Web ViewPoint Central Router (WCR) is a connectivity subsystem that allows a user to connect to any hp NonStop Server with Web ViewPoint installed and under management from a Web ViewPoint Window active on any other NonStop Server.

Following are terms presented with the Central Router:

  • Web ViewPoint Resident: A NonStop Server (whether isolated or part of an Expand network) or Resident with an installed Web ViewPoint (H01ABO/L01ABP & after).
  • Web ViewPoint Neighborhood: An Expand network of NonStop servers with two or more servers or residents with an installed Web ViewPoint (H01ABO/L01ABP & after).
  • Automated Synchronization: The ability of Web ViewPoint installations to maintain a distributed but synchronized library of IP and port addresses for all Web ViewPoint installations on the Expand network.
  • Neighborhood Inquiry: The ability of a Web ViewPoint session to inquire about another Resident of the same Neighborhood (any other resident of the same Expand network).

Note that use of the new terms, “Resident,” and “Neighborhood,” as opposed to “Node” and “Expand,” respectively, are to signify the environment as it applies to Nodes where Web ViewPoint is installed. Features described here apply only to Web ViewPoint Residents and Neighborhoods.

Web ViewPoint Neighborhood

A Web ViewPoint Neighborhood can be considered to be a collection of Web ViewPoint Residents that are on the same network. The following is assumed to be true of a Neighborhood:

  1. There cannot be two Residents belonging to the same System on the same Neighborhood.

                e.g.          SYSA    $A.B       1.1.1.1: 2500       2501
SYSA    $C.D       1.1.1.3: 2500       2501

                The above Neighborhood cannot exist since it has two Residents from the same system.

  1. A given Resident can belong only to one Neighborhood.

             e.g.          Neighborhood 1:
SYSA     $A.B       1.1.1.1: 2500       2501
SYSB     $A.B       1.1.1.2: 2500       2501

             Neighborhood 2:
                            SYSA    $A.B       1.1.1.1: 2500       2501
SYSC    $A.B       1.1.1.3: 2500       2501
 

Neighborhoods 1 and 2 both have the same Resident of System A which is not permitted.

Each Resident installed will include a synchronization program called Sync that will be used by the Resident to join/leave a Neighborhood as well as synchronize the entire Neighborhood that the Resident is part of.

Also, during installation, the main Central Router database called IPLIST will be created in the Resident’s home volume. Once the Resident has been initiated into the Neighborhood, this database will store records for all Residents of the neighborhood which include the System name, Volume-Subvolume, IP address and Port number for the Resident.