Cisco 4000 Series Upgrade Manual

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 3
Safety Recommendations
• Erasable programmable read-only memory (EPROM)–based memory—In the Cisco 4500,
Cisco 4500-M, Cisco 4700, and Cisco 4700-M routers only the ROM monitor image is
EPROM-based. The ROM monitor permits you to boot the Cisco IOS image from Flash memory
if a boot helper image is not present in boot Flash memory.
Figure 2 Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory Systems and Software
Images
Table 1 lists the Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M processor and memory
specifications.
Table 1 Processor and Memory Specifications
Warning
Before working on a chassis or working near power supplies, unplug the power cord on
AC units; disconnect the power at the circuit breaker on DC units.
Caution To avoid damaging electrostatic discharge (ESD)–sensitive components, be sure you
have discharged all static electricity from your body before opening the chassis. Before performing
the procedures described in this document, review the following sections “Safety
Recommendations” and “Safety with Electricity.”
Safety Recommendations
Follow these guidelines to ensure general safety:
• Keep the chassis area clear and dust-free during and after installation.
• Put the removed chassis cover in a safe place. Keep tools away from walk areas where you or
others could fall over them.
1. The Orion microprocessor is based on the MIPS R4400 and is pin-compatible.
2. DRAM = dynamic random-access memory.
3. NVRAM = nonvolatile random-access memory.
4. ROM = read-only memory.
Description Cisco 4500 Cisco 4500-M Cisco 4700 Cisco 4700-M
Processor 100-MHz IDT Orion
RISC
1
100-MHz IDT Orion
RISC
133-MHz IDT Orion
RISC
133-MHz IDT Orion
RISC
Main memory (DRAM
2
) 8 or 32 MB 8, 16, or 32 MB 16 or 32 MB 16, 32, or 64 MB
Shared memory (DRAM) 4 or 16 MB 4, 8, or 16 MB 4, 8, or 16 MB 4, 8, or 16 MB
Flash memory 4, 8, 16, 32, or 64 MB 4, 8, 16, 32, or 64 MB 4, 8, 16, 32, or 64 MB 4, 8, 16, 32, or 64 MB
NVRAM
3
128 KB 128 KB 128 KB 128 KB
Boot ROM
4
128 to 512 KB 128 to 512 KB 128 to 512 KB 128 to 512 KB
Boot Flash 4, 8, or 16 MB 4 to 16 MB 4 to 16 MB 4 to16 MB
EPROM-based Flash memory based
ROM monitor
Boot helper
(xboot)
H6389
Cisco IOS

Cisco 4000 Series Specifications

General

Brand	Cisco
Model	4000 Series
Category	Network Router
Language	English