HP OpenVMS Systems

Controlling DECnet and IP Failover?

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The Question is:

 
I have two alpha machines and each have its own decnet and ip address. At a
given time one machine runs as online machine. The online machine will
always have the same decnet address and ip address irrespective of which is
running as online. For example m
achine a has dec add 2.137 and ip 129.1.130.100 running as online and
machine b has dec add 2.138 and ip 129.1.130.101 running as backup. Both on
the network. Some times there is a need to swap the ip and dec add on a and
b machine
Q. How can I change the decnet address and ip add using a command procedure
and automate it rather than using ucx$config and
decnet_register/net$configure
 
 

The Answer is :

 
  Reconfiguring the DECnet and IP addresses from within a command
  procedure is not an approach the OpenVMS Wizard would recommend.
 
  Consider configuring the two systems into an OpenVMS Cluster, and
  using an alias.  (This allows both systems to be online as necessary,
  with both operating in parallel.)
 
  Configure the two systems with a cluster alias, and start and stop the
  alias as required.  (This works, but having both operational at the
  same time should only be performed while the systems are configured
  in an OpenVMS Cluster.)
 
  Use a distributed name service (DECdns, IP DNS, or similar) to resolve
  the necessary target task addresses within the client tasks -- this
  avoids coding the address(es) into the applications.

  

     

     
answer written or last revised on ( 7-JUN-1999 )
     
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