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The SCO IPX/SPX installation mechanism prevents many potential installation errors. However, it is important to have a clear picture of the network topology prior to software installation. This is particularly important when routers and multiple subnetworks are being configured.
Incorrect specification of internal or subnet network numbers cause host addressing problems. All server network numbers and subnet numbers have to be manually checked for uniqueness. This should be done prior to configuration or installation. It is advisable to establish a numbering convention to distinguish internal (that is, logical) networks from physical subnetworks. This facilitates the interpretation of the outputs from certain utilities, for example, drouter.