Vigitron MaxiiNet Vi30126 Series, Руководство по эксплуатации

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O
OUI
OUI is the organizationally unique identifier. An OUI address is a globally unique
identifier assigned to a vendor by IEEE. You can determine which vendor a
device belongs to according to the OUI address which forms the first 24 bits of a
MAC address.
Option 82
Option 82 provides information about the DHCP client network location. The
DHCP server than uses this information to implement the IP address and other
client information. Option 82 supports RFC 3046 which is the DHCP Relay Agent
Information Option. Its use helps in protection the spoofing (forging) of IP and
MAC addresses.
P
PCP
PCP is an acronym for Priority Code Point. It is a 3-bit field storing the priority
level for the 802.1Q frame. It is also known as User Priority.
PD
PD is an acronym for Powered Device. In a PoE system, the power is delivered
from a PSE (power sourcing equipment) to a remote device. The remote device
is called a PD.
PHY
PHY is an abbreviation for Physical Interface Transceiver and is the device that
implements the Ethernet physical layer (IEEE-802.3).
PING
Ping is a program that sends a series of packets over a network or the Internet to
a specific computer in order to generate a response from that computer. The
other computer responds with an acknowledgment that it received the packets.
Ping was created to verify whether a specific computer on a network or the
Internet exists and is connected.
Ping uses Internet Control Message Protocol (ICMP) packets. The PING Request
is the packet from the origin computer, and the PING Reply is the packet
response from the target.
PoE
PoE is an acronym for Power over Ethernet. Power over Ethernet is used to
transmit electrical power to remote devices over standard Ethernet cable. It could
be used for powering IP telephones, wireless LAN access points and other
equipment, where it would be difficult or expensive to connect the equipment to
main power supply.