LevelOne GTL-2691 User Manual
Page 1618
G
LOSSARY
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OSPF
Open Shortest Path First is a link-state routing protocol that functions
better over a larger network such as the Internet, as opposed to distance-
vector routing protocols such as RIP. It includes features such as unlimited
hop count, authentication of routing updates, and Variable Length Subnet
Masks (VLSM).
O
UT
-
OF
-B
AND
M
ANAGEMENT
Management of the network from a station not attached to the network.
PIM
Protocol Independent Multicast Routing. PIM is a family of multicast routing
protocols for Internet Protocol (IPv4 and IPv6) networks that provide one-
to-many and many-to-many distribution of data over a local network or the
Internet. PIM does not include its own topology discovery mechanism, but
uses routing information supplied by other routing protocols such as the
RIP, OSPF and BGP.
P
ORT
A
UTHENTICATION
See IEEE 802.1X.
P
ORT
M
IRRORING
A method whereby data on a target port is mirrored to a monitor port for
troubleshooting with a logic analyzer or RMON probe. This allows data on
the target port to be studied unobstructively.
P
ORT
T
RUNK
Defines a network link aggregation and trunking method which specifies
how to create a single high-speed logical link that combines several lower-
speed physical links.
Q
IN
Q
QinQ tunneling is designed for service providers carrying traffic for multiple
customers across their networks. It is used to maintain customer-specific
VLAN and Layer 2 protocol configurations even when different customers
use the same internal VLAN IDs.
Q
O
S
Quality of Service. QoS refers to the capability of a network to provide
better service to selected traffic flows using features such as data
prioritization, queuing, congestion avoidance and traffic shaping. These
features effectively provide preferential treatment to specific flows either
by raising the priority of one flow or limiting the priority of another flow.
RADIUS
Remote Authentication Dial-in User Service. RA
DIUS
is a logon
authentication protocol that uses software running on a central server to
control access to RADIUS-compliant devices on the network.