HP StorageWorks B-Series Multi-protocol Router Blade Installation Guide (A7990-90002, June 2006)

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single mode The fiber optic cabling standard that corresponds to distances of up to 10 km
between devices.
SNMP Simple Network Management Protocol. An internet management protocol that uses
either IP for network-level functions and UDP for transport-level functions, or TCP/IP
for both. Can be made available over other protocols, such as UDP/IP, because it
does not rely on the underlying communication protocols.
SNS Simple Name Server. A switch service that stores names, addresses, and attributes
for up to 15 minutes, and provides them as required to other devices in the fabric.
SNS is defined by Fibre Channel standards and exists at a well-known address.
May also be referred to as directory service.
switch Hardware that routes frames according to Fibre Channel protocol and is controlled
by software.
switch port A port on a switch. Switch ports can be E_Ports, F_Ports, or FL_Ports.
SWL Short wavelength. A type of fiber optic cabling that is based on 850mm lasers and
supports link speeds up to 2 Gbit/sec. May also refer to the type of transceiver.
tenancy The time from when a port wins arbitration in a loop until the same port returns to
the monitoring state. Also referred to as loop tenancy.
throughput The rate of data flow achieved within a cable, link, or system. Usually measured in
bps (bits per second).
topology As applies to Fibre Channel, the configuration of the Fibre Channel network and the
resulting communication paths allowed. There are three possible topologies:
Point-to-point: A direct link between two communication ports.
Switched fabric: Multiple N_Ports linked to a switch by F_Ports.
Arbitrated loop: Multiple NL_Ports connected in a loop
transmission
character
A 10-bit character encoded according to the rules of the 8b/10b algorithm.
transmission word A group of four transmission characters.
trap (SNMP) The message sent by an SNMP agent to inform the SNMP management station of a
critical error.
U_Port Universal port. A switch port that can operate as a G_Port, E_Port, F_Port, or
FL_Port. A port is defined as a U_Port when it is not connected or has not yet
assumed a specific function in the fabric.
well-known
address
As pertaining to Fibre Channel, a logical address defined by the Fibre Channel
standards as assigned to a specific function, and stored on the switch.
workstation A computer used to access and manage the fabric. May also be referred to as a
management station or host.
WWN World Wide Name. An identifier that is unique worldwide. Each entity in a fabric
has a separate WWN.