[comp.os.vms] DECnet redundant routes

ccaw001@UTADNX.CC.UTEXAS.EDU ("Rick Watson") (12/24/87)

To all DECnet gurus:

Is the following topology legal?



                   A::                       B::
                  +----+                    +----+
                  |    |--dmr----------dmr--|    |
                  +----+                    +----+
                     |                         |      
              ---------ether------------------------

The reason for this topology is that the ethernet is more than 1
physical segment, connected via level-2 bridges running over a long
phone circuit.  The dmr circuit would be used as a backup in case the 
ether-ether bridge failed.  I know that redundant circuits are normally
supported by DECnet, but I am not sure about the above case.  The reason
for the question is that after configuring the above topology, we started
seeing high levels of kernel/interrupt activity which was (apparently)
stopped by turning off the dmr circuit.  An additional note: A:: and B::
are area routers in different areas.

Rick Watson
Computation Center
University of Texas at Austin
watson@utadnx.cc.utexas.edu
watson@utadnx.bitnet
utspan::utadnx::watson (SPAN)


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