User guide

436 Glossary
iSCSI
iSCSI is a communication protocol used for sending
data between file servers and storage disks. The file
servers are called initiators and the disks are called
targets.
J
Jumbo Frames
Enables transporting the identical data in fewer
frames. Jumbo Frames reduce overhead,
lower processing time, and ensures fewer interrupts.
L
LAG
Link Aggregated Group. Aggregates ports or VLANs
into a single virtual port or VLAN.
For more information on LAGs, see Defining LAG
Membership
.
LAN
Local Area Networks. A network contained within a
single room, building, campus or other limited
geographical area.
Layer 2
Data Link Layer or MAC Layer. Contains the
physical address of a client or server station.
Layer 2 processing is faster than Layer 3 processing
because there is less information to process.Layer 4
Establishes a connections and ensures that all data
arrives to their destination. Packets inspected at the
Layer 4 level are analyzed and forwarding decisions
based on their applications.
LLDP-MED
Link Layer Discovery Protocol - Media Endpoint
Discovery. LLDP allows network managers to
troubleshoot and enhance network management by
discovering and maintaining network topologies
over multi-vendor environments. MED increases
network flexibility by allowing different IP systems
to co-exist on a single network LLDP.
Load Balancing
Enables the even distribution of data and/or
processing packets across available network
resources. For example, load balancing may
distribute the incoming packets evenly to all servers,
or redirect the packets to the next available server.
M
MAC Address
Media Access Control Address. The MAC Address is
a hardware specific address that identifies each
network node.
MAC Address Learning
MAC Address Learning characterizes a learning
bridge, in which the packet’s source MAC address is
recorded. Packets destined for that address are
forwarded only to the bridge interface on which that
address is located. Packets addressed to unknown
addresses are forwarded to every bridge interface.
MAC Address Learning minimizes traffic on the
attached LANs.
MAC Layer
A sub-layer of the Data Link Control (DTL) layer.