720 Dell PowerConnect 55xx Systems User Guide
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Contax\CxUGGlossary.fm
DELL CONFIDENTIAL â PRELIMINARY 9/11/12 - FOR PROOF ONLY
Sub-network. Subnets are portions of a network that share a common address
component. On TCP/IP networks, devices that share a prefix are part of the
same subnet. For example, all devices with a prefix of 157.100.100.100 are
part of the same subnet.
Subnet Mask
Used to mask all or part of an IP address used in a subnet address.
Switch
Filters and forwards packets between LAN segments. Switches support any
packet protocol type.
T
TCP/IP
Transmissions Control Protocol
. Enables two hosts to communicate and
exchange data streams. TCP guarantees packet delivery, and guarantees
packets are transmitted and received in the order their sent.
Telnet
Terminal Emulation Protocol.
Enables system users to log in and use
resources on remote networks.
TFTP
Trivial File Transfer Protocol
. Uses User Data Protocol (UDP) without
security features to transfer files.
Trap
A message sent by the SNMP that indicates that system event has occurred.
Trunking
Link Aggregation.
Optimizes port usage by linking a group of ports together
to form a single trunk (aggregated groups).
U
UDP
User Data Protocol.
Transmits packets but does not guarantee their delivery.
Unicast
A form of routing that transmits one packet to one user.
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