Filter
Top Products
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G-2
Glossary
Writer:
Chris Seiter
Project:
Glossary
Comments:
283237-001
File Name:
2824_G.DOC
Last Saved On:
6/27/97 5:15 PM
Boot Sectors The 2824 hub uses a 112KB sector of a Flash memory
device as the firmware boot sector. The boot sectors can be
modified by downloading the Flash. The update capability
of boot allows the upgrade of network download firmware.
BOOTP Bootstrap Protocol. A BOOTP server can be used to
provide the initial hub configuration parameters (for
example, the IP address, IP net mask, and IP default
gateway) and to assist in downloading the latest version of
Boot/Runtime or Runtime firmware. A hub BOOTP
request contains its MAC address.
Bucket RMON terminology for a discrete sample of data. The
RMON History group specifically uses buckets in its
sampling functions of the different data sources.
Class I In the context of 100Base-T, a Class I hub supports only
one hub hop with no direct uplinks to another hub
Class II In the context of 100Base-T, a Class II hub supports two
hub hops. However, the cable between the two hubs can
be only 5 meters long.
Collision A collision occurs when two or more nodes try to transmit
simultaneously. Large numbers of collisions may indicate
a high network load.
CRC Cyclic Redundancy Check. A complex mathematical
computation used to detect errors.
DUART Dual Universal Asynchronous Receiver Transmitter. A
DUART provides hardware support for two serial
communication ports.
Ethernet II Sometimes referred to as DIX, Ethernet II was defined by
Digital, Intel, and Xerox. The frame format for Ethernet II
differs from that of 802.3 in that the header specifies a
packet type instead of the packet length.