5-190 Cisco 7000 Hardware Installation and Maintenance
Installing and Configuring Processor Modules
Step 8 When all EPROMs have been replaced, follow the steps in the section Installing CxBus
Interface Processors earlier in this chapter to reinstall the RP. Be sure to use the ejector
levers to install the RP, then tighten the top and bottom captive installation screws.
Step 9 Reconnect any console or auxiliary port cables to the connectors on the RP.
Step 10 Turn on the system for an installation check, which is described in the section “Starting the
Router” in the chapter “Installing the Router.”
Note If you power up a system when one or more of the EPROMs is incorrectly inserted, the system
may print a message on the console port reporting a checksum error. If this happens, and if the
EPROM is not the PLCC-type, remove the microcode EPROM, straighten the pins, then reinsert the
EPROM and restart the system. If the EPROM is inserted backwards when power is turned on, the
EPROM is damaged and requires replacement.
Replacing RP SIMMs (Upgrading DRAM)
The system DRAM resides on four single inline memory modules (SIMMs) on the RP. The default
DRAM configuration is 16 MB (four 4 MB x 9 SIMMs). This section provides the steps for
increasing the amount of DRAM from 16 MB to 64 MB by replacing the four 4 MB SIMMs with
four 16 MB SIMMs. Some (earlier) RPs do not support 16 MB SIMMs; before upgrading, use the
prerequisites in the following section to ensure that your RP will support the larger SIMMs.
Compatibility Requirements
Before replacing SIMMs to increase the amount of DRAM available in your system, ensure that your
RP supports 16 MB SIMMs.
Only RPs that meet the following prerequisites support the larger (16 MB) SIMMs:
• If your system contains Software Release 9.17, the minimum requirements are:
— System Software Release 9.17(8) (or a later 9.17 image) in ROM
— System Bootstrap Version 4.6(7.3) (or a later 4.6 bootstrap version)
— RP board revision B0 or later
• If your system contains Software Release 9.21, the minimum requirements are:
— System Software Release 9.21(3) (or a later 9.21 image) in ROM
— System Bootstrap Version 4.7(2.1) (or a later 4.7 bootstrap version)
— RP board revision B0 or later
Bootstrap Version 4.6 is used exclusively with Software Release 9.17, and Bootstrap Version 4.7 is
used exclusively with Software Release 9.21. The revision numbers (indicated within parentheses)
for each version are revised independently of other bootstrap versions. Therefore, 4.6(7) can be a
later version than 4.7(2).
Software Release 9.17(8), RP board revision B0, and System Bootstrap Version 4.6(7.3) began
shipping as the default for Cisco 7000 series systems in March 1994. Software Release 9.21(3) and
System Bootstrap Version 4.7(2.1) are expected to be available in May 1994.
RPs that shipped from the factory with Release 9.17(7) or earlier in ROM do not support 16 MB
SIMMs. To verify that your RP supports the larger SIMMs, issue the following commands:
• Use the show version command to display the System Bootstrap Version.
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