Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 2209)

Appendix B: Glossary
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C B.19
NTP
Network Time Protocol. NTP is a protocol for synchronizing the time clocks on a collection
of network devices using a distributed client/server mechanism.
For more information see Chapter 61, NTP Introduction and Configuration .
P
PAP
Password Authentication Protocol. PAP is an authentication protocol that uses a password
and is used by PPP to validate users before allowing them to access server resources. PAP
transmits plain text ASCII passwords over the network so it is not secure.
PDs
Powered Devices. PDs are devices such as IP phones, wireless LAN Access Points, and
network cameras. PDs receive power, in addition to data, over existing network
infrastructure and cabling. See
PoE .
Ping
Ping tests the connectivity between two network devices to determine whether each
network device can “see” the other device.
Ping-of-death attack
A type of attack on a computer that involves sending a malformed or otherwise malicious
ping to a network device.
Ping polling
Ping polling is used to ensure that a device is still present, live, and contactable in the
network by periodically sending a packet to an IP address and waiting for a response.
Configurable actions can be performed if responses are no longer arriving.
For more information see Chapter 78, Ping Polling Introduction and Configuration . For
how to configure ping polling see “Configuring Ping Polling” on page 78.4 .
PoE
Power over Ethernet. PoE is a mechanism for supplying power to network devices over the
same cabling used to carry network traffic. PoE supplies power to network devices called
Powered Devices (
PDs ).
For more information see Chapter 22, Power over Ethernet Introduction . For
configuration examples see “PoE and PoE+ Configuration” on page 22.12 .
Policing
In QoS , once you have set-up your Classification and created your Class maps , you can
start conditioning your traffic flows. One tool used for traffic conditioning is the policer (or
meter). The principle of policing is to measure the data flow that matches the definitions
for a particular class-map; then, by selecting appropriate data rates, allocate the flows into
one of three categories, Red Yellow or Green. You then decide what action to apply to the
Red, Yellow and Green data.
For more information see “Policing (Metering) Your Data” on page 38.17 .