Functional
Overview
Priority
Control
Either
high
priority
or
low
priority
can
be
established
for
cell
loss
and
cell
delay
on
per channel
basis
For
cell
delay
control
is
performed
per
the
predetermined
priority
at
connection For c1l
loss
control
is
performed
per the
value
of the Cell
Loss
Priority
CLP
bit
in
the
cell
header
The
system
handles
cell
for
which
the
CLP
bit in
the header
is set to
microseconds
as
high
priority
regardless
of the
priority
setting
In
the
switch
cell
delay
of
20
microseconds
to
milliseconds
occurs
depending
on
the degree
of
congestion
and
degree
of
priority
of the passing
cells
Priority
on
the delay can be
set
according
to
cell
type
Guaranteed
cell high
priority
Best
effort
cell
low
priority
In the
HyperSwitch
Al00
two
lines
share
one
input
buffer
2048
cells The
size
allocated
to
guaranteed
cells
and
best
effort
cells
and
the threshold
for discarding
these
cells
can
be
set
in
128-cell
increments
for
this
input
buffer
This
setting
applies
to
the
entire
HyperSwitch
Al00
different
parameter
cannot
be
set
for each
input
buffer
Connection
Control
The
HyperSwitch
Al00
supports
maximum
of
4096
virtual
path
connections/virtual
channel
connections
per input
line
for point-to-point connection
or
one
direction of multicast
connection
The number
of
bits
of
VPI
and
the
number
of
bits
of
VCI
are configured
per
line
The
number
of
VPIs
defined
can
be
less
than
or
equal
to
2x
The
lowest
bits
of
the
VCI
field
are
supported
where
xy
is
12
or less
All the
VCI
bits
except
the lowest
bits
are
set
to
zero
Software
restricts
the
total
numbers
of paths
for point-to-point connection
and
point-to-multipoint
connection
Setting
Fixed
Paths
Use
the console
terminal
to
make
additions
and
deletions
of
PVC
entries
and
PVC
connection
information
saved
in
Flash
memory Upon
system
reset
control
CTLinitializes
the header
translator
table
in
each
LINF
and
the multicast
bitmap
table
in the
XATOMSW
according
to
the
PVC
information
saved
in
Flash
memory
Setting
Switched
Path
The
system
supports
SVCs
only
for point-to-point
connection The
use
of
network
address-line
corresponding
table
set
from
the console
terminal
implements
this
function
NMS
Interface
Using
SNMP
over
UDP/IP/AAL5
the
HyperSwitch
A100
communicates
with
the
NMS
manager
via
an
ATM
line This
function
is
implemented
with
the
use
of
MIB-Il
defined
in
RFC
1213
console
terminal
connection
is
needed
to
set
the
system
configuration
Note
Appendix
Functions
of the
Expandable
ATM
Output
Buffer
Modular
Switch
describes
further
details
of the
expandable
ATM
output
buffer
modular
switch
XATOMSW
1-12
Cisco HyperSwitch
A100
User Guide
