Cisco 7000 Series Hardware Installation And Maintenance page 97

Network Connections
Preparing
Figure
Ring wrap
second
would
example
because
segmentation
Note
The
stream
its upstream
Figure
station
station
7000 Hardware
2-32 Cisco
DAS
2-22 Station Failure
could the ring
failure cause
two
the ring
into
segment
separate
Station 2-22
if in Figure
communication
no for
path
Each
station in ring refers
based on
the signal flow
is
neighbor and
transmits
shows
2-22 the primary signal flow
PHY
and from
on station
the
is upstream
neighbor
and
Maintenance
Installation
and
Ring Recovery Example
Failed
Station
in both directions
to
wrap
could not
that
rings
Station fails Stations
fails after
them
between
Subsequent
exists
as upstream
to neighbor stations
its
the primary
on station
ring
downstream
the primary
to
its
signal
from
transmitted
being
PHY
to on station
and
of the
station station is
Station
station
which
from
the point of failure
other
communicate
with each
and be
each
will
additional
failures cause
downstream
or
neighbors
receives the primary
signal
neighbor For example
PHY Aon
PHY
on
station to
Using station
reference
as
downstream
of
neighbor
wrap
For
isolated
from
station