Cisco 7513 Hardware Installation And Maintenance Manual page 101

Network Connections
Preparing
FDDI Connections
Physical
Fiber
network
ISO 9314
token-passing
more
or
An FDDI
most networks
backup
through
shows
Figure
SASs
connections
does not
DASs
ring
connects
transmitter for the other
transmits
7513 Hardware
2-36 Cisco
FDDI
Data
Distributed Interface
transmission
using
fiber-optic
the international version
rings primary
fiber-optic
connections
point-to-point
two more
ring consists of or
the primary
ring is
Class or single-attach
Class or dual-attach
concentrator
FDDI
configuration
typical
2-24
FDDI
Typical Configuration
attach
Class to
typically
SASs
The
for multiple
SASs
the ring
use
interrupt
have two
Class
physical
the
both the primary
station to
For example
the primary
to ring
and Maintenance
Installation
which
iOO-Mbps
specifies
media
defined the
by
is
ANSI An FDDI
of the standard
and
ring secondary
between
stations
adjacent
connections
point-to-point
used for data communication
SAS
attach one
stations to
DAS
stations
DASs SASs
and
with both
DAS
with
Concentrator
the primary
ring through concentrator
concentrator
ensures that
one and one
transmit
port
PHY
designated
ports
and Each
secondary rings
PHY
receives
traffic from
token-passing dual-ring
X3
ANSI
and by
standard
network two
comprises
An
FDDI
ring consists of
ring
between
stations
adjacent
and
the secondary used
is
ring
and
attached
ring are typically
attach both 2-24
to
rings Figure
SAS
and
which
provides
down
of
failure or power any
receive attach the single
to to
port
PHY
and which
each of
receiver for
one
is
port ring
ring and PHY
the primary
two
On
as
SAS
and