Cisco 12000 Series Replacement Instructions Manual page 5

Table 1
Total Route Memory
Ordered
64 MB
128 MB
256 MB
256 MB
512 MB
1. Do not mix memory sizes. If installing 2 DIMMs, both DIMMs must be the same size.
2. For GRPs equipped with 64 MB, this option adds a second 64-MB DIMM for a total of 128 MB.
3. This product is no longer available. Replace it with Cisco Product Number MEM-GRP-256.
4. Only compatible with Product Number GRP-B=.
5. GRP route memory configurations of 512 MB are only compatible with Product Number GRP-B=. Cisco IOS Release
If your system includes redundant GRPs, both GRPs should have the same memory size. Redundancy is
Note
not supported when using a GRP and a Performance Route Processor (PRP) in the same chassis. Refer
to the Route Processor Redundancy Plus for the Cisco 12000 Series Router publication for more
information.
PRP Route Memory
The processor on the PRP uses onboard SDRAM to perform several tasks for Cisco 12000 Series
Internet Routers, including the following:
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78-4338-16
Route Memory Configurations Available for Cisco 12000 Series Router GRP
1
Cisco Product Number
MEM-GRP/LC-64=
MEM-GRP/LC-128=
MEM-GRP/LC-256=
MEM-GRP-256=
MEM-GRP-512=
12.0(19)S or 12.0(19)ST or later and ROMMON Release 11.2 (181) or later are also required
Running the Cisco IOS software image
Storing and maintaining the network routing tables
Loading the Cisco IOS software image into installed line cards
Formatting and distributing updated routing tables to installed line cards
Monitoring temperature and voltage alarm conditions of installed cards and shutting them down
when necessary
Supporting a console port that enables you to configure the router using an attached terminal
Participating in network routing protocols (together with other routers in the networking
environment) to update the router's internal routing tables
GRP, PRP, and Line Card Memory Overview
DIMM Modules
2
1 64-MB DIMM
1 128-MB DIMM
3
2 128-MB DIMMs
4
1 256-MB DIMM
5
2 256-MB DIMMs
Cisco 12000 Series Router Memory Replacement Instructions
DRAM DIMM Sockets
U39 or U42
U39
U39 and U42
U39
U39 and U42
5