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EMC Connectrix DS-32B2 and ED-12000B Fabric OS Reference Manual
Glossary
Multicast The transmission of data from a single source to multiple specified
N_Ports (as opposed to all the ports on the network). See also
Broadcast and Unicast.
Multimode A fiber-optic cabling specification that allows up to 500 meters for
1 GB Fibre Channel and 300 meters for 2 GB Fibre Channel between
devices.
N
N_Port Node port. A port on a node that can connect to a Fibre Channel port
or to another N_Port in a point-to-point connection. See also NL_Port
and Nx_Port.
Name Server The term frequently used to indicate Simple Name Server. See also
SNS.
Node A Fibre Channel device that contains an N_Port or NL_Port.
Negotiate See Auto-Negotiate Speed and Autosense.
NL_Port Node loop port. A node port that has arbitrated loop capabilities.
Used to connect an equipment port to the fabric in a loop
configuration through an FL_Port. See also N_Port and Nx_Port.
Nonparticipating
Mode
A mode in which an L_Port in a loop is inactive and cannot arbitrate
or send frames, but can retransmit any received transmissions. This
mode is entered if there are more than 127 devices in a loop and an
AL_PA cannot be acquired. See also L_Port and Participating Mode.
Nx_Port A node port that can operate as either an N_Port or NL_Port.
O
Ordered Set A transmission word that uses 8b/10b mapping and begins with the
K28.5 character. Ordered sets occur outside of frames, and include the
following items:
• Frame delimiters mark frame boundaries and describe frame
contents.
• Primitive signals indicate events.
• Primitive sequences indicate or initiate port states.
Ordered sets are used to differentiate Fibre Channel control
information from data frames and to manage the transport of frames.