Technical data

Glossary-28 Brocade SilkWorm 4100 Hardware Reference Manual
Publication Number: 53-0000563-02
SMI Structure of management information. A notation for setting or retrieving SNMP management
variables.
SMI-S Storage Management Initiative Specification. Defines the interface that allows storage management
systems to manage and monitor storage area network (SAN) resources.
SNA/SDLC Systems Network Architecture/Synchronous Data Link Control. A structure for transferring data among
a variety of computing platforms.
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. See also community (SNMP).
SNS Simple Name Server.
SOF Start of frame. A group of ordered sets that marks the beginning of a frame and indicates the class of
service the frame will use.
soft zone A zone consisting of zone members that are made visible to each other through client service requests.
Typically, soft zones contain zone members that are visible to devices using Name Server exposure of
zone members. The fabric does not enforce a soft zone. Note that well-known addresses are implicitly
included in every zone.
SoIP SCSI-over-IP.
SONET Synchronous optical network. A standard for optical networks that provides building blocks and
flexible payload mappings.
special
character
A 10-bit character that does not have a corresponding 8-bit value but is still considered valid. The
special character is used to indicate that a particular transmission word is an ordered set. This is the only
type of character to have five 1s or 0s in a row.
SPLD Simple PLD. Usually, either a PLA or PAL.
SPOF Single point of failure. Any component in a SAN whose malfunction could bring down the entire SAN.
SQ_ID Sequence ID. Used to identify and track all of the frames within a sequence between a source (S_ID)
and destination (D_ID) port pair.
SRM Storage resource management. The management of disk volumes and file resources.
SSH Secure shell. Used starting in Brocade Fabric OS v4.1 to support encrypted telnet sessions to the switch.
SSH encrypts all messages, including the client sending the password at login.
SSL Secure sockets layer.
Standard
Translative
Mode
Allows public devices to communicate with private devices that are directly connected to the fabric.
stealth mode A method used in some switches to simulate Brocade switches using QuickLoop.