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Conference pamsrc::objectbroker_development

Title:ObjectBroker Development - BEA Systems' CORBA
Notice:See note 2 for kit locations; note 4 for training
Moderator:RECV::GUMBELd
Created:Thu Dec 27 1990
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2482
Total number of notes:13057

2432.0. "Does OBB know how to handle a dual-homed host?" by MIASYS::DLUGOSZ (My reality check just bounced) Mon Feb 10 1997 20:18

    Are there any known problems with ObjectBroker dealing with a
    dual-homed host OR with RAS?
    
    My PC is connected to a LAN. When I dial into our groups NT server in
    ZKO and run TCP over PPP things get wierd. In addition to the agent
    hanging at the point PPP starts I've noticed that when I restart it
    (the agent that is) netstat shows connections to the agent being to
    saient2.zko.dec.com:62. That is a modem on the NT server! 
    
    Why is ObjectBroker going through the RAS connection? None of what
    I'm trying to do should even be leaving the box at this point.
    
    This is undoubtedly connected to what I was talking about in 2401.
    
    Ron
T.RTitleUserPersonal
Name		DateLines
2432.1dual-homed: need for infoREQUE::ctxobj.zko.dec.com::PatrickObjectBroker EngineeringTue Feb 11 1997 11:3920
Ron,

By dual-homed, you mean that your system has two different IP
addresses, each associated with a different network adapter.
In the case of RAS or PPP, the adapter is the dial-up (modem).

My guess (just guessing since I would need additional information),
is that the order of the TCP/IP bindings has dial-up before your
the LAN network adapter.  Since ObjectBroker does not know that
your system is dual-homed, it calls gethostname() to retrieve the
hostname of the current host; thus it receives the hostname of
the dial-up, not the LAN.

Furthermore, because it does not know that the host is dual-homed,
it only listens for connections on the dial-up network.

In short, ObjectBroker doesn't properly support dual-homed systems.


Paul Patrick
2432.2Strike 1 - My first guess failed.MIASYS::DLUGOSZMy reality check just bouncedTue Feb 11 1997 12:2926
    Paul,
    
    I tryed changing the bindings for ObjectBroker so that it goes to 
    my LAN first and then RAS. This is what I ended up with:
    
    	+ NetBIOS Interface
        - ObjectBroker for Windows NT
          - WINS Client (TCP/IP)
              SMC (WD) ISA Adapter
              Remote Access WAN Wrapper
          - NetBEUI Protocol 
              SMC (WD) ISA Adapter
              Remote Access WAN Wrapper
        + Remote Access Server Service
        + Server
        + Workstation
    
    I just moved the SMC entries up above the RAS entries and rebooted.
    Did't change anything. Should I be changing something else (I not
    to great with the admin side of NT)? Since I made this change 
    netstat now hangs - cute. 
    
    Anybody else out there understand these bindings?
    
    Ron