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O
OID
Object Identifier.
Used by SNMP to identify managed objects. In the SNMP Manager/ Agent network
management paradigm, each managed object must have an OID to identify it.
P
Packets
Blocks of information for transmission in packet switched systems.
PDU
Protocol Data Unit.
A data unit specified in a layer protocol consisting of protocol control information and layer
user data.
PING
Packet Internet Groper.
Verifies if a specific IP address is available. A packet is sent to another IP address and waits
for a reply.
Port
Physical ports provide connecting components that allow microprocessors to communicate with peripheral
equipment.
Port Mirroring
Monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from one port to
a monitoring port.
For more information on port mirroring, see
Defining Port Mirroring Sessions
.
Port Speed
Indicates port speed of the port. Port speeds include:
• Ethernet 10 Mbps
• Fast Ethernet 100Mbps
• Gigabit Ethernet 1000 Mbps
Protocol
A set of rules that governs how devices exchange information across networks.
Q
QoS
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