Dell PowerConnect 5448 User's Guide - Page 433
Configuration Data Base., Class of Service CoS., Command Line Interface, Central Processing Unit
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C CDB Configuration Data Base. A file containing a device's configuration information. Class of Service Class of Service (CoS). Class of Service is the 802.1p priority scheme. CoS provides a method for tagging packets with priority information. A CoS value between 0-7 is added to the Layer II header of packets, where zero is the lowest priority and seven is the highest. A overlapping transmission of two or more packets that collide. The data transmitted cannot be used, and the session is restarted. Combo Ports A single logical port with two physical connections, including an RJ-45 connection and an SFP connection. CLI Command Line Interface. A set of line commands used to configure the system. For more information on using the CLI, see Using the CLI. Communities Specifies a group of users which retains the same system access rights. CPU Central Processing Unit. The part of a computer that processes information. CPUs are composed of a control unit and an ALU. D DHCP Client An Internet host using DHCP to obtain configuration parameters, such as a network address. DSCP DiffServe Code Point (DSCP). DSCP provides a method of tagging IP packets with QoS priority information. Domain A group of computers and devices on a network that are grouped with common rules and procedures. Duplex Mode Permits simultaneous transmissions and reception of data. There are two different types of duplex mode: • Full Duplex Mode - Permits for bisynchronous communication, for example, a telephone. Two parties can transmit information at the same time. • Half Duplex Mode - Permits asynchronous communication, for example, a walkie-talkie. Only one party can transmit information at a time. Dynamic VLAN Assignment (DVA) Allows automatic assignment of users to VLANs during the RADIUS server authentication. When a user is authenticated by the RADIUS server, the user is automatically joined to the VLAN configured on the RADIUS server. Glossary 433