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Conference tuxedo::dce-products

Title:DCE Product Information
Notice:Kit Info - See 2.*-4.*
Moderator:TUXEDO::MAZZAFERRO
Created:Fri Jun 26 1992
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2269
Total number of notes:10003

2178.0. "DCE on VMS and multiple interfaces." by CSC32::R_WILLIAMS () Tue Mar 04 1997 19:23

    Hi,
    
    I saw notes 1445, 2032.3, 2032.6 and others that referred to multiple
    interface problems with DCE.  These notes seemed to be related to Dunix
    environments.  Can I assume from the discussions that as long as the
    multiple interfaces are configured (regardles of IP stack), that we should 
    have no problem with DCE on VMS systems with multiple interfaces?
    
    Anybody successfully doing this on VMS platforms?
    
    Thanks for your inputs.
    
    -Rick
T.RTitleUserPersonal
Name		DateLines
2178.1More on this customer problem.CSC32::R_WILLIAMSTue Mar 04 1997 19:3211
    Basically, the customer has DCE 1.3B on a VMS system.
    
    His host has 2 interfaces.  This host doesn't seem to allow CDS/login
    etc on both both interfaces.  When the customer tries to login on 1 
    interface, it times out and then goes to the second.
    
    Any thoughts on this?
    
    Thanks,
    
    -Rick
2178.2CSC32::R_WILLIAMSTue Mar 04 1997 20:0613
    I'm wondering if section "4.3.7 Configuring Multiple LAN Cells" is the
    answer to this customers question.  How do I see if this customer has
    configured DCE to support multiple LAN cells.  Can I assume that
    multiple LAN in this case refers to different network segments and that
    a customer can have multiple LAN's configured on the same system based
    on his ethernet or FDDI cards?
    
    Sorry for the confusion, but I could appreciate some enlightenment on
    the VMS platform.
    
    Thanks,
    
    -Rick
2178.3Possible !VIRGIN::BILLBILL is my lastname !!!Wed Mar 05 1997 03:3031
Rick,


It's possible to run a DCE/VMS system with multiple interface, but
there are some odds:

login: The security server advertises his existence on all possible
       interfaces. A client gets randomly a binding to the security
       server. This means he may get a binding in the other subnet.
       If there isn't a router between the two subnets the client
       can't connect to this binding. After a while (depending on udp 
       or tcp) the client will try the next binding.

	So either you need a router between the two subnet or you
        enable the "ipforwarding" parameter.

       If the clients are only on one side of the subnet, then it would
       be cool to limit the server to the proper subnet. This is 
       possible on DUNIX with a patch and a environment variable
	(RPC_UNSUPPORTED_NETIFS).


DCE DTS/DecNET DTSS
	If you have running a DCE/DTS time server which should get the
	time from DECnet DTSS you have to make sure that the logical
	DTSS$ETHERNET_DEVICE is set to the right interface !


Hope this helps and is correct, any other comments appreciated...

Marco
2178.4CSC32::R_WILLIAMSWed Mar 05 1997 04:445
    Thanks Marco.  I thought that enabling IP forwarding on the IP stack
    should be all that would be needed.  I'll have the customer work from
    this aspect.  Any other comments/gotchas are welcomed.
    
    -Rick
2178.5RPC_UNSUPPORTED_NETIFS not implemented on OpenVMSSTAR::MORRISONWho is John Galt?Wed Mar 05 1997 16:386
The current version of DCE for OpenVMS (V1.4) does not support the
RPC_UNSUPPORTED_NETIFS logical.  However, we are looking into adding that
support in our next version, since it's not a difficult change.  Marco's
other comments are (as usual) quite accurate.

						Wayne