Cisco 3000 Series - Page 58

Replacing
DRAM SIMMs
Note The
factory-set
default
jumper setting
for
jumper
locations
W3 W2
W4 on the model 3202
is for the two left
pins
on
all
jumpers
to
be
jumpered together
as shown in
Figure
5-7 If
you
do not
want
your system
to be writable from the
net
disable the
write to Flash
memory
option by moving
the
jumper
on
W3 to the
right
two
jumpers
Note Note that the
jumper ordering
for the model 3202
first
W3
then
W2
then
W4
is
not
intuitive
Figure
5-8 shows the correct
jumper setting
for
jumper
location Wi
on
the model 3202 when the
system
card is oriented
as
in
Figure
5-7 There should be
no
nonnal conditions under
which
the
jumper setting
on Wi should be
changed
Wi
Flash mode
Figure
5-8 Model 3202
Jumper
Location Wi Default
Setting
For
information
on
configuring
your
systems
Flash
memory
refer to the Router Products
Configuration
and
Reference publication
Repacng
DRAM SIIMMs
The router contains
primary
main
memory
and
secondary shared memory
Both
primary
and
secondary memory
size
in
kilobytes KB
are
shown in the
system
banner
on
the console
screen
Primary memory
is
implemented
with
dynamic
random-access
memory DRAM single
in-line
memory
modules
SIMMs
Secondary memory
used for
packet buffering
consists of fixed
512 KB
megabytes
for models 3104 and
3204
After
booting up your system
will indicate in the
system
banner the
amount
of
memory
it has The
following example
shows
system
with
4096 KB
MB
of
primary
memory
System Bootstrap Version 4.60.15 SOFTWARE
Copyright
19861992
by cisco
Systems
Cisco
3000/030
processor
with 4096
Kbytes
of
memory
Primary memory
may
need
to
be
expanded
when
you
use
very
large routing
tables
or
many
protocols
This
might
be
necessary
with
configurations
in which the router
is
set
up
as
connection
device between
large
external
networks and
your
internal network
Tools and
Equipment Required
for DRAM SIMM
Replacement
ESD cord and wrist
strap
Screwdriver No
Phillips
DRAM SIMMs for
your
router model
Maintenance
5-11