Planet IGS-10020, Руководство пользователя

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User’s Manual
405
SHA
SHA is an acronym for
S
ecure
H
ash
A
lgorithm. It designed by the National Security Agency (NSA) and published by
the NIST as a U.S. Federal Information Processing Standard. Hash algorithms compute a fixed-length digital
representation (known as a message digest) of an input data sequence (the message) of any length.
Shaper
A shaper can limit the bandwidth of transmitted frames. It is located after the ingress queues.
SMTP
SMTP is an acronym for
S
imple
M
ail
T
ransfer
P
rotocol. It is a text-based protocol that uses the Transmission Control
Protocol (TCP) and provides a mail service modeled on the FTP file transfer service. SMTP transfers mail messages
between systems and notifications regarding incoming mail.
SNAP
The Sub Network Access Protocol (SNAP) is a mechanism for multiplexing, on networks using IEEE 802.2 LLC, more
protocols than can be distinguished by the 8-bit 802.2 Service Access Point (SAP) fields. SNAP supports identifying
protocols by Ethernet type field values; it also supports vendor-private protocol identifier.
SNMP
SNMP is an acronym for
S
imple
N
etwork
M
anagement
P
rotocol. It is part of the Transmission Control Protocol/Internet
Protocol (TCP/IP) protocol for network management. SNMP allow diverse network objects to participate in a network
management architecture. It enables network management systems to learn network problems by receiving traps or
change notices from network devices implementing SNMP.
SNTP
SNTP is an acronym for
S
imple
N
etwork
T
ime
P
rotocol, a network protocol for synchronizing the clocks of computer
systems. SNTP uses UDP (datagrams) as transport layer.
SPROUT
S
tack
P
rotocol using
ROU
ting
T
echnology. An advanced protocol for almost instantaneous discovery of topology
changes within a stack as well as election of a master switch. SPROUT also calculates parameters for setting up each
switch to perform shortest path forwarding within the stack.
SSID
S
ervice
S
et
Id
entifier is a name used to identify the particular 802.11 wireless LANs to which a user wants to attach. A
client device will receive broadcast messages from all access points within range advertising their SSIDs, and can
choose one to connect to based on pre-configuration, or by displaying a list of SSIDs in range and asking the user to
select one (Wikipedia).
SSH
SSH is an acronym for
S
ecure
SH
ell. It is a network protocol that allows data to be exchanged using a secure channel
between two networked devices. The encryption used by SSH provides confidentiality and integrity of data over an
insecure network. The goal of SSH was to replace the earlier login, Telnet and rsh protocols, which did not provide