Planet IGS-10020HPT-U User Manual page 395

Industrial 8-port 10/100/1000t 802.3at poe + 2-port 1g/2.5g sfp managed switch with usb console
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NFS
NFS is an acronym for Network File System. It allows hosts to mount partitions on a remote system and use them as
though they are local file systems.
NFS allows the system administrator to store resources in a central location on the network, providing authorized users
continuous access to them, which means NFS supports sharing of files, printers, and other resources as persistent
storage over a computer network.
NTP
NTP is an acronym for Network Time Protocol, a network protocol for synchronizing the clocks of computer systems.
NTP uses UDP (datagrams) as transport layer.
O
OAM
OAM is an acronym for Operation Administration and Maintenance. It is a protocol described in ITU-T Y.1731 used to
implement carrier Ethernet functionality. MEP functionality like CC and RDI is based on this.
Optional TLVs.
An LLDP frame contains multiple TLVs. For some TLVs it is configurable if the switch includes the TLV in the LLDP
frame. These TLVs are known as optional TLVs. If an optional TLV is disabled the corresponding information is not
included in the LLDP frame.
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 an MAC address.
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 implement the Ethernet physical layer
(IEEE-802.3).
User's Manual of IGS-10020HPT-U
395

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