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GLOSSERY
ARP (Address Resolution Protocol): Converts an Internet Protocol (IP)
address to its corresponding physical network address.
Broadcast: The transmission of packets to all hosts in the network.
Broadcast Storm: An infi nite loop of ARP requests, usually associated with a
physical wiring loop.
MAC address (Media Access Control address): A unique identifi er assigned
to network interfaces for communications on the physical network segment.
Multicast: Transmission of packets to a host group within the network.
QoS (Quality of Service): A suite of protocols and hardware management
that prioritizes data packets. Very useful in latency sensitive applications, i.e.
VoIP, Control Systems, Video, Streaming
RSTP (Rapid Spanning Tree Protocol): A protocol that helps to reduce
broadcast storms by managing multiple connections to the same destination.
SNMP: (Simple Network Management Protocol): is an “Internet-standard
protocol for managing devices on IP networks.
IGMP Snooping: Used to implement dynamic registration of L2 multicast
on the switch.
TCP/IP: Named from two of the most important protocols in it: the
Transmission Control Protocol (TCP) and the Internet Protocol (IP), which are
the fi rst two networking protocols defi ned in this standard.
Unicast: Transmission of packets to a specifi c host in the network.
Unknown Unicast (fl ood): The transmission of unicast packets with an
unknown destination MAC address (this does not occur under normal
network operation).
VLAN (Virtual Local Area Network): used to establish secure autonomous
broadcast/multicast domains.
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