This memo describes the Network Time Protocol (NTP) designed to distribute time information in a large, diverse internet system operating at speeds from mundane to lightwave. It uses a returnabletime architecture in which a distributed subnet of time servers operating in a self

to lightwave. It uses a returnable-time design in which a distributed subnet of time servers operating in a selforganizing, hierarchical-master-slave configuration synchronizes local clocks within the subnet and to national time standards via wire or radio. The servers can also redistribute reference time via

This RFC specifies a protocol for the ARPA-Internet community. If subnetting is implemented it is strongly recommended that these procedures be followed. Distribution of this memo is unlimited. Overview This memo discusses the utility of "subnets " of Internet networks, which

This RFC suggests a proposed protocol for the ARPA-Internet community, and requests discussion and suggestions for improvements. Distribution of this memo is unlimited. Overview We discuss the utility of "subnets " of Internet networks, which are logically visible sub-sections of a single

Abstract—Internet topology at the network layer consists of routers and subnets, i.e., point-to-point or multi-access connections. Network measurement studies have focused on router level maps and derived characteristics of routers such as mean degree, degree distribution, clustering coefficient

This RFC suggests a proposed protocol for the ARPA-Internet community, and requests discussion and suggestions for improvements. Distribution of this memo is unlimited.

community. It does not specify an Internet standard. Distribution of this memo is unlimited. Overview RFC-950 [2] specifies a procedure for subnetting Internet addresses using a bit-mask. While RFC-950 allows the "ones " in the subnet mask to be non-contiguous, RFC-950 recommends that 1

The Advanced Photon Source (APS) control system is based on a distributed topology of microprocessor–based Input/Output Controllers (IOCs). Since the cost effectiveness of placing an IOC near every point where an interface to the control system is required may be prohibitive, I/O subnets

This RFC discusses standardizing the protocol used in subnetted environments in the ARPA-Internet. Distribution of this memo is unlimited.

TheAdvancedPhotonSource(APS) control system is based on a distributed topology of microprocessor--based Input/Output Controllers (IOCs). Since the cost effectiveness of placing an IOC near every point where an interface to the control system is required may be prohibitive, I/O subnets implemented