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Conference 7.286::fddi

Title:FDDI - The Next Generation
Moderator:NETCAD::STEFANI
Created:Thu Apr 27 1989
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2259
Total number of notes:8590

1615.0. "FDDI & ETHERNET and DECNET PHASE IV" by NCMAIL::SCHEID () Wed Mar 08 1995 16:48

    
    If a VAXcluster system has both a FDDI controller and Ethernet
    controller... DECNET Phase IV requires that both controllers to 
    have the same address... If a Router is introduced into the equation
    in the following way can the controllers have different addresses 
    under DECNET Phase IV or does a Phase V need to be run to accomodat
    this...
    
       ===================DEMFA======== DEMFA
      |    FDDI             |             |
    ROUTER                DEC 7000      DEC7000
      |_____________________|_____________|
	  ETHERNET
    
    
    If this is not the correct conference for this ...please tell the conf
    to put it in...
    
    
T.RTitleUserPersonal
Name
DateLines
1615.1NETRIX::thomasThe Code WarriorWed Mar 08 1995 16:501
You need Phase V to be able have multiple circuits if the DEC 7000.
1615.2DECnet IV and addressGIDDAY::STANISLAUSWed Mar 08 1995 18:5712
	Assuming the two DEC 7000 systems in .0 are VAX 7000 systems running
DECnet Phase IV,, the configuration is quite legal as long as the router is a
pure router and not a brouter. A brouter bridges and routes. So with the bridge
function, the bridge will see the same AA-00-04-00-xx-yy address on both sides
- the FDDI side and Ethernet side and really get confused when it sees the same
MAC layer address on both sides.

	Once you go to phase V, then the router can be a bridge or a brouter and
that is legal.

ALphonse