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Cisco 12000 Series

Cisco 12000 Series
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4
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Figure 1 shows the locations of the processor memory DRAM DIMM sockets and the Flash memory
SIMM socket on the GRP.
The two route memory DIMM sockets on the GRP, labeled U39 (route memory bank 1) and U42 (route
memory bank 2), respectively, enable you to configure route memory in desired increments ranging from
128 to 512 MB.
Note GRP route memory configurations of 512 MB are only compatible with Product Number
GRP-B=. Cisco IOS Release 12.0(19)S or 12.0(19)ST or later and ROMMON Release 11.2
(181) or later are also required.
Table 1 lists the available route memory configurations and associated product numbers for the GRP. The
default route memory configuration is 128 MB. If the GRP is currently equipped with one 64-MB DIMM
in socket U39, you can upgrade memory by installing a second 64-MB DIMM in socket U42, or by
removing the existing 64-MB DIMM and replacing it with one 128-MB DIMM.
Figure 1 Memory Locations on the Cisco 12000 Series Router GRP
Backplane connector
S
LO
T
-0
GIGABIT ROUTE PROCESSOR
S
LO
T
-1
C
O
LL
LIN
K
T
X
R
X
R
J-45
M
II
R
E
S
E
T
AUX
E
JE
C
T
H10547
Bank 2
DRAM DIMMs
Bank 1
PCMCIA slots
slot 0: bottom
slot 1: top
Console port
Ethernet
interface
(RJ-45 or MII)
Alphanumeric
LED displays
Auxiliary port
Flash
SIMM
U17
U42
U39

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