OpenVMS v8.2 - PC Client Connectivity Pathworks

[Blane Lauderdale]

After setting up a OpenVMS cluster with four Alpha nodes, (each node has an ip interface and a Decnet interface) I am trying to allow approximatley 1500 PC clients to connect to the cluster (via ip) while load sharing thier connections accross the cluster. Each client is connecting to the cluster via the cluster alias name and ip.
Does anyone know, or have a flow chart of a packet walk through of how this works. All the client are using the same alias and ip and connect to the same server in the cluster. We don't know how the clients are to connect to the other servers of the cluster.

[Andy Bustamante]

A TCPIP cluster alias address is held by one node at a time. You can use DNS to balance the load among multiple systems in a cluster, see http://h71000.www7.hp.com/doc/732final/6526/6526pro_016.html#lbroker_chap for more information. You can list all service addressing for your cluster and use a round robin allocation, with a large user base, this may provide acceptable break up of user load.

You can also use the load broker, also documented in HP TCP/IP Services for OpenVMS Management for better control of allocation. See http://h71000.www7.hp.com/doc/732final/6526/6526pro_017.html


Andy