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Appendix A
A.1 Glossary of Terms
SCALANCE W1750D CLI
Function Manual, 03/2019, C79000-G8976-C452-04
749
SDR
Server Derivation Rule. An SDR refers to a role assignment model used by
the controllers running ArubaOS to assign roles and VLANs to the WLAN
users based on the rules defined under a server group. The SDRs override
the default authentication roles and VLANs defined in the AAA and Virtual AP
profiles.
SDU
Service Data Unit. SDU is a unit of data that has been passed down from an
OSI layer to a lower layer and that has not yet been encapsulated into a PDU
by the lower layer.
SD-WAN
Software-Defined Wide Area Network. SD-WAN is an application for applying
SDN technology to WAN connections that connect enterprise networks
across disparate geographical locations.
SFP
The Small Form-factor Pluggable. SFP is a compact, hot-pluggable trans-
ceiver that is used for both telecommunication and data communications
applications.
SFP+
Small Form-factor Pl. SFP+ supports up to data rates up to 16
Gbps.
SFTP
Secure File Transfer Protocol. SFTP is a network protocol that allows file
access, file transfer, and file management functions over a secure connec-
tion.
SHA
Secure Hash Algorithm. SHA is a family of cryptographic hash functions. The
SHA algorithm includes the SHA, SHA-1, SHA-2 and SHA-3 variants.
SIM
Subscriber Identity Module. SIM is an integrated circuit that is intended to
securely store the International Mobile Subscriber Identity (IMSI) number and
its related key, which are used for identifying and authenticating subscribers
on mobile telephony devices.
SIP
Session Initiation Protocol. SIP is used for signaling and controlling multime-
dia communication session such as voice and video calls.
SIRT
Security Incident Response Team. SIRT is responsible for reviewing as well
as responding to computer security incident reports and activity.
SKU
Stock Keeping Unit. SKU refers to the product and service identification code
for the products in the inventory.
SLAAC
Stateless Address Autoconfiguration. SLAAC provides the ability to address
a host based on a network prefix that is advertised from a local network rout-
er through router advertisements.
SMB
Server Message Block or Small and Medium Business. Server Message
Block operates as an application- layer network protocol mainly used for
providing shared access to files, printers, serial ports, and for miscellaneous
communications between the nodes on a network.
SMS
Short Message Service. SMS refers to short text messages (up to 140 char-
acters) sent and received through mobile phones.
SMTP
Simple Mail Transfer Protocol. SMTP is an Internet standard protocol for
electronic mail transmission.
SNIR
Signal-to-Noise-Plus-Interference Ratio. SNIR refers to the power of a central
signal of interest divided by the sum of the interference power and the power
of the background noise. SINR is defined as the power of a certain signal of
interest divided by the sum of the interference power (from all the other inter-
fering signals) and the power of some background noise.