request for comment (RFC)
A document that describes the specifications of a technology. RFCs are used by the Internet
Engineering Task Force (IETF) and other standards bodies.
restoration domain
A part of the network where traffic restoration is provided in isolation from the rest of the
network.
RFC
See “request for comment” (p. GL-23) for definition.
RIP
See “routing information protocol” (p. GL-24) for definition.
RJ
See “random jitter” (p. GL-23) for definition.
RMON
See “remote network monitoring” (p. GL-23) for definition.
ROADM
See “reconfigurable optical add/drop multiplexer” (p. GL-23) for definition.
routing information protocol (RIP)
RIP is an interior gateway protocol defined by the IETF (RIPv1 - RFC 1058 and RIPv2 - 2453)
that specifies how routers exchange routing table information. RIP is a routing protocol based on
the distance vector algorithm. With RIP, routers periodically exchange entire tables.
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SSA
See “service affecting” (p. GL-25) for definition.
SAN
See “storage area network” (p. GL-27) for definition.
SC
See “shelf controller” (p. GL-25) for definition.
scattering
The change of direction of light rays or photons after striking small particles. It may also be
regarded as the diffusion of a light beam caused by the inhomogeneity of the transmitting
material.
SCOT
See “software control of transmission” (p. GL-26) for definition.
Glossary
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GL-24
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
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