Dell PowerConnect 5500 Series System User's Manual page 707

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Authentication Profiles
Sets of rules which that enables login to and authentication of users and
applications.
Auto-negotiation
Allows 10/100 Mpbs or 10/100/1000 Mbps Ethernet ports to establish for the
following features:
• Duplex/Half Duplex mode
• Flow Control
• Speed
B
Back Pressure
A mechanism used with Half Duplex mode that enables a port not to receive
a message.
Backplane
The main BUS that carries information in the switch module.
Backup Configuration Files
Contains a backup copy of the switch module configuration. The Backup file
changes when the Running Configuration file or the Startup Configuration
file is copied to the Backup file.
Bandwidth
Bandwidth specifies the amount of data that can be transmitted in a fixed
amount of time. For digital switch modules, bandwidth is defined in Bits per
Second (bps) or Bytes per Second.
Bandwidth Assignments
The amount of bandwidth assigned to a specific application, user, or
interface.
Baud
The number of signaling elements transmitted each second.
Best Effort
Traffic is assigned to the lowest priority queue, and packet delivery is not
guaranteed.
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Dell PowerConnect 55xx Systems User Guide
707