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Cisco uBR7100 Series and Cisco uBR7100E Series Universal Broadband Router Hardware Installation Guide
OL-5916-01
Chapter 1 Product Overview
Field-Replaceable Units
SDRAM Memory
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
SDRAM memory consists of three DIMMs (on the network processor card) that contain the packet and
system memory. By default, each chassis comes with 64 MB of fixed packet memory and 128 MB of
upgradable system memory. SDRAM system memory is upgradable to 256 MB; packet memory is fixed
at 64 MB.
For more information on the network processor, see the “Network Processor Card” section on page 1-15.
For information about replacing the SDRAM, see the “Upgrading the SDRAM Memory Modules”
section on page 6-11.
Note For information on how to replace the SDRAM memory, refer to the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/core/7206/fru/memory/index.htm
Table 1-3 lists the SDRAM product numbers for both packet memory and system memory. Where
applicable, product numbers are for spares (to replace existing memory configurations) and for upgrades
(to upgrade the existing memory configuration to a larger value).
Note The amount of memory installed in slot DIMM 1 must be greater than or equal to the amount of memory
installed in slot DIMM 2. If desired, slot DIMM 2 can be zero.
Slot DIMM 0 is used exclusively for packet memory and is fixed at 64 MB in the factory.
Table 1-3 SDRAM DIMM Configurations
Total SDRAM Memory Configuration Product Number
Packet Memory SDRAM
64 MB
1
1. Packet memory is fixed at 64 MB on the Cisco uBR7100 series routers.
1 64 MB DIMM in slot DIMM 0 MEM-7120/40-64P=
System Memory SDRAM
128 MB
2
2. This is the default memory configuration for all Cisco uBR7100 series routers.
1 128 MB DIMM in slot DIMM 1 MEM-7120/40-128S=
192 MB 1 128 MB DIMM in slot DIMM 1 and
1 64 MB DIMM in slot DIMM 2
MEM-7120/40-192S (when ordering the
original configuration)
MEM-7120/40-64S= (to upgrade the default
configuration)
256 MB 2 128 MB DIMMs; 1 in each slot
(DIMM 1 and DIMM 2)
MEM-7120/40-256S (when ordering the
original configuration)
MEM-7120/40-128S= (to upgrade the default
configuration)