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236 Agilent FrameScope 350 User’s Manual
9 Glossary
Glossary
Server A computer or service that is shared among stations on
the network. Any device in the network that provides services
upon request.
SMTP Simple Mail Transfer Protocol - The Internet electronic
mail protocol used to transfer mail between hosts.
SNMP Simple Network Management Protocol - A standard
protocol used to manage nodes on an IP network.
SNMP Agent Devices that are being managed in a network can
contain an SNMP agent. A network management program or
device sends a query to the agent. The agent retrieves the
requested value from a database stored in the managed device
and sends the reply. SNMP agents often retrieve and reply with
statistics about the managed device. Examples include
utilization values on ports, address tables that are stored, and
vendor profiles. The protocol used to communicate the
information is the Simple Network Management Protocol
(SNMP).
Station A computer on the network.
Statistics The measurement of key network parameters such
as utilization, frame and protocol traffic.
Subnet A portion of the network that shares a network address
with other subnets.
Subnet Mask A bit mask used to identify which bits in an IP
address apply to the subnet.
Time to live A field in an IP packet which indicates how long
the packet should be allowed to exist before being discarded.
Tra c erou te A Ping like tool that reports the number of hops to
the destination as well as the time delays to each hop along the
way. Traceroute is useful for locating bottlenecks in network
traffic.
Type of Service A field in an IP packet that controls the quality
of service that the packet requires. The internet is a “best effort”
network, using the Type of Service bits, higher grades of service
can be requested. If the network equipment supports better
service i.e. VoIP, the better service will be provided.
Unicast A frame sent to a specific single destination.