                     12  -  METRIC         Disabled                     13  -  POP            Disabled                     14  -  FINGER         Disabled                      A  -  Configure options 1 - 14                     [E] -  Exit menu       Enter configuration option: 

Some servers (e.g., Finger, Network Time, Ping, FTP, SMTP) are included in TCP/IP for OpenVMS (depending on the version). Others, notably the HTTP server, can either be purchased from Compaq/HP or freeware (i.e., user-supported) can be downloaded. The community has also created servers and clients (e.g., Gopher, Finger, FTP, Ping, and SNTP) that predate those supplied by Compaq/HP. Kermit (a terminal emulator and a transfer protocol) will also run under OpenVMS.