Sun-microsystems 1.0 Manual de usuario descargar pdf (Pagina 170)

144 SunFDDI/P1.0Adapter User’sGuide—May1997

RARP

(Reverse Address Resolution Protocol). A protocol used by diskless machines and

their servers within local networks such as Ethernet or FDDI. In a RARP

exchange, a diskless machine broadcasts its MAC address. A boot server

responds to that client with the client’s IP address, enabling the client to begin

the boot process.

RMT

(Ring Management). The portion of CMT that monitors the MAC. It provides a

trace mechanism to handle the stuck beaconing condition, and also detects

duplicate addresses on the ring.

RSAS

(redundant single-attach station). An FDDI station in which single-attach

interfaces are paired, with one active and the other a hot standby. In an RSAS

with connections to two different dual-attach concentrators, you enjoy the

network availability afforded by concentrators with single-attach connections,

plus, for the RSAS itself, the station availability of a dual-attach station.

SAP

(service access point). A logical interface between two adjacent protocol layers

(such as LLC and IP).

SAS

(single attachment station). An FDDI station that attaches to a single FDDI ring,

as distinguished from a dual-attached station, which attaches to both rings in a

dual ring.

SMT

(Station Management). The complete standard of PHY layer and frame-based

protocols to be supported by conforming FDDI stations.

THT

(Token-Holding Timer). A timer in the FDDI MAC protocol that controls the

length of time a station can hold a token for asynchronous transmission.

timing jitter

The deviation of clock recovery that can occur when the receiver attempts to

recover both clocking and data from the received signal. The PHY specification

describes a phase lock loop (PLL) and elasticity buffer to eliminate jitter.

1 2 ... 165 166 167 168 169 170 171 172 173 174 175 ... 181 182

Sin comentarios

Sun-microsystems 1.0 Manual de usuario Pagina 170