A networked service that is not SLP-enabled. You can create a proxy registration to register a legacy service with SLP. SLP-based clients can then discover legacy services (see Chapter 21, Incorporating Legacy Services).

In PPP, the communications connection that is negotiated and established between two peers. Solaris PPP 4.0 supports two types of links: dial up and leased line.

A subprotocol of PPP that is used to negotiate the initial set of link parameters between the peers. Part of the function of LCP is to test the link integrity, so many link-related problems manifest themselves as LCP failure.

A proprietary Microsoft authentication protocol for PPP. Solaris PPP 4.0 supports versions 1 and 2 of this protocol in both client and server mode.

A network layer procedure that is used to send datagram packets to multiple machines on an IP network. Packets are not handled by every machine as is the situation with broadcast routing. Multicast requires that routers be configured with special routing protocols.

An authentication protocol that can be used to verify the identity of a caller on a PPP link. PAP uses a cleartext password that is passed over the link, which makes it possible to store the password on one of the endpoint machines. For example, PAP can use the login and password entries in the UNIX passwd database on the machine that receives a call to verify the identity of the caller.

See also challenge-handshake authentication protocol (CHAP).

In PPP, an individual computer at one end of a PPP communications link, which consists of two peers that are connected by communications media. You can configure many types of computing equipment as a peer, such as a workstation, personal computer, router, or mainframe.

A data-link layer protocol that provides a standard method for transferring datagrams over point-to-point media. A PPP configuration consists of two endpoint computers called peers, and the telephone lines or another bidirectional link that the peers use for communication. The hardware and software connection between the two peers is considered the PPP link.

PPP is composed of a number of subprotocols, including PAP, CHAP, LCP, and CCP. Numerous PPP implementations are available. The Solaris 9 operating environment includes Solaris PPP 4.0.

In resource management, a configuration mechanism that is used to partition machine resources.

A proprietary protocol from RedBack Networks that enables hosts to run PPP sessions over an Ethernet link. PPPoE is commonly used with Digital Subscriber Line (DSL) services.

A network-wide administrative identifier for related work.

In resource management, an aspect of the computing system that can be manipulated with the intent to change application behavior.

In resource management, a per-process resource limit that is extended to the task and project entities.

A functionality that enables you to control how applications use available system resources.

A grouping of UAs and SAs that are arranged administratively, topologically, or in some other manner. You can use scopes to modify how you provision access to services across the enterprise.

Information that is distributed by an SA that describes a service. A service advertisement consists of a URL and a collection of attribute/value list pairs that describe a service. All service advertisements have a lifetime. After the lifetime expires, a service advertisement is no longer valid unless reregistered.

The SLP agent that maintains service advertisements for networked services. If no DA is available, the SA answers multicast service requests from UAs. If a DA is available, the SA registers and, optionally, deregisters services with DAs that support its scopes.

A URL that is used to advertise the network location of services. The URL contains the service type, host name, or network address of the service host. The URL might also contain a port number and other information that is required to use the service.

The daemon process that acts as a DA or an SA server in the Solaris implementation of SLP. Service processes on the host register service advertisements with slpd instead of maintaining the advertisements individually. Each process contains an SA client library that communicates with slpd when the daemon is configured as the SA server. The SLP daemon forwards all registrations and deregistrations to DAs. The daemon times out expired service advertisements and maintains a table of the available DAs by performing active and passive DA discovery. Through such mechanisms, DA information is provided to UA clients. UA clients use slpd on a host only for DA information. The SLP daemon is installed on a host as part of the Solaris 9 operating environment. You can optionally configure slpd as a DA.

A form of PPP that runs over synchronous digital lines, which transfer data as a continuous stream of raw bits. The leased-line PPP link uses synchronous PPP.

In resource management, a process collective that represents a set of work over time. Each task is associated with one project.

In PPP, remote peers that a dial-in server grants access to by including the peers' security credentials in the server's PAP or CHAP secrets database.

The SLP agent that acts on behalf of the user application. The agent queries for the identity of corresponding scopes, directory agents, and service advertisements.