Installation guide

Upgrading Memory in Cisco 4000 Series Routers 7
Tools Required
Cisco 4500-M
The Cisco 4500-M router contains the following memory systems:
• Two SIMM sockets for main memory. Both must be filled, and they must contain equal memory
sizes (4 and 4 MB, 8 and 8 MB, or 16 and 16 MB).
• One SIMM socket for shared memory (4 or 16 MB).
• Two SIMM sockets for system Flash memory, plus one for boot helper Flash memory. One or
both system Flash-memory sockets may be filled. When both are filled, equal memory sizes are
required (4 MB, 8 MB, 4 and 4 MB, or 8 and 8 MB).
Cisco 4700
The Cisco 4700 router contains the following memory systems:
• Two SIMM sockets for main memory. Both must be filled, and they must contain equal memory
sizes (4 and 4 MB, or 16 and 16 MB).
• One SIMM socket for shared memory (4, 8, or 16 MB).
• Two SIMM sockets for system Flash memory, plus one for boot helper Flash memory. One or
both system Flash-memory sockets may be filled. When both are filled, equal memory sizes are
required (4 MB, 8 MB, 4 and 4 MB, or 8 and 8 MB).
Cisco 4700-M
The Cisco 4700-M router contains the following memory systems:
• Two SIMM sockets for main memory. Both must be filled, and they must contain equal memory
sizes (4 and 4 MB, 16 and 16 MB, or 32 and 32 MB).
• One SIMM socket for shared memory (4, 8, or 16 MB).
• Two SIMM sockets for system Flash memory, plus one for boot helper Flash memory. One or
both system Flash-memory sockets may be filled. When both are filled, equal memory sizes are
required (4 MB, 8 MB, 4 and 4 MB, or 8 and 8 MB).
Tools Required
You need the following tools to remove and upgrade main, shared, Flash, and ROM memory:
• ESD-preventive wrist strap
• Antistatic bag (for removed components)
• ESD mat (for removed network processor modules)
• Number 1 Phillips screwdriver (to loosen the chassis release screw)
• Number 2 Phillips screwdriver (to remove network processor modules)
To upgrade ROM or to add Flash EPROM to a Cisco 4000 router Flash EPROM card, you also need:
• An IC extraction tool or small flat-blade screwdriver
• Needlenose pliers (to straighten bent pins)