KTI Networks KGS-1064-HP User Manual page 232

queue.
POP3
POP3 is an acronym for Post Office Protocol version 3. It is a protocol for email clients to
retrieve email messages from a mail server.
POP3 is designed to delete mail on the server as soon as the user has downloaded it. However,
some implementations allow users or an administrator to specify that mail be saved for some
period of time. POP can be thought of as a "store-and-forward" service.
An alternative protocol is Internet Message Access Protocol (IMAP). IMAP provides the user
with more capabilities for retaining e-mail on the server and for organizing it in folders on the
server. IMAP can be thought of as a remote file server.
POP and IMAP deal with the receiving of e-mail and are not to be confused with the Simple
Mail Transfer Protocol (SMTP). You send e-mail with SMTP, and a mail handler receives it on
your recipient's behalf. Then the mail is read using POP or IMAP. IMAP4 and POP3 are the
two most prevalent Internet standard protocols for e-mail retrieval. Virtually all modern e-mail
clients and servers support both.
PPPoE
PPPoE is an acronym for Point-to-Point Protocol over Ethernet.
It is a network protocol for encapsulating Point-to-Point Protocol (PPP) frames inside Ethernet
frames. It is used mainly with ADSL services where individual users connect to the ADSL
transceiver (modem) over Ethernet and in plain Metro Ethernet networks (Wikipedia).
Private VLAN
In a private VLAN, PVLANs provide layer 2 isolation between ports within the same
broadcast domain. Isolated ports configured as part of PVLAN cannot communicate with each
other. Member ports of a PVLAN can communicate with each other.
PTP
PTP is an acronym for Precision Time Protocol, a network protocol for synchronizing the
clocks of computer systems.
Q
QCE
QCE is an acronym for QoS Control Entry. It describes
QCE ID.
There are six QCE frame types:
Priority. Frames can be classified by one of 4 different QoS classes: "Low", "Normal",
"Medium", and "High" for individual application.
QCL
QCL is an acronym for QoS Control List. It is the list table of QCEs, containing QoS control
entries that classify to a specific QoS class on specific traffic objects.
Ethernet Type, VLAN,
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QoS class associated with a particular
UDP/TCP Port, DSCP, TOS, and Tag