Appendix A
A.1 Glossary of Terms
SCALANCE W1750D CLI
744 Function Manual, 03/2019, C79000-G8976-C452-04
Orthogonal Frequency Division Multiplexing. OFDM is a scheme for encoding
digital data on multiple carrier frequencies.
Object Identifier. An OID is an identifier used to
name an object. The OIDs
represent nodes or managed objects in a MIB hierarchy. The OIDs are des-
ignated by text strings and integer sequences and are formally defined as per
the ASN.1 standard.
Opportunistic Key Caching. OKC is a technique available
for authentication
between multiple APs in a network where those APs are under common ad-
ministrative control. Using OKC, a station roaming to any AP in the network
will not have to complete a full authentication exchange, but will instead just
perform the 4-way handshake to establish transient encryption keys.
The process of preparing a device for use on an enterprise network, by creat-
ing the appropriate access credentials and setting up the network connection
parameters.
n open communications interface between control plane and
the forwarding layers of a network.
OpenFlow agent. OpenFlow is a software module in Software
-Defined Net-
working (SDN) that allows the abstraction of any legacy network element, so
that it can be integrated and managed by the SDN controller. OpenFlow runs
on network devices such as switches, routers, wireless controllers, and APs.
Optical wireless is combined use of conventional radio frequency wireless
and
optical fiber for telecommunication. Long-range links are provided by
using optical fibers; the links from the long
-range endpoints to end users are
accomplished by RF wireless or laser systems. RF wireless at Ultra High
Frequencies and microwave frequenci
es can carry broadband signals to
individual computers at substantial data speeds.
Open Systems Interconnection. OSI is a reference model that defines a
framework for communication between the applications in a network.
Open Shortest Path First.
OSPF is a link-state routing protocol for IP net-
-state routing algorithm and falls into the group of interior
routing protocols that operates within a single Autonomous System (AS).
Open Shortest Path First version 2. OSPFv2 i
s the version 2 of the link-state
routing protocol, OSPF. See RFC 2328.
Organizationally Unique Identifier. Synonymous with company ID or vendor
ID, an OUI is a 24
-bit, globally unique assigned number, referenced by vari-
ous standards. The first half of a MAC address is OUI.
Open Virtualization Archive. OVA contains a compressed installable version
of a virtual machine.
Open Virtualization Format. OVF is a specification that describes an open
-
standard, secure, efficient, portable and
extensible format for packaging and
distributing software for virtual machines.
Protected Access Credential. PAC is distributed to clients for optimized net-
work authentication. These credentials are used for establishing an
authenti-
cation tunnel between the client and the authentication server.
Password Authentication Protocol. PAP validates users by password. PAP
does not encrypt passwords for transmission and is thus considered inse-
cure.
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