Mackie Configuring a new host in an existing Xprint V7.0 network, Configuring the other hosts

Configuring Xprint V7.0 Administering hosts (users only)

●Add the user xprintadm to the Xprint V7.0 configuration: xpadd -usrxprintadm

●Modify the Xprint V7.0 configuration such that xprintadm becomes the new Xprint V7.0 administrator:

xpmod -sys -ad xprintadm

Once you have performed these steps, you, as the Xprint V7.0 administrator, can configure printers and other Xprint V7.0 objects on the host.

Configuring the other hosts

Configure all the other hosts as described in the following section.

6.2.3Configuring a new host in an existing Xprint V7.0 network

Configuration hints

Xprint V7.0 allows interoperability between different administrative domains, which need to be connected by gateways. All the hosts in an administrative domain share the same database contents. Each definition of an Xprint V7.0 object or change of state involves a database update, which must be reflected on each host in the domain. This database propagation mechanism requires a reasonably fast network, which will allow connections to be opened quickly and rapid data transfer.

The required data transfer rate between hosts is in the order of megabits per second. A typical example of such a network is Ethernet. Different domains can be connected by slower networks (possibly wide area networks) as there is generally less traffic between domains than within a domain.

As a guideline, experience has shown that there is a practical limit of 50 potential masters/slave hosts in a single domain. If there are too many potential master/slave hosts, it is difficult to keep all the databases updated. If more than 50 hosts are needed then parasite hosts can be defined, or the domain can be divided into a number of smaller domains.

Parasite hosts import the database from their supporting host (potential master or slave) by means of a file sharing utility (e.g. NFS) which needs to be set up by the administrator. Parasite hosts depend on the supporting hosts, as Xprint V7.0 cannot run on the parasite if it hasn’t been started on the supporting host.

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