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Glossary
encapsulation
A method for moving messages across networks that use different
types of protocols. The message is encapsulated (rather than
translated), so it can move across a network that otherwise could
not understand its protocol. Encapsulating bridges and switches
generally use proprietary encapsulation schemes.
encode
To translate data into a series of electrical or optical pulses that can
travel efficiently over a cable or other medium.
entity
An active element within an Open Systems Interconnection (OSI)
network layer or sublayer.
extended LAN
A collection of LANs interconnected by protocol-independent
bridges or switches.
filtering rate
A measure (in packets per second) of the ELS10-26’s efficiency in
examining each frame, comparing it with an address table, and
then deciding whether to discard the frame or forward it.
forwarding rate
The rate (in packets per second) at which the ELS10-26 can receive
a stream of packets from one network segment, complete all
processing, and transmit the packets to another network segment.
frame
A data message that includes a source address, destination
address, data, frame check sequence (FCS), and control
information.
full wire speed
Refers to packet forwarding at the maximum rate at which data
can be transmitted on a given LAN.