HP OpenVMS Systems

TCP/IP UCX routing masks and gateways? (CIDR)

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The Question is:

 
We are running UCX v4.2.  Is there a way to set \
(or dynamically discover) routes with a non-
standard subnet mask?  (ie we are splitting a
Class C in half with a 255.255.255.128 mask and
are only getting to the gateway for the lower half
of the Class C as the gateway to the top half
is not found dynamically and there appears to be
no way to use a MASK parm on the UCX SET ROUTE
command).
 
    Thanks,
 
      Mike
 

The Answer is :

 
  There is currently no support for CIDR (classless inter-domain routing)
  in TCP/IP Services for OpenVMS (UCX) V4.2; route entries are stored
  without an associated network mask.  This capability will be available
  in the next major release of TCP/IP Services for OpenVMS (UCX).
 
  For now, the only way to let a UCX host know about the network mask for
  a given network is to set up an interface (or pseudo-interface) in that
  network.  For example, if a UCX host has an interface SE0, with address
  192.44.55.1 and mask 255.255.255.128, then it will know that the
  192.44.55 network uses a mask of 255.255.255.128.  That information
  will affect routing decisions; network route entries for that network
  will have an implied mask.  Network routes for non-local networks are
  presumed to have an appropriate non-subnetted mask, according to whether
  they are Class A, B, or C.
 

  

     

     
answer written or last revised on ( 19-AUG-1998 )
     
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