EMC DS-32B2, ED-12000B N, O

g-14 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_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.

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.