IBM 8275-416, User Manual

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GARP VLAN Registration Protocol (GVRP). The IEEE 802.1p protocol that enables workstations to request
admission to a specific VLAN rather than to a multicast domain.
Generic Attributes Registration Protocol (GARP). A protocol defined by IEEE 802.1p. There are two versions:
GARP Multicast Registration Protocol (GMRP) and GARP VLAN Registration Protocol (GVRP).
GARP Multicast Registration Protocol (GMRP). The IEEE 802.1p protocol that enables workstations to request
membership in a multicast domain. This joining action is called a leaf-initiated join. GMRP provides a standard protocol
for sending traffic to only those ports that have requested multicast traffic. It is compatible with 802.1Q because it
operates on a port basis.
GVRP. See GARP VLAN Registration Protocol.
HDLC. High-Level Data Link Control. OSI bit-orientated protocol.
Host. A device or computer on an IP network to which you can connect.
Jabber Packet. An Ethernet packet longer than 1518 octets (excludes frame bits but includes FCS octets) - not an
integral number of octets in length or has a bad FCS.
ICMP. Internet Control Message Protocol. Internet protocol that reports errors and provides other information relevant
to IP packet processing.
IEEE. Institute of Electrical and Electronics Engineers.
IETF. Internet Engineering Task Force, whose responsibilities include specification of protocols and recommendation
of Internet standards via the Request for Comment (RFC) process.
Long Packet. See oversize packet.
MIB. Management Information Base.
Multicast. Good packets directed to the multicast address. Does not include broadcast packets. Multicasts are
similar to broadcasts but have a more limited scope, for example they may be directed to all bridges on a ring.
Oversize Packet. An Ethernet packet longer than 1518 octets (including FCS octets) but otherwise well formed.
Network Layer. The third layer of the OSI reference model. This layer is responsible for controlling message traffic.
Octet. A digital unit of information comprising eight binary digits (bits) equivalent to a byte.
OSI. Open Systems Interconnection, a body of standards set by the International Standards Organization to define
the activities that must occur when computers communicate. In the OSI Reference Model there are seven layers, and
each contains a specific set of rules to follow at that point in the communication.
Packet. A unit of information that contains data, origin information; and destination information, which is switched as
a whole through a network.
PACMIB. Port Address Correlation MIB maps port to host data and gathers port statistics for 3Com CoreBuilder
devices on your network.
Probe. Station (or agent) responsible for gathering network data on a remote segment and passing it up to a central
management station (or client). Usually configured and controlled by the client.
PDN. Public Data Network.
Physical Layer. The first layer of the OSI network layer model. This layer manages the transfer of individual bits of
data over wires, or whatever medium, that is used to connect workstations and peripherals.
Presentation Layer. The sixth layer of the OSI network layer model. This layer controls the formatting and
translation of data.
Protocol. A set of rules and procedures that govern the exchange of data between two communicating systems.
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8275-416 User’s Guide