SLP can function adequately without any scope configuration. In the Oracle Solaris operating environment, the default scope for SLP is default. If no scopes are configured, default is the scope of all SLP messages.
You can configure scopes in any of the following circumstances.
The organizations you support want to restrict service advertisement access to their own members.
The physical layout of the organization you support suggests that services in a certain area be accessed by particular users.
The service advertisements that are appropriate for specific users to see must be partitioned.
An example of the first circumstance was cited in Configuring DA Discovery for Dial-up Networks. An example of the second is a situation in which an organization is spread between two buildings, and you want users in a building to access local services in that building. You can configure users in Building 1 with the B1 scope, while you configure users in Building 2 with the B2 scope.