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Cycle/Stuff Counter (C1)

The Cycle/Stuff Counter (C1) is a 1-byte field in a PLCP frame that controls bit

stuffing and length indication. The C1 byte occurs in the P0 (12th) cell of a PLCP

frame. The value of C1 and its corresponding Trailer length is:

C1 Frame Cycle Trailer Length (in nibbles)

11111111 1 13

00000000 2 14

01100110 3 (no stuff) 13

10011001 3 (stuff) 14

DACTLU

Deactivate Logical Unit

DACTPU

Deactivate Physical Unit

Data Link Layer

Level 2 of the seven level OSI reference model defined by ISO. This layer

provides the link access control and reliability to networks.

Default Gateway Address

The address of the gateway which is closest to the probe.

DRAM

Dynamic Random Access Memory, which is the main memory of a probe.

ELAN (Emulated Local Area Network)

A logical network defined and controlled by a LAN Emulation (LANE)

mechanism. See also LANE.

Encapsulation

The processing of wrapping data with a new protocol header for transmission over

the network.

Ethernet

A LAN developed by Xerox Corp., Digital Equipment Corp., and Intel Corp. It

uses the CSMA/CD method of access and transmits at 10 Mbit/s on a bus

topology. The IEEE 802.3 standard evolved from Ethernet, but they are not

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Agilent-technologies J3972A Manual de usuario Pagina 161