Re: DTCPARMS Question

[Miguel Diaz]

Richard,

My previous post was a bit unclear and
could be taken incorrectly.  As some sort of pennance, I'll try and
be significantly more descriptive this time.  The TCPRUN searches
the DTCPARMS files in the following order:
<userid> DTCPARMS
<nodeid> DTCPARMS
SYSTEM DTCPARMS
IBM DTCPARMS

As soon as it finds an entry with the
:nick. tag of the server's userid (:nick.FTPSERVE for example), it will
use whatever tag/value pairs are specified on that entry.  The defaults
in IBM DTCPARMS are defined on the server class definitions (entries where
:type.class is specified).  The server will use the tag/values specified
on it's :nick. entry to override the tag/values specified on the corresponding
:class entry.  However, only one :nick entry and one :class entry
are used.

So, if you have the following in FTPSERVE
DTCPARMS

:nick.FTPSERVE      
  :type.server 
         
              :class.ftp
         
              :esm_enable.yes

And the following in SYSTEM DTCPARMS

:nick.FTPSERVE      
  :type.server 
         
              :class.ftp
         
              :anonymous.yes
         
              :ownerID.TCPMNT2
         
              
Along with the default class definition
from IBM DTCPARMS:

:nick.ftp        
   :type.class            

           
                 :name.FTP
daemon        
           
                 
:command.SRVRFTP        
           
                 
:runtime.PASCAL         
           
                 
:diskwarn.YES              
   
           
                 
:anonymous.NO              
  
           
                 
:ESM_Enable.NO          
           
                 
:ESM_Validate.RPIVAL    
           
                 
:ESM_Racroute.RPIUCMS 

The net effect is that ESM is enabled
 (from the FTPSERVE DTCPARMS), anonymous access is NOT enabled (the
entry in SYSTEM DTCPARMS has no effect), and the owner defaults to TCPMAINT
(the default for all servers).

This behavior is documented in the "General
Server Configuration" chapter of z/VM TCP/IP Planning and Customization
(chapter 5 in the 5.2.0 books, it may differ for previously releases)

Regards,
Miguel Diaz
z/VM TCP/IP Development 

Miguel Diaz/Endicott/IBM wrote on 04/18/2006 03:47:07
PM:

> Richard,
> 
> The entire entry is not replaced.  The server will use whatever
tags
> you define in the SYSTEM DTCPARMS to override the individual tag in

> IBM DTCPARMS, and use the defaults from IBM DTCPARMS for any tag not
> specified in SYSTEM DTCPARMS.
> 
> Regards,
> Miguel Diaz
> z/VM TCP/IP Development 
> 
> The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU> wrote
on 
> 04/18/2006 03:03:58 PM:
> 
> > When attempting to override one tag in  the DTCPARMS entry
for FTP, 
> > is it necessary to copy the entire definition for FTP from IBM

> > DTCPARMS to SYSTEM DTCPARMS and then change the one value, or
are 
> > the tags included in SYSTEM DTCPARMS applied individually to
the 
> > defaults obtained from IBM DTCPARMS? In other words, do the 
> > individual tags in SYSTEM override those in IBM or does the entire

> > entry from IBM get replaced by the one from SYSTEM?
> > 
> > Regards,
> > Richard Schuh